Add DragAndDropAcrossApps sample.
This sample shows drag and drop operations across applications,
including new flags and methods available in Android N.
Change-Id: Ieffbe5651592c22417d773e9f05fe88a2b15d3c6
diff --git a/build.gradle b/build.gradle
index 6b1369a..7d50c91 100644
--- a/build.gradle
+++ b/build.gradle
@@ -116,6 +116,7 @@
"security/AsymmetricFingerprintDialog",
"wearable/wear/WearSpeakerSample",
"wearable/wear/WearDrawers",
+"ui/window/DragAndDropAcrossApps",
]
List<String> taskNames = [
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/.gitignore b/ui/window/DragAndDropAcrossApps/DragSource/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/build.gradle b/ui/window/DragAndDropAcrossApps/DragSource/build.gradle
new file mode 100644
index 0000000..91586b3
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/build.gradle
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+buildscript {
+ repositories {
+ jcenter()
+ }
+
+ dependencies {
+ classpath 'com.android.tools.build:gradle:2.1.2'
+ }
+}
+
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 24
+ buildToolsVersion "23.0.2"
+
+ defaultConfig {
+ applicationId "com.example.android.dragsource"
+ minSdkVersion 24
+ targetSdkVersion 24
+ versionCode 1
+ versionName "1.0"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+}
+
+dependencies {
+ compile fileTree(dir: 'libs', include: ['*.jar'])
+ compile 'com.android.support:appcompat-v7:24.1.1'
+ compile 'com.android.support:support-v13:24.1.1'
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/proguard-rules.pro b/ui/window/DragAndDropAcrossApps/DragSource/proguard-rules.pro
new file mode 100644
index 0000000..fc7fcea
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/proguard-rules.pro
@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /usr/local/google/home/rkc/Android/Sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/AndroidManifest.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..453cd6c
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/AndroidManifest.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2015 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest package="com.example.android.dragsource"
+ xmlns:android="http://schemas.android.com/apk/res/android">
+
+ <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+ <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+
+ <application
+ android:icon="@mipmap/ic_launcher"
+ android:label="DragSource Sample">
+ <activity android:name="com.example.android.dragsource.MainActivity">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+
+ <!--
+ A content provider that serves selected files. Images are copied and added to this provider
+ in DragSourceFragment where they are displayed and made available for drag and drop. -->
+ <provider
+ android:name="android.support.v4.content.FileProvider"
+ android:authorities="com.example.android.dragsource.fileprovider"
+ android:exported="false"
+ android:grantUriPermissions="true">
+ <meta-data
+ android:name="android.support.FILE_PROVIDER_PATHS"
+ android:resource="@xml/file_paths" />
+ </provider>
+
+ </application>
+</manifest>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..db8962e
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+ public static final String TAG = "SampleActivityBase";
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ }
+
+ @Override
+ protected void onStart() {
+ super.onStart();
+ initializeLogging();
+ }
+
+ /** Set up targets to receive log data */
+ public void initializeLogging() {
+ // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+ // Wraps Android's native log framework
+ LogWrapper logWrapper = new LogWrapper();
+ Log.setLogNode(logWrapper);
+
+ Log.i(TAG, "Ready");
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/Log.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..56dc2a9
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,244 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+
+ // Grabbing the native values from Android's native logging facilities,
+ // to make for easy migration and interop.
+ public static final int NONE = -1;
+
+ public static final int VERBOSE = android.util.Log.VERBOSE;
+
+ public static final int DEBUG = android.util.Log.DEBUG;
+
+ public static final int INFO = android.util.Log.INFO;
+
+ public static final int WARN = android.util.Log.WARN;
+
+ public static final int ERROR = android.util.Log.ERROR;
+
+ public static final int ASSERT = android.util.Log.ASSERT;
+
+ // Stores the beginning of the LogNode topology.
+ private static LogNode mLogNode;
+
+ /**
+ * Returns the next LogNode in the linked list.
+ */
+ public static LogNode getLogNode() {
+ return mLogNode;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to.
+ */
+ public static void setLogNode(LogNode node) {
+ mLogNode = node;
+ }
+
+ /**
+ * Instructs the LogNode to print the log data provided. Other LogNodes can
+ * be chained to the end of the LogNode as desired.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging
+ * facilities
+ * to extract and print useful information.
+ */
+ public static void println(int priority, String tag, String msg, Throwable tr) {
+ if (mLogNode != null) {
+ mLogNode.println(priority, tag, msg, tr);
+ }
+ }
+
+ /**
+ * Instructs the LogNode to print the log data provided. Other LogNodes can
+ * be chained to the end of the LogNode as desired.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ */
+ public static void println(int priority, String tag, String msg) {
+ println(priority, tag, msg, null);
+ }
+
+ /**
+ * Prints a message at VERBOSE priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void v(String tag, String msg, Throwable tr) {
+ println(VERBOSE, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at VERBOSE priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void v(String tag, String msg) {
+ v(tag, msg, null);
+ }
+
+
+ /**
+ * Prints a message at DEBUG priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void d(String tag, String msg, Throwable tr) {
+ println(DEBUG, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at DEBUG priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void d(String tag, String msg) {
+ d(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at INFO priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void i(String tag, String msg, Throwable tr) {
+ println(INFO, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at INFO priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void i(String tag, String msg) {
+ i(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void w(String tag, String msg, Throwable tr) {
+ println(WARN, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void w(String tag, String msg) {
+ w(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void w(String tag, Throwable tr) {
+ w(tag, null, tr);
+ }
+
+ /**
+ * Prints a message at ERROR priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void e(String tag, String msg, Throwable tr) {
+ println(ERROR, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at ERROR priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void e(String tag, String msg) {
+ e(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void wtf(String tag, String msg, Throwable tr) {
+ println(ASSERT, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void wtf(String tag, String msg) {
+ wtf(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void wtf(String tag, Throwable tr) {
+ wtf(tag, null, tr);
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogFragment.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..2b92506
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,98 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fragment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+ private LogView mLogView;
+
+ private ScrollView mScrollView;
+
+ public LogFragment() {
+ }
+
+ public View inflateViews() {
+ mScrollView = new ScrollView(getActivity());
+ ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+ ViewGroup.LayoutParams.MATCH_PARENT,
+ ViewGroup.LayoutParams.MATCH_PARENT);
+ mScrollView.setLayoutParams(scrollParams);
+
+ mLogView = new LogView(getActivity());
+ ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+ logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+ mLogView.setLayoutParams(logParams);
+ mLogView.setClickable(true);
+ mLogView.setFocusable(true);
+ mLogView.setTypeface(Typeface.MONOSPACE);
+
+ // Want to set padding as 16 dips, setPadding takes pixels. Hooray math!
+ int paddingDips = 16;
+ double scale = getResources().getDisplayMetrics().density;
+ int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+ mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+ mLogView.setCompoundDrawablePadding(paddingPixels);
+
+ mLogView.setGravity(Gravity.BOTTOM);
+ mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+ mScrollView.addView(mLogView);
+ return mScrollView;
+ }
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+
+ View result = inflateViews();
+
+ mLogView.addTextChangedListener(new TextWatcher() {
+ @Override
+ public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+ }
+
+ @Override
+ public void onTextChanged(CharSequence s, int start, int before, int count) {
+ }
+
+ @Override
+ public void afterTextChanged(Editable s) {
+ mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+ }
+ });
+ return result;
+ }
+
+ public LogView getLogView() {
+ return mLogView;
+ }
+}
\ No newline at end of file
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogNode.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..0c922e0
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+ /**
+ * Instructs first LogNode in the list to print the log data provided.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging
+ * facilities
+ * to extract and print useful information.
+ */
+ public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogView.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..f752f33
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.AttributeSet;
+import android.widget.TextView;
+
+/**
+ * Simple TextView which is used to output log data received through the LogNode interface.
+ */
+public class LogView extends TextView implements LogNode {
+
+ public LogView(Context context) {
+ super(context);
+ }
+
+ public LogView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ }
+
+ public LogView(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ }
+
+ /**
+ * Formats the log data and prints it out to the LogView.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging
+ * facilities
+ * to extract and print useful information.
+ */
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+
+ String priorityStr = null;
+
+ // For the purposes of this View, we want to print the priority as readable text.
+ switch (priority) {
+ case android.util.Log.VERBOSE:
+ priorityStr = "VERBOSE";
+ break;
+ case android.util.Log.DEBUG:
+ priorityStr = "DEBUG";
+ break;
+ case android.util.Log.INFO:
+ priorityStr = "INFO";
+ break;
+ case android.util.Log.WARN:
+ priorityStr = "WARN";
+ break;
+ case android.util.Log.ERROR:
+ priorityStr = "ERROR";
+ break;
+ case android.util.Log.ASSERT:
+ priorityStr = "ASSERT";
+ break;
+ default:
+ break;
+ }
+
+ // Handily, the Log class has a facility for converting a stack trace into a usable string.
+ String exceptionStr = null;
+ if (tr != null) {
+ exceptionStr = android.util.Log.getStackTraceString(tr);
+ }
+
+ // Take the priority, tag, message, and exception, and concatenate as necessary
+ // into one usable line of text.
+ final StringBuilder outputBuilder = new StringBuilder();
+
+ String delimiter = "\t";
+ appendIfNotNull(outputBuilder, priorityStr, delimiter);
+ appendIfNotNull(outputBuilder, tag, delimiter);
+ appendIfNotNull(outputBuilder, msg, delimiter);
+ appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+ // In case this was originally called from an AsyncTask or some other off-UI thread,
+ // make sure the update occurs within the UI thread.
+ ((Activity) getContext()).runOnUiThread((new Thread(new Runnable() {
+ @Override
+ public void run() {
+ // Display the text we just generated within the LogView.
+ appendToLog(outputBuilder.toString());
+ }
+ })));
+
+ if (mNext != null) {
+ mNext.println(priority, tag, msg, tr);
+ }
+ }
+
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+ /**
+ * Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+ * the logger takes so many arguments that might be null, this method helps cut out some of the
+ * agonizing tedium of writing the same 3 lines over and over.
+ *
+ * @param source StringBuilder containing the text to append to.
+ * @param addStr The String to append
+ * @param delimiter The String to separate the source and appended strings. A tab or comma,
+ * for instance.
+ * @return The fully concatenated String as a StringBuilder
+ */
+ private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+ if (addStr != null) {
+ if (addStr.length() == 0) {
+ delimiter = "";
+ }
+
+ return source.append(addStr).append(delimiter);
+ }
+ return source;
+ }
+
+ // The next LogNode in the chain.
+ LogNode mNext;
+
+ /** Outputs the string as a new line of log data in the LogView. */
+ public void appendToLog(String s) {
+ append("\n" + s);
+ }
+
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogWrapper.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..cacf162
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface. This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+ // For piping: The next node to receive Log data after this one has done its work.
+ private LogNode mNext;
+
+ /**
+ * Returns the next LogNode in the linked list.
+ */
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to..
+ */
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+ /**
+ * Prints data out to the console using Android's native log mechanism.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging
+ * facilities
+ * to extract and print useful information.
+ */
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+ // There actually are log methods that don't take a msg parameter. For now,
+ // if that's the case, just convert null to the empty string and move on.
+ String useMsg = msg;
+ if (useMsg == null) {
+ useMsg = "";
+ }
+
+ // If an exeption was provided, convert that exception to a usable string and attach
+ // it to the end of the msg method.
+ if (tr != null) {
+ msg += "\n" + Log.getStackTraceString(tr);
+ }
+
+ // This is functionally identical to Log.x(tag, useMsg);
+ // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+ Log.println(priority, tag, useMsg);
+
+ // If this isn't the last node in the chain, move things along.
+ if (mNext != null) {
+ mNext.println(priority, tag, msg, tr);
+ }
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..bc38174
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata
+ * displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+ LogNode mNext;
+
+ /**
+ * Takes the "next" LogNode as a parameter, to simplify chaining.
+ *
+ * @param next The next LogNode in the pipeline.
+ */
+ public MessageOnlyLogFilter(LogNode next) {
+ mNext = next;
+ }
+
+ public MessageOnlyLogFilter() {
+ }
+
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+ if (mNext != null) {
+ getNext().println(Log.NONE, null, msg, null);
+ }
+ }
+
+ /**
+ * Returns the next LogNode in the chain.
+ */
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to..
+ */
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/DragSourceFragment.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/DragSourceFragment.java
new file mode 100644
index 0000000..a9cd7c4
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/DragSourceFragment.java
@@ -0,0 +1,235 @@
+/*
+ * Copyright 2015, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+package com.example.android.dragsource;
+
+import com.example.android.common.logger.Log;
+
+import android.content.ClipData;
+import android.content.ClipDescription;
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Point;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.support.annotation.Nullable;
+import android.support.v13.view.DragStartHelper;
+import android.support.v4.app.Fragment;
+import android.support.v4.content.FileProvider;
+import android.view.DragEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.Date;
+
+
+/**
+ * This sample demonstrates data can be moved between views within the app or between different
+ * apps via drag and drop.
+ * <p>This is the source app for the drag and drop sample. This app contains several
+ * {@link android.widget.ImageView} widgets which can be a drag source. Images can be dropped
+ * to a drop target area within the same app or in the DropTarget app (a separate app in this
+ * sample).
+ * <p>
+ * There is also one {@link android.widget.EditText} widget that can be a drag source (no extra
+ * setup is necessary).
+ * <p/>
+ * To enable cross application drag and drop, the {@link android.view.View#DRAG_FLAG_GLOBAL}
+ * permission needs to be passed to the {@link android.view.View#startDragAndDrop(ClipData,
+ * View.DragShadowBuilder, Object, int)} method. If a Uri
+ * requiring permission grants is being sent, then the
+ * {@link android.view.View#DRAG_FLAG_GLOBAL_URI_READ} and/or the
+ * {@link android.view.View#DRAG_FLAG_GLOBAL_URI_WRITE} flags must be used also.
+ */
+public class DragSourceFragment extends Fragment {
+
+ /**
+ * Name of saved data that stores the dropped image URI on the local ImageView when set.
+ */
+ private static final String IMAGE_URI = "IMAGE_URI";
+
+ /**
+ * Name of the parameter for a {@link ClipData} extra that stores a text describing the dragged
+ * image.
+ */
+ public static final String EXTRA_IMAGE_INFO = "IMAGE_INFO";
+
+ /**
+ * Uri of the ImageView source when set.
+ */
+ private Uri mLocalImageUri;
+
+ private static final String TAG = "DragSourceFragment";
+
+ private static final String CONTENT_AUTHORITY = "com.example.android.dragsource.fileprovider";
+
+ @Nullable
+ @Override
+ public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
+ @Nullable Bundle savedInstanceState) {
+
+ View view = inflater.inflate(R.layout.fragment_dragsource, null);
+
+ // Set up two image views for global drag and drop with a permission grant.
+ Uri imageUri = getFileUri(R.drawable.image1, "image1.png");
+ ImageView imageView = (ImageView) view.findViewById(R.id.image_one);
+ setUpDraggableImage(imageView, imageUri);
+ imageView.setImageURI(imageUri);
+
+ imageUri = getFileUri(R.drawable.image2, "image2.png");
+ imageView = (ImageView) view.findViewById(R.id.image_two);
+ setUpDraggableImage(imageView, imageUri);
+ imageView.setImageURI(imageUri);
+
+ // Set up the local drop target area.
+ final ImageView localImageTarget = (ImageView) view.findViewById(R.id.local_target);
+ localImageTarget.setOnDragListener(new ImageDragListener() {
+ @Override
+ protected boolean setImageUri(View view, DragEvent event, Uri uri) {
+ mLocalImageUri = uri;
+ Log.d(TAG, "Setting local image to: " + uri);
+ return super.setImageUri(view, event, uri);
+ }
+ });
+
+ if (savedInstanceState != null) {
+ final String uriString = savedInstanceState.getString(IMAGE_URI);
+ if (uriString != null) {
+ mLocalImageUri = Uri.parse(uriString);
+ Log.d(TAG, "Restoring local image to: " + mLocalImageUri);
+ localImageTarget.setImageURI(mLocalImageUri);
+ }
+ }
+ return view;
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle savedInstanceState) {
+ if (mLocalImageUri != null) {
+ savedInstanceState.putString(IMAGE_URI, mLocalImageUri.toString());
+ }
+ super.onSaveInstanceState(savedInstanceState);
+ }
+
+ private void setUpDraggableImage(ImageView imageView, final Uri imageUri) {
+
+ // Set up a listener that starts the drag and drop event with flags and extra data.
+ DragStartHelper.OnDragStartListener listener = new DragStartHelper.OnDragStartListener() {
+ @Override
+ public boolean onDragStart(View view, final DragStartHelper helper) {
+ Log.d(TAG, "Drag start event received from helper.");
+
+ // Use a DragShadowBuilder
+ View.DragShadowBuilder shadowBuilder = new View.DragShadowBuilder(view) {
+ @Override
+ public void onProvideShadowMetrics(Point shadowSize, Point shadowTouchPoint) {
+ super.onProvideShadowMetrics(shadowSize, shadowTouchPoint);
+ // Notify the DragStartHelper of point where the view was touched.
+ helper.getTouchPosition(shadowTouchPoint);
+ Log.d(TAG, "View was touched at: " + shadowTouchPoint);
+ }
+ };
+
+ // Set up the flags for the drag event.
+ // Enable drag and drop across apps (global)
+ // and require read permissions for this URI.
+ int flags = View.DRAG_FLAG_GLOBAL | View.DRAG_FLAG_GLOBAL_URI_READ;
+
+ // Add an optional clip description that that contains an extra String that is
+ // read out by the target app.
+ final ClipDescription clipDescription = new ClipDescription("", new String[]{
+ ClipDescription.MIMETYPE_TEXT_URILIST});
+ // Extras are stored within a PersistableBundle.
+ PersistableBundle extras = new PersistableBundle(1);
+ // Add a String that the target app will display.
+ extras.putString(EXTRA_IMAGE_INFO,
+ "Drag Started at " + new Date());
+ clipDescription.setExtras(extras);
+
+ // The ClipData object describes the object that is being dragged and dropped.
+ final ClipData clipData =
+ new ClipData(clipDescription, new ClipData.Item(imageUri));
+
+ Log.d(TAG, "Created ClipDescription. Starting drag and drop.");
+ // Start the drag and drop event.
+ return view.startDragAndDrop(clipData, shadowBuilder, null, flags);
+
+ }
+
+ };
+
+ // Use the DragStartHelper to detect drag and drop events and use the OnDragStartListener
+ // defined above to start the event when it has been detected.
+ DragStartHelper helper = new DragStartHelper(imageView, listener);
+ helper.attach();
+ Log.d(TAG, "DragStartHelper attached to view.");
+ }
+
+ /**
+ * Copy a drawable resource into local storage and makes it available via the
+ * {@link FileProvider}.
+ *
+ * @see Context#getFilesDir()
+ * @see FileProvider
+ * @see FileProvider#getUriForFile(Context, String, File)
+ */
+ private Uri getFileUri(int sourceResourceId, String targetName) {
+ // Create the images/ sub directory if it does not exist yet.
+ File filePath = new File(getContext().getFilesDir(), "images");
+ if (!filePath.exists() && !filePath.mkdir()) {
+ return null;
+ }
+
+ // Copy a drawable from resources to the internal directory.
+ File newFile = new File(filePath, targetName);
+ copyImageResourceToFile(sourceResourceId, newFile);
+
+ // Make the file accessible via the FileProvider and retrieve its URI.
+ return FileProvider.getUriForFile(getContext(), CONTENT_AUTHORITY, newFile);
+ }
+
+
+ /**
+ * Copy a PNG resource drawable to a {@File}.
+ */
+ private void copyImageResourceToFile(int resourceId, File filePath) {
+ Bitmap image = BitmapFactory.decodeResource(getResources(), resourceId);
+
+ FileOutputStream out = null;
+ try {
+ out = new FileOutputStream(filePath);
+ image.compress(Bitmap.CompressFormat.PNG, 100, out);
+ } catch (Exception e) {
+ e.printStackTrace();
+ } finally {
+ try {
+ if (out != null) {
+ out.close();
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/ImageDragListener.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/ImageDragListener.java
new file mode 100644
index 0000000..8ad2864
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/ImageDragListener.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2016, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.dragsource;
+
+import android.content.ClipData;
+import android.net.Uri;
+import android.view.DragEvent;
+import android.view.View;
+import android.widget.ImageView;
+
+/**
+ * OnDragListener for ImageViews.
+ * Sets colors of the target when DragEvents fire. When a drop is received, the {@link Uri} backing
+ * the first {@link android.content.ClipData.Item} in the {@link DragEvent} is set as the image
+ * resource of the ImageView.
+ */
+public class ImageDragListener implements View.OnDragListener {
+
+ private static final int COLOR_INACTIVE = 0xFF888888;
+
+ private static final int COLOR_ACTIVE = 0xFFCCCCCC;
+
+ private static final int COLOR_HOVER = 0xFFEEEEEE;
+
+ @Override
+ public boolean onDrag(View view, DragEvent event) {
+ // Change the color of the target for all events.
+ // For the drop action, set the view to the dropped image.
+ switch (event.getAction()) {
+ case DragEvent.ACTION_DRAG_STARTED:
+ setTargetColor(view, COLOR_ACTIVE);
+ return true;
+
+ case DragEvent.ACTION_DRAG_ENTERED:
+ setTargetColor(view, COLOR_HOVER);
+ return true;
+
+ case DragEvent.ACTION_DRAG_LOCATION:
+ processLocation(event.getX(), event.getY());
+ return true;
+
+ case DragEvent.ACTION_DRAG_EXITED:
+ setTargetColor(view, COLOR_ACTIVE);
+ return true;
+
+ case DragEvent.ACTION_DROP:
+ return processDrop(view, event);
+
+ case DragEvent.ACTION_DRAG_ENDED:
+ setTargetColor(view, COLOR_INACTIVE);
+ return true;
+
+ default:
+ break;
+ }
+
+ return false;
+ }
+
+ private void setTargetColor(View view, int color) {
+ view.setBackgroundColor(color);
+ }
+
+ private boolean processDrop(View view, DragEvent event) {
+ ClipData clipData = event.getClipData();
+ if (clipData == null || clipData.getItemCount() == 0) {
+ return false;
+ }
+ ClipData.Item item = clipData.getItemAt(0);
+ if (item == null) {
+ return false;
+ }
+ Uri uri = item.getUri();
+ if (uri == null) {
+ return false;
+ }
+ return setImageUri(view, event, uri);
+ }
+
+ protected void processLocation(float x, float y) {
+ }
+
+ protected boolean setImageUri(View view, DragEvent event, Uri uri) {
+ if (!(view instanceof ImageView)) {
+ return false;
+ }
+ ((ImageView) view).setImageURI(uri);
+ return true;
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/MainActivity.java b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/MainActivity.java
new file mode 100644
index 0000000..67bbb6c
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/java/com/example/android/dragsource/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+package com.example.android.dragsource;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+ public static final String TAG = "MainActivity";
+
+ // Whether the Log Fragment is currently shown
+ private boolean mLogShown;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+
+ if (savedInstanceState == null) {
+ FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+ DragSourceFragment fragment = new DragSourceFragment();
+ transaction.replace(R.id.sample_content_fragment, fragment);
+ transaction.commit();
+ }
+ }
+
+ @Override
+ public boolean onCreateOptionsMenu(Menu menu) {
+ getMenuInflater().inflate(R.menu.main, menu);
+ return true;
+ }
+
+ @Override
+ public boolean onPrepareOptionsMenu(Menu menu) {
+ MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+ logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+ logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+ return super.onPrepareOptionsMenu(menu);
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ switch (item.getItemId()) {
+ case R.id.menu_toggle_log:
+ mLogShown = !mLogShown;
+ ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+ if (mLogShown) {
+ output.setDisplayedChild(1);
+ } else {
+ output.setDisplayedChild(0);
+ }
+ supportInvalidateOptionsMenu();
+ return true;
+ }
+ return super.onOptionsItemSelected(item);
+ }
+
+ /** Create a chain of targets that will receive log data */
+ @Override
+ public void initializeLogging() {
+ // Wraps Android's native log framework.
+ LogWrapper logWrapper = new LogWrapper();
+ // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+ Log.setLogNode(logWrapper);
+
+ // Filter strips out everything except the message text.
+ MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+ logWrapper.setNext(msgFilter);
+
+ // On screen logging via a fragment with a TextView.
+ LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+ .findFragmentById(R.id.log_fragment);
+ msgFilter.setNext(logFragment.getLogView());
+
+ Log.i(TAG, "Ready");
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable-hdpi/tile.9.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image1.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image1.png
new file mode 100644
index 0000000..c460737
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image1.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image2.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image2.png
new file mode 100644
index 0000000..9d07a1b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/drawable/image2.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout-w720dp/activity_main.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..efc54b7
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,72 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+<LinearLayout android:id="@+id/sample_main_layout"
+ xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:orientation="horizontal">
+
+ <LinearLayout
+ android:id="@+id/sample_output"
+ android:layout_width="0px"
+ android:layout_height="match_parent"
+ android:layout_weight="1"
+ android:orientation="vertical">
+
+ <FrameLayout
+ style="@style/Widget.SampleMessageTile"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content">
+
+ <TextView
+ style="@style/Widget.SampleMessage"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:paddingBottom="@dimen/margin_large"
+ android:paddingLeft="@dimen/margin_medium"
+ android:paddingRight="@dimen/margin_medium"
+ android:paddingTop="@dimen/margin_large"
+ android:text="@string/intro_message" />
+ </FrameLayout>
+
+ <View
+ android:layout_width="match_parent"
+ android:layout_height="1dp"
+ android:background="@android:color/darker_gray" />
+
+ <fragment
+ android:id="@+id/log_fragment"
+ android:name="com.example.android.common.logger.LogFragment"
+ android:layout_width="match_parent"
+ android:layout_height="0px"
+ android:layout_weight="1" />
+
+ </LinearLayout>
+
+ <View
+ android:layout_width="1dp"
+ android:layout_height="match_parent"
+ android:background="@android:color/darker_gray" />
+
+ <FrameLayout
+ android:id="@+id/sample_content_fragment"
+ android:layout_width="0px"
+ android:layout_height="match_parent"
+ android:layout_weight="2" />
+
+</LinearLayout>
+
+
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/activity_main.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..17bc911
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/activity_main.xml
@@ -0,0 +1,64 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:id="@+id/sample_main_layout">
+
+ <ViewAnimator
+ android:id="@+id/sample_output"
+ android:layout_width="match_parent"
+ android:layout_height="0px"
+ android:layout_weight="1">
+
+ <ScrollView
+ style="@style/Widget.SampleMessageTile"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent">
+
+ <TextView
+ style="@style/Widget.SampleMessage"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:paddingLeft="@dimen/horizontal_page_margin"
+ android:paddingRight="@dimen/horizontal_page_margin"
+ android:paddingTop="@dimen/vertical_page_margin"
+ android:paddingBottom="@dimen/vertical_page_margin"
+ android:text="@string/intro_message" />
+ </ScrollView>
+
+ <fragment
+ android:name="com.example.android.common.logger.LogFragment"
+ android:id="@+id/log_fragment"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent" />
+
+ </ViewAnimator>
+
+ <View
+ android:layout_width="match_parent"
+ android:layout_height="1dp"
+ android:background="@android:color/darker_gray" />
+
+ <FrameLayout
+ android:id="@+id/sample_content_fragment"
+ android:layout_weight="2"
+ android:layout_width="match_parent"
+ android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/fragment_dragsource.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/fragment_dragsource.xml
new file mode 100644
index 0000000..a46ba0a
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/layout/fragment_dragsource.xml
@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:orientation="vertical">
+
+ <LinearLayout
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:orientation="vertical">
+
+ <LinearLayout
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:layout_marginBottom="@dimen/section_marginBottom"
+ android:layout_marginLeft="@dimen/section_marginLeft"
+ android:layout_marginRight="@dimen/section_marginRight"
+ android:layout_marginTop="@dimen/section_marginTop"
+ android:gravity="center"
+ android:orientation="horizontal">
+
+ <ImageView
+ android:id="@+id/image_one"
+ android:layout_width="@dimen/image_size"
+ android:layout_height="@dimen/image_size"
+ android:layout_margin="@dimen/image_margin"
+ android:background="@color/drag_inactive"
+ android:scaleType="centerCrop"
+ />
+
+ <ImageView
+ android:id="@+id/image_two"
+ android:layout_width="@dimen/image_size"
+ android:layout_height="@dimen/image_size"
+ android:layout_margin="@dimen/image_margin"
+ android:background="@color/drag_inactive"
+ android:scaleType="centerCrop"
+ />
+
+ </LinearLayout>
+
+ <TextView
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:layout_margin="@dimen/text_margin"
+ android:layout_marginBottom="@dimen/section_marginBottom"
+ android:text="@string/drag_instruction" />
+
+ <LinearLayout
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:layout_marginBottom="@dimen/section_marginBottom"
+ android:layout_marginLeft="@dimen/section_marginLeft"
+ android:layout_marginRight="@dimen/section_marginRight"
+ android:layout_marginTop="@dimen/section_marginTop"
+ android:gravity="center"
+ android:orientation="horizontal">
+
+ <ImageView
+ android:id="@+id/local_target"
+ android:layout_width="@dimen/image_size"
+ android:layout_height="@dimen/image_size"
+ android:layout_margin="@dimen/image_margin"
+ android:background="@color/drag_inactive"
+ android:pointerIcon="crosshair"
+ android:scaleType="centerCrop" />
+
+ <TextView
+ android:layout_width="@dimen/text_size"
+ android:layout_height="wrap_content"
+ android:layout_margin="@dimen/text_margin"
+ android:layout_weight="1"
+ android:text="Drop your image here." />
+
+ </LinearLayout>
+
+
+ </LinearLayout>
+</ScrollView>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/menu/main.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/menu/main.xml
new file mode 100644
index 0000000..480cafe
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/menu/main.xml
@@ -0,0 +1,22 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+ <item
+ android:id="@+id/menu_toggle_log"
+ android:showAsAction="always"
+ android:title="@string/sample_show_log" />
+</menu>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-hdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..125edc6
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-hdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-mdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..00e2d79
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-mdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..0d0d8ee
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..a387e3c
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..f33d5bb
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/mipmap-xxxhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-dimens.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Semantic definitions -->
+
+ <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+ <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-styles.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <style name="Widget.SampleMessage">
+ <item name="android:textAppearance">?android:textAppearanceLarge</item>
+ <item name="android:lineSpacingMultiplier">1.2</item>
+ <item name="android:shadowDy">-6.5</item>
+ </style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v11/template-styles.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v11/template-styles.xml
new file mode 100644
index 0000000..8c1ea66
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v11/template-styles.xml
@@ -0,0 +1,22 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Activity themes -->
+ <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-colors.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-colors.xml
new file mode 100644
index 0000000..b662ae2
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-colors.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-template-styles.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-template-styles.xml
new file mode 100644
index 0000000..d95b9b7
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values-v21/base-template-styles.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+
+ <!-- Activity themes -->
+ <style name="Theme.Base" parent="android:Theme.Material.Light"></style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/colors.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/colors.xml
new file mode 100644
index 0000000..801e292
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/colors.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+ <color name="drag_inactive">#ff888888</color>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/dimen.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/dimen.xml
new file mode 100644
index 0000000..220d1b8
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/dimen.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+ <dimen name="section_marginTop">16dp</dimen>
+ <dimen name="section_marginBottom">0dp</dimen>
+ <dimen name="section_marginLeft">16dp</dimen>
+ <dimen name="section_marginRight">16dp</dimen>
+
+ <dimen name="image_size">80dp</dimen>
+ <dimen name="image_margin">16dp</dimen>
+
+ <dimen name="text_size">0dp</dimen>
+ <dimen name="text_margin">10dp</dimen>
+ <dimen name="checkbox_margin">6dp</dimen>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/fragmentview_strings.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/fragmentview_strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/fragmentview_strings.xml
@@ -0,0 +1,19 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<resources>
+ <string name="sample_show_log">Show Log</string>
+ <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/strings.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/strings.xml
new file mode 100644
index 0000000..f2ab092
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/strings.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2015 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+ <string name="drag_instruction">These images can be dragged to any app.\nTry dragging it to the area below.</string>
+ <string name="intro_message">This sample demonstrates drag and drop functionality and is the \'source\' app for this sample. It shows how data can be moved between views within an app or between different apps.\nTry dragging one of the images to the highlighted target in this app.\nOpen the \'DropTarget\' sample app next to this app and try dragging an image between the two apps.\nImages are served through a content provider. The target app must request permission to access the dropped content.</string>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-dimens.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+ <dimen name="margin_tiny">4dp</dimen>
+ <dimen name="margin_small">8dp</dimen>
+ <dimen name="margin_medium">16dp</dimen>
+ <dimen name="margin_large">32dp</dimen>
+ <dimen name="margin_huge">64dp</dimen>
+
+ <!-- Semantic definitions -->
+
+ <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+ <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-styles.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..6e7d593
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Activity themes -->
+
+ <style name="Theme.Base" parent="android:Theme.Light" />
+
+ <style name="Theme.Sample" parent="Theme.Base" />
+
+ <style name="AppTheme" parent="Theme.Sample" />
+ <!-- Widget styling -->
+
+ <style name="Widget" />
+
+ <style name="Widget.SampleMessage">
+ <item name="android:textAppearance">?android:textAppearanceMedium</item>
+ <item name="android:lineSpacingMultiplier">1.1</item>
+ </style>
+
+ <style name="Widget.SampleMessageTile">
+ <item name="android:background">@drawable/tile</item>
+ <item name="android:shadowColor">#7F000000</item>
+ <item name="android:shadowDy">-3.5</item>
+ <item name="android:shadowRadius">2</item>
+ </style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/xml/file_paths.xml b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/xml/file_paths.xml
new file mode 100644
index 0000000..53c0887
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DragSource/src/main/res/xml/file_paths.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<paths>
+ <files-path name="my_images" path="images" />
+</paths>
\ No newline at end of file
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/.gitignore b/ui/window/DragAndDropAcrossApps/DropTarget/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/build.gradle b/ui/window/DragAndDropAcrossApps/DropTarget/build.gradle
new file mode 100644
index 0000000..f487522
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/build.gradle
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+buildscript {
+ repositories {
+ jcenter()
+ }
+
+ dependencies {
+ classpath 'com.android.tools.build:gradle:2.1.2'
+ }
+}
+
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 24
+ buildToolsVersion "23.0.2"
+
+ defaultConfig {
+ applicationId "com.example.android.droptarget"
+ minSdkVersion 24
+ targetSdkVersion 24
+ versionCode 1
+ versionName "1.0"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+}
+
+dependencies {
+ compile fileTree(dir: 'libs', include: ['*.jar'])
+ compile 'com.android.support:appcompat-v7:24.0.0'
+ compile 'com.android.support:support-v13:24.0.0'
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/proguard-rules.pro b/ui/window/DragAndDropAcrossApps/DropTarget/proguard-rules.pro
new file mode 100644
index 0000000..06d280f
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/proguard-rules.pro
@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /usr/local/google/home/rkc/work/android/master/out/host/linux-x86/sdk/sdk/android-sdk_eng.rkc_linux-x86/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/AndroidManifest.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..02f39b2
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/AndroidManifest.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2015 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.example.android.droptarget">
+
+ <application android:label="DropTarget Sample"
+ android:icon="@mipmap/ic_launcher">
+ <activity android:name=".MainActivity">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+</manifest>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/activities/SampleActivityBase.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/activities/SampleActivityBase.java
new file mode 100644
index 0000000..3228927
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/activities/SampleActivityBase.java
@@ -0,0 +1,52 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.activities;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogWrapper;
+
+/**
+ * Base launcher activity, to handle most of the common plumbing for samples.
+ */
+public class SampleActivityBase extends FragmentActivity {
+
+ public static final String TAG = "SampleActivityBase";
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ }
+
+ @Override
+ protected void onStart() {
+ super.onStart();
+ initializeLogging();
+ }
+
+ /** Set up targets to receive log data */
+ public void initializeLogging() {
+ // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+ // Wraps Android's native log framework
+ LogWrapper logWrapper = new LogWrapper();
+ Log.setLogNode(logWrapper);
+
+ Log.i(TAG, "Ready");
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/Log.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/Log.java
new file mode 100644
index 0000000..17503c5
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/Log.java
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Helper class for a list (or tree) of LoggerNodes.
+ *
+ * <p>When this is set as the head of the list,
+ * an instance of it can function as a drop-in replacement for {@link android.util.Log}.
+ * Most of the methods in this class server only to map a method call in Log to its equivalent
+ * in LogNode.</p>
+ */
+public class Log {
+ // Grabbing the native values from Android's native logging facilities,
+ // to make for easy migration and interop.
+ public static final int NONE = -1;
+ public static final int VERBOSE = android.util.Log.VERBOSE;
+ public static final int DEBUG = android.util.Log.DEBUG;
+ public static final int INFO = android.util.Log.INFO;
+ public static final int WARN = android.util.Log.WARN;
+ public static final int ERROR = android.util.Log.ERROR;
+ public static final int ASSERT = android.util.Log.ASSERT;
+
+ // Stores the beginning of the LogNode topology.
+ private static LogNode mLogNode;
+
+ /**
+ * Returns the next LogNode in the linked list.
+ */
+ public static LogNode getLogNode() {
+ return mLogNode;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to.
+ */
+ public static void setLogNode(LogNode node) {
+ mLogNode = node;
+ }
+
+ /**
+ * Instructs the LogNode to print the log data provided. Other LogNodes can
+ * be chained to the end of the LogNode as desired.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void println(int priority, String tag, String msg, Throwable tr) {
+ if (mLogNode != null) {
+ mLogNode.println(priority, tag, msg, tr);
+ }
+ }
+
+ /**
+ * Instructs the LogNode to print the log data provided. Other LogNodes can
+ * be chained to the end of the LogNode as desired.
+ *
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ */
+ public static void println(int priority, String tag, String msg) {
+ println(priority, tag, msg, null);
+ }
+
+ /**
+ * Prints a message at VERBOSE priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void v(String tag, String msg, Throwable tr) {
+ println(VERBOSE, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at VERBOSE priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void v(String tag, String msg) {
+ v(tag, msg, null);
+ }
+
+
+ /**
+ * Prints a message at DEBUG priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void d(String tag, String msg, Throwable tr) {
+ println(DEBUG, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at DEBUG priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void d(String tag, String msg) {
+ d(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at INFO priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void i(String tag, String msg, Throwable tr) {
+ println(INFO, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at INFO priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void i(String tag, String msg) {
+ i(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void w(String tag, String msg, Throwable tr) {
+ println(WARN, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void w(String tag, String msg) {
+ w(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at WARN priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void w(String tag, Throwable tr) {
+ w(tag, null, tr);
+ }
+
+ /**
+ * Prints a message at ERROR priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void e(String tag, String msg, Throwable tr) {
+ println(ERROR, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at ERROR priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void e(String tag, String msg) {
+ e(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void wtf(String tag, String msg, Throwable tr) {
+ println(ASSERT, tag, msg, tr);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged.
+ */
+ public static void wtf(String tag, String msg) {
+ wtf(tag, msg, null);
+ }
+
+ /**
+ * Prints a message at ASSERT priority.
+ *
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public static void wtf(String tag, Throwable tr) {
+ wtf(tag, null, tr);
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogFragment.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogFragment.java
new file mode 100644
index 0000000..c1f369a
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogFragment.java
@@ -0,0 +1,94 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.common.logger;
+
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.Gravity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ScrollView;
+
+/**
+ * Simple fragment which contains a LogView and uses is to output log data it receives
+ * through the LogNode interface.
+ */
+public class LogFragment extends Fragment {
+
+ private LogView mLogView;
+ private ScrollView mScrollView;
+
+ public LogFragment() {}
+
+ public View inflateViews() {
+ mScrollView = new ScrollView(getActivity());
+ ViewGroup.LayoutParams scrollParams = new ViewGroup.LayoutParams(
+ ViewGroup.LayoutParams.MATCH_PARENT,
+ ViewGroup.LayoutParams.MATCH_PARENT);
+ mScrollView.setLayoutParams(scrollParams);
+
+ mLogView = new LogView(getActivity());
+ ViewGroup.LayoutParams logParams = new ViewGroup.LayoutParams(scrollParams);
+ logParams.height = ViewGroup.LayoutParams.WRAP_CONTENT;
+ mLogView.setLayoutParams(logParams);
+ mLogView.setClickable(true);
+ mLogView.setFocusable(true);
+ mLogView.setTypeface(Typeface.MONOSPACE);
+
+ // Want to set padding as 16 dips, setPadding takes pixels. Hooray math!
+ int paddingDips = 16;
+ double scale = getResources().getDisplayMetrics().density;
+ int paddingPixels = (int) ((paddingDips * (scale)) + .5);
+ mLogView.setPadding(paddingPixels, paddingPixels, paddingPixels, paddingPixels);
+ mLogView.setCompoundDrawablePadding(paddingPixels);
+
+ mLogView.setGravity(Gravity.BOTTOM);
+ mLogView.setTextAppearance(getActivity(), android.R.style.TextAppearance_Holo_Medium);
+
+ mScrollView.addView(mLogView);
+ return mScrollView;
+ }
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+
+ View result = inflateViews();
+
+ mLogView.addTextChangedListener(new TextWatcher() {
+ @Override
+ public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+ @Override
+ public void onTextChanged(CharSequence s, int start, int before, int count) {}
+
+ @Override
+ public void afterTextChanged(Editable s) {
+ mScrollView.fullScroll(ScrollView.FOCUS_DOWN);
+ }
+ });
+ return result;
+ }
+
+ public LogView getLogView() {
+ return mLogView;
+ }
+}
\ No newline at end of file
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogNode.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogNode.java
new file mode 100644
index 0000000..bc37cab
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogNode.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Basic interface for a logging system that can output to one or more targets.
+ * Note that in addition to classes that will output these logs in some format,
+ * one can also implement this interface over a filter and insert that in the chain,
+ * such that no targets further down see certain data, or see manipulated forms of the data.
+ * You could, for instance, write a "ToHtmlLoggerNode" that just converted all the log data
+ * it received to HTML and sent it along to the next node in the chain, without printing it
+ * anywhere.
+ */
+public interface LogNode {
+
+ /**
+ * Instructs first LogNode in the list to print the log data provided.
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ public void println(int priority, String tag, String msg, Throwable tr);
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogView.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogView.java
new file mode 100644
index 0000000..c01542b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogView.java
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.app.Activity;
+import android.content.Context;
+import android.util.*;
+import android.widget.TextView;
+
+/** Simple TextView which is used to output log data received through the LogNode interface.
+*/
+public class LogView extends TextView implements LogNode {
+
+ public LogView(Context context) {
+ super(context);
+ }
+
+ public LogView(Context context, AttributeSet attrs) {
+ super(context, attrs);
+ }
+
+ public LogView(Context context, AttributeSet attrs, int defStyle) {
+ super(context, attrs, defStyle);
+ }
+
+ /**
+ * Formats the log data and prints it out to the LogView.
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+
+
+ String priorityStr = null;
+
+ // For the purposes of this View, we want to print the priority as readable text.
+ switch(priority) {
+ case android.util.Log.VERBOSE:
+ priorityStr = "VERBOSE";
+ break;
+ case android.util.Log.DEBUG:
+ priorityStr = "DEBUG";
+ break;
+ case android.util.Log.INFO:
+ priorityStr = "INFO";
+ break;
+ case android.util.Log.WARN:
+ priorityStr = "WARN";
+ break;
+ case android.util.Log.ERROR:
+ priorityStr = "ERROR";
+ break;
+ case android.util.Log.ASSERT:
+ priorityStr = "ASSERT";
+ break;
+ default:
+ break;
+ }
+
+ // Handily, the Log class has a facility for converting a stack trace into a usable string.
+ String exceptionStr = null;
+ if (tr != null) {
+ exceptionStr = android.util.Log.getStackTraceString(tr);
+ }
+
+ // Take the priority, tag, message, and exception, and concatenate as necessary
+ // into one usable line of text.
+ final StringBuilder outputBuilder = new StringBuilder();
+
+ String delimiter = "\t";
+ appendIfNotNull(outputBuilder, priorityStr, delimiter);
+ appendIfNotNull(outputBuilder, tag, delimiter);
+ appendIfNotNull(outputBuilder, msg, delimiter);
+ appendIfNotNull(outputBuilder, exceptionStr, delimiter);
+
+ // In case this was originally called from an AsyncTask or some other off-UI thread,
+ // make sure the update occurs within the UI thread.
+ ((Activity) getContext()).runOnUiThread( (new Thread(new Runnable() {
+ @Override
+ public void run() {
+ // Display the text we just generated within the LogView.
+ appendToLog(outputBuilder.toString());
+ }
+ })));
+
+ if (mNext != null) {
+ mNext.println(priority, tag, msg, tr);
+ }
+ }
+
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+ /** Takes a string and adds to it, with a separator, if the bit to be added isn't null. Since
+ * the logger takes so many arguments that might be null, this method helps cut out some of the
+ * agonizing tedium of writing the same 3 lines over and over.
+ * @param source StringBuilder containing the text to append to.
+ * @param addStr The String to append
+ * @param delimiter The String to separate the source and appended strings. A tab or comma,
+ * for instance.
+ * @return The fully concatenated String as a StringBuilder
+ */
+ private StringBuilder appendIfNotNull(StringBuilder source, String addStr, String delimiter) {
+ if (addStr != null) {
+ if (addStr.length() == 0) {
+ delimiter = "";
+ }
+
+ return source.append(addStr).append(delimiter);
+ }
+ return source;
+ }
+
+ // The next LogNode in the chain.
+ LogNode mNext;
+
+ /** Outputs the string as a new line of log data in the LogView. */
+ public void appendToLog(String s) {
+ append("\n" + s);
+ }
+
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogWrapper.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogWrapper.java
new file mode 100644
index 0000000..16a9e7b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/LogWrapper.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+import android.util.Log;
+
+/**
+ * Helper class which wraps Android's native Log utility in the Logger interface. This way
+ * normal DDMS output can be one of the many targets receiving and outputting logs simultaneously.
+ */
+public class LogWrapper implements LogNode {
+
+ // For piping: The next node to receive Log data after this one has done its work.
+ private LogNode mNext;
+
+ /**
+ * Returns the next LogNode in the linked list.
+ */
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to..
+ */
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+ /**
+ * Prints data out to the console using Android's native log mechanism.
+ * @param priority Log level of the data being logged. Verbose, Error, etc.
+ * @param tag Tag for for the log data. Can be used to organize log statements.
+ * @param msg The actual message to be logged. The actual message to be logged.
+ * @param tr If an exception was thrown, this can be sent along for the logging facilities
+ * to extract and print useful information.
+ */
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+ // There actually are log methods that don't take a msg parameter. For now,
+ // if that's the case, just convert null to the empty string and move on.
+ String useMsg = msg;
+ if (useMsg == null) {
+ useMsg = "";
+ }
+
+ // If an exeption was provided, convert that exception to a usable string and attach
+ // it to the end of the msg method.
+ if (tr != null) {
+ msg += "\n" + Log.getStackTraceString(tr);
+ }
+
+ // This is functionally identical to Log.x(tag, useMsg);
+ // For instance, if priority were Log.VERBOSE, this would be the same as Log.v(tag, useMsg)
+ Log.println(priority, tag, useMsg);
+
+ // If this isn't the last node in the chain, move things along.
+ if (mNext != null) {
+ mNext.println(priority, tag, msg, tr);
+ }
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
new file mode 100644
index 0000000..19967dc
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/common/logger/MessageOnlyLogFilter.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.example.android.common.logger;
+
+/**
+ * Simple {@link LogNode} filter, removes everything except the message.
+ * Useful for situations like on-screen log output where you don't want a lot of metadata displayed,
+ * just easy-to-read message updates as they're happening.
+ */
+public class MessageOnlyLogFilter implements LogNode {
+
+ LogNode mNext;
+
+ /**
+ * Takes the "next" LogNode as a parameter, to simplify chaining.
+ *
+ * @param next The next LogNode in the pipeline.
+ */
+ public MessageOnlyLogFilter(LogNode next) {
+ mNext = next;
+ }
+
+ public MessageOnlyLogFilter() {
+ }
+
+ @Override
+ public void println(int priority, String tag, String msg, Throwable tr) {
+ if (mNext != null) {
+ getNext().println(Log.NONE, null, msg, null);
+ }
+ }
+
+ /**
+ * Returns the next LogNode in the chain.
+ */
+ public LogNode getNext() {
+ return mNext;
+ }
+
+ /**
+ * Sets the LogNode data will be sent to..
+ */
+ public void setNext(LogNode node) {
+ mNext = node;
+ }
+
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/DropTargetFragment.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/DropTargetFragment.java
new file mode 100644
index 0000000..4b1cdb1
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/DropTargetFragment.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.android.droptarget;
+
+import com.example.android.common.logger.Log;
+
+import android.app.Activity;
+import android.content.ClipDescription;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.support.annotation.Nullable;
+import android.support.v13.app.ActivityCompat;
+import android.support.v13.view.DragAndDropPermissionsCompat;
+import android.support.v4.app.Fragment;
+import android.view.DragEvent;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+/**
+ * This sample demonstrates data can be moved between views in different applications via
+ * drag and drop.
+ * <p>This is the Target app for the drag and drop process. This app uses a
+ * {@link android.widget.ImageView} as the drop target. Images onto this
+ * view from the DragSource app that is also part of this sample.
+ * <p>
+ * There is also a {@link android.widget.EditText} widget that can accept dropped text (no
+ * extra setup is necessary).
+ * To access content URIs requiring permissions, the target app needs to request the
+ * {@link android.view.DragAndDropPermissions} from the Activity via
+ * {@link ActivityCompat#requestDragAndDropPermissions(Activity, DragEvent)}. This permission will
+ * stay either as long as the activity is alive, or until the release() method is called on the
+ * {@link android.view.DragAndDropPermissions} object.
+ */
+public class DropTargetFragment extends Fragment {
+
+ private static final String IMAGE_URI = "IMAGE_URI";
+
+ public static final String EXTRA_IMAGE_INFO = "IMAGE_INFO";
+
+ private static final String TAG = "DropTargetFragment";
+
+ private Uri mImageUri;
+
+ @Nullable
+ @Override
+ public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
+ @Nullable Bundle savedInstanceState) {
+
+ View rootView = inflater.inflate(R.layout.fragment_droptarget, container, false);
+ final ImageView imageView = (ImageView) rootView.findViewById(R.id.image_target);
+
+ ImageDragListener imageDragListener = new PermissionAwareImageDragListener();
+
+ imageView.setOnDragListener(imageDragListener);
+
+ // Restore the application state if an image was being displayed.
+ if (savedInstanceState != null) {
+ final String uriString = savedInstanceState.getString(IMAGE_URI);
+ if (uriString != null) {
+ mImageUri = Uri.parse(uriString);
+ imageView.setImageURI(mImageUri);
+ }
+ }
+
+ return rootView;
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle savedInstanceState) {
+ if (mImageUri != null) {
+ savedInstanceState.putString(IMAGE_URI, mImageUri.toString());
+ }
+ super.onSaveInstanceState(savedInstanceState);
+ }
+
+ private class PermissionAwareImageDragListener extends ImageDragListener {
+
+ @Override
+ protected void processLocation(float x, float y) {
+ // Callback is received when the dragged image enters the drop area.
+ }
+
+ @Override
+ protected boolean setImageUri(View view, DragEvent event, Uri uri) {
+ // Read the string from the clip description extras.
+ Log.d(TAG, "ClipDescription extra: " + getExtra(event));
+
+ // Request permissions to access the uri that was dropped.
+ Log.d(TAG, "Setting image source to: " + uri.toString());
+ mImageUri = uri;
+ DragAndDropPermissionsCompat dropPermissions = ActivityCompat
+ .requestDragAndDropPermissions(getActivity(), event);
+ Log.d(TAG, "Requesting permissions.");
+
+ if (dropPermissions == null) {
+ // Permission could not be obtained.
+ Log.d(TAG, "Drop permission request failed.");
+ return false;
+ }
+
+ ((ImageView) view).setImageURI(uri);
+
+ /* Release the permissions now that we are done with the URI. Note that you may
+ need to hold onto the permission until later if other operations are performed on the
+ content.
+ If permissions are not explicitly released, the permission grant will be revoked when
+ the activity is destroyed.
+ */
+ dropPermissions.release();
+ Log.d(TAG, "Permissions released.");
+
+ return super.setImageUri(view, event, uri);
+ }
+
+ @Override
+ public boolean onDrag(View view, DragEvent event) {
+ // Callback received when image is being dragged.
+ return super.onDrag(view, event);
+ }
+ }
+
+ /**
+ * DragEvents can contain additional data packaged in a {@link PersistableBundle}.
+ * Extract the extras from the event and return the String stored for the
+ * {@link #EXTRA_IMAGE_INFO} entry.
+ */
+ private String getExtra(DragEvent event) {
+ // The extras are contained in the ClipDescription in the DragEvent.
+ ClipDescription clipDescription = event.getClipDescription();
+ if (clipDescription != null) {
+ PersistableBundle extras = clipDescription.getExtras();
+ if (extras != null) {
+ return extras.getString(EXTRA_IMAGE_INFO);
+ }
+ }
+ return null;
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/ImageDragListener.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/ImageDragListener.java
new file mode 100644
index 0000000..84a8b25
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/ImageDragListener.java
@@ -0,0 +1,96 @@
+/*
+* Copyright 2016, The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+package com.example.android.droptarget;
+
+import android.content.ClipData;
+import android.net.Uri;
+import android.view.DragEvent;
+import android.view.View;
+import android.widget.ImageView;
+
+public class ImageDragListener implements View.OnDragListener {
+
+ private static final int COLOR_INACTIVE = 0xFF888888;
+
+ private static final int COLOR_ACTIVE = 0xFFCCCCCC;
+
+ private static final int COLOR_HOVER = 0xFFEEEEEE;
+
+ @Override
+ public boolean onDrag(View view, DragEvent event) {
+ switch (event.getAction()) {
+ case DragEvent.ACTION_DRAG_STARTED:
+ setTargetColor(view, COLOR_ACTIVE);
+ return true;
+
+ case DragEvent.ACTION_DRAG_ENTERED:
+ setTargetColor(view, COLOR_HOVER);
+ return true;
+
+ case DragEvent.ACTION_DRAG_LOCATION:
+ processLocation(event.getX(), event.getY());
+ return true;
+
+ case DragEvent.ACTION_DRAG_EXITED:
+ setTargetColor(view, COLOR_ACTIVE);
+ return true;
+
+ case DragEvent.ACTION_DROP:
+ return processDrop(view, event);
+
+ case DragEvent.ACTION_DRAG_ENDED:
+ setTargetColor(view, COLOR_INACTIVE);
+ return true;
+
+ default:
+ break;
+ }
+
+ return false;
+ }
+
+ private void setTargetColor(View view, int color) {
+ view.setBackgroundColor(color);
+ }
+
+ private boolean processDrop(View view, DragEvent event) {
+ ClipData clipData = event.getClipData();
+ if (clipData == null || clipData.getItemCount() == 0) {
+ return false;
+ }
+ ClipData.Item item = clipData.getItemAt(0);
+ if (item == null) {
+ return false;
+ }
+ Uri uri = item.getUri();
+ if (uri == null) {
+ return false;
+ }
+ return setImageUri(view, event, uri);
+ }
+
+ protected void processLocation(float x, float y) {
+ }
+
+ protected boolean setImageUri(View view, DragEvent event, Uri uri) {
+ if (!(view instanceof ImageView)) {
+ return false;
+ }
+ ((ImageView) view).setImageURI(uri);
+ return true;
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/MainActivity.java b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/MainActivity.java
new file mode 100644
index 0000000..462f49b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/java/com/example/android/droptarget/MainActivity.java
@@ -0,0 +1,110 @@
+/*
+* Copyright 2013 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+
+package com.example.android.droptarget;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentTransaction;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.ViewAnimator;
+
+import com.example.android.common.activities.SampleActivityBase;
+import com.example.android.common.logger.Log;
+import com.example.android.common.logger.LogFragment;
+import com.example.android.common.logger.LogWrapper;
+import com.example.android.common.logger.MessageOnlyLogFilter;
+
+/**
+ * A simple launcher activity containing a summary sample description, sample log and a custom
+ * {@link android.support.v4.app.Fragment} which can display a view.
+ * <p>
+ * For devices with displays with a width of 720dp or greater, the sample log is always visible,
+ * on other devices it's visibility is controlled by an item on the Action Bar.
+ */
+public class MainActivity extends SampleActivityBase {
+
+ public static final String TAG = "MainActivity";
+
+ // Whether the Log Fragment is currently shown
+ private boolean mLogShown;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+
+ if (savedInstanceState == null) {
+ FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+ DropTargetFragment fragment = new DropTargetFragment();
+ transaction.replace(R.id.sample_content_fragment, fragment);
+ transaction.commit();
+ }
+ }
+
+ @Override
+ public boolean onCreateOptionsMenu(Menu menu) {
+ getMenuInflater().inflate(R.menu.main, menu);
+ return true;
+ }
+
+ @Override
+ public boolean onPrepareOptionsMenu(Menu menu) {
+ MenuItem logToggle = menu.findItem(R.id.menu_toggle_log);
+ logToggle.setVisible(findViewById(R.id.sample_output) instanceof ViewAnimator);
+ logToggle.setTitle(mLogShown ? R.string.sample_hide_log : R.string.sample_show_log);
+
+ return super.onPrepareOptionsMenu(menu);
+ }
+
+ @Override
+ public boolean onOptionsItemSelected(MenuItem item) {
+ switch(item.getItemId()) {
+ case R.id.menu_toggle_log:
+ mLogShown = !mLogShown;
+ ViewAnimator output = (ViewAnimator) findViewById(R.id.sample_output);
+ if (mLogShown) {
+ output.setDisplayedChild(1);
+ } else {
+ output.setDisplayedChild(0);
+ }
+ supportInvalidateOptionsMenu();
+ return true;
+ }
+ return super.onOptionsItemSelected(item);
+ }
+
+ /** Create a chain of targets that will receive log data */
+ @Override
+ public void initializeLogging() {
+ // Wraps Android's native log framework.
+ LogWrapper logWrapper = new LogWrapper();
+ // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+ Log.setLogNode(logWrapper);
+
+ // Filter strips out everything except the message text.
+ MessageOnlyLogFilter msgFilter = new MessageOnlyLogFilter();
+ logWrapper.setNext(msgFilter);
+
+ // On screen logging via a fragment with a TextView.
+ LogFragment logFragment = (LogFragment) getSupportFragmentManager()
+ .findFragmentById(R.id.log_fragment);
+ msgFilter.setNext(logFragment.getLogView());
+
+ Log.i(TAG, "Ready");
+ }
+}
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/drawable-hdpi/tile.9.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/drawable-hdpi/tile.9.png
new file mode 100644
index 0000000..1358628
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/drawable-hdpi/tile.9.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout-w720dp/activity_main.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout-w720dp/activity_main.xml
new file mode 100755
index 0000000..efc54b7
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout-w720dp/activity_main.xml
@@ -0,0 +1,72 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+<LinearLayout android:id="@+id/sample_main_layout"
+ xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:orientation="horizontal">
+
+ <LinearLayout
+ android:id="@+id/sample_output"
+ android:layout_width="0px"
+ android:layout_height="match_parent"
+ android:layout_weight="1"
+ android:orientation="vertical">
+
+ <FrameLayout
+ style="@style/Widget.SampleMessageTile"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content">
+
+ <TextView
+ style="@style/Widget.SampleMessage"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:paddingBottom="@dimen/margin_large"
+ android:paddingLeft="@dimen/margin_medium"
+ android:paddingRight="@dimen/margin_medium"
+ android:paddingTop="@dimen/margin_large"
+ android:text="@string/intro_message" />
+ </FrameLayout>
+
+ <View
+ android:layout_width="match_parent"
+ android:layout_height="1dp"
+ android:background="@android:color/darker_gray" />
+
+ <fragment
+ android:id="@+id/log_fragment"
+ android:name="com.example.android.common.logger.LogFragment"
+ android:layout_width="match_parent"
+ android:layout_height="0px"
+ android:layout_weight="1" />
+
+ </LinearLayout>
+
+ <View
+ android:layout_width="1dp"
+ android:layout_height="match_parent"
+ android:background="@android:color/darker_gray" />
+
+ <FrameLayout
+ android:id="@+id/sample_content_fragment"
+ android:layout_width="0px"
+ android:layout_height="match_parent"
+ android:layout_weight="2" />
+
+</LinearLayout>
+
+
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/activity_main.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/activity_main.xml
new file mode 100755
index 0000000..17bc911
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/activity_main.xml
@@ -0,0 +1,64 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:id="@+id/sample_main_layout">
+
+ <ViewAnimator
+ android:id="@+id/sample_output"
+ android:layout_width="match_parent"
+ android:layout_height="0px"
+ android:layout_weight="1">
+
+ <ScrollView
+ style="@style/Widget.SampleMessageTile"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent">
+
+ <TextView
+ style="@style/Widget.SampleMessage"
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:paddingLeft="@dimen/horizontal_page_margin"
+ android:paddingRight="@dimen/horizontal_page_margin"
+ android:paddingTop="@dimen/vertical_page_margin"
+ android:paddingBottom="@dimen/vertical_page_margin"
+ android:text="@string/intro_message" />
+ </ScrollView>
+
+ <fragment
+ android:name="com.example.android.common.logger.LogFragment"
+ android:id="@+id/log_fragment"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent" />
+
+ </ViewAnimator>
+
+ <View
+ android:layout_width="match_parent"
+ android:layout_height="1dp"
+ android:background="@android:color/darker_gray" />
+
+ <FrameLayout
+ android:id="@+id/sample_content_fragment"
+ android:layout_weight="2"
+ android:layout_width="match_parent"
+ android:layout_height="0px" />
+
+</LinearLayout>
+
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/fragment_droptarget.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/fragment_droptarget.xml
new file mode 100644
index 0000000..328247d
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/layout/fragment_droptarget.xml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:orientation="vertical">
+
+ <LinearLayout
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_margin="@dimen/section_margin"
+ android:gravity="center"
+ android:orientation="horizontal">
+
+ <ImageView
+ android:id="@+id/image_target"
+ android:layout_width="@dimen/image_size"
+ android:layout_height="@dimen/image_size"
+ android:background="@color/drag_inactive"
+ android:pointerIcon="crosshair"
+ android:scaleType="centerCrop" />
+
+ <TextView
+ android:layout_width="match_parent"
+ android:layout_height="wrap_content"
+ android:layout_margin="@dimen/text_margin"
+ android:text="@string/image_target_prompt" />
+
+ </LinearLayout>
+</ScrollView>
\ No newline at end of file
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/menu/main.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/menu/main.xml
new file mode 100644
index 0000000..480cafe
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/menu/main.xml
@@ -0,0 +1,22 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+ <item
+ android:id="@+id/menu_toggle_log"
+ android:showAsAction="always"
+ android:title="@string/sample_show_log" />
+</menu>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-hdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..0732a10
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-hdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-mdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..6f8f369
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-mdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..01f2b2e
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..48899e6
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..6d4a7c5
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/mipmap-xxxhdpi/ic_launcher.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-dimens.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-dimens.xml
new file mode 100644
index 0000000..22074a2
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-dimens.xml
@@ -0,0 +1,24 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Semantic definitions -->
+
+ <dimen name="horizontal_page_margin">@dimen/margin_huge</dimen>
+ <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-styles.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-styles.xml
new file mode 100644
index 0000000..03d1974
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-sw600dp/template-styles.xml
@@ -0,0 +1,25 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <style name="Widget.SampleMessage">
+ <item name="android:textAppearance">?android:textAppearanceLarge</item>
+ <item name="android:lineSpacingMultiplier">1.2</item>
+ <item name="android:shadowDy">-6.5</item>
+ </style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v11/template-styles.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v11/template-styles.xml
new file mode 100644
index 0000000..8c1ea66
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v11/template-styles.xml
@@ -0,0 +1,22 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Activity themes -->
+ <style name="Theme.Base" parent="android:Theme.Holo.Light" />
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-colors.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-colors.xml
new file mode 100644
index 0000000..b662ae2
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-colors.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-template-styles.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-template-styles.xml
new file mode 100644
index 0000000..d95b9b7
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values-v21/base-template-styles.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?><!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+
+ <!-- Activity themes -->
+ <style name="Theme.Base" parent="android:Theme.Material.Light"></style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/colors.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/colors.xml
new file mode 100644
index 0000000..801e292
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/colors.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+ <color name="drag_inactive">#ff888888</color>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/dimen.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/dimen.xml
new file mode 100644
index 0000000..1efd96e
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/dimen.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2016 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+ <dimen name="section_margin">16dp</dimen>
+
+ <dimen name="image_size">150dp</dimen>
+
+ <dimen name="text_size">0dp</dimen>
+ <dimen name="text_margin">10dp</dimen>
+ <dimen name="checkbox_margin">6dp</dimen>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/fragmentview_strings.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/fragmentview_strings.xml
new file mode 100755
index 0000000..7b9d9ec
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/fragmentview_strings.xml
@@ -0,0 +1,19 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<resources>
+ <string name="sample_show_log">Show Log</string>
+ <string name="sample_hide_log">Hide Log</string>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/strings.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/strings.xml
new file mode 100644
index 0000000..5fb290c
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/strings.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!--
+ Copyright 2015 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<resources>
+
+ <string name="image_target_prompt">Drop image here.\nThe app will request permission from the source app before displaying the image.</string>
+
+ <string name="intro_message">This sample demonstrates drag and drop functionality and is the \'target\' app for this sample. It shows how data can be received when dragged from another app.\nOpen the \'DragSource\' sample app next to this one and try dragging an image or text into the space below.</string>
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-dimens.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-dimens.xml
new file mode 100644
index 0000000..39e710b
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-dimens.xml
@@ -0,0 +1,32 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Define standard dimensions to comply with Holo-style grids and rhythm. -->
+
+ <dimen name="margin_tiny">4dp</dimen>
+ <dimen name="margin_small">8dp</dimen>
+ <dimen name="margin_medium">16dp</dimen>
+ <dimen name="margin_large">32dp</dimen>
+ <dimen name="margin_huge">64dp</dimen>
+
+ <!-- Semantic definitions -->
+
+ <dimen name="horizontal_page_margin">@dimen/margin_medium</dimen>
+ <dimen name="vertical_page_margin">@dimen/margin_medium</dimen>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-styles.xml b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-styles.xml
new file mode 100644
index 0000000..6e7d593
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/DropTarget/src/main/res/values/template-styles.xml
@@ -0,0 +1,42 @@
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ -->
+
+<resources>
+
+ <!-- Activity themes -->
+
+ <style name="Theme.Base" parent="android:Theme.Light" />
+
+ <style name="Theme.Sample" parent="Theme.Base" />
+
+ <style name="AppTheme" parent="Theme.Sample" />
+ <!-- Widget styling -->
+
+ <style name="Widget" />
+
+ <style name="Widget.SampleMessage">
+ <item name="android:textAppearance">?android:textAppearanceMedium</item>
+ <item name="android:lineSpacingMultiplier">1.1</item>
+ </style>
+
+ <style name="Widget.SampleMessageTile">
+ <item name="android:background">@drawable/tile</item>
+ <item name="android:shadowColor">#7F000000</item>
+ <item name="android:shadowDy">-3.5</item>
+ <item name="android:shadowRadius">2</item>
+ </style>
+
+</resources>
diff --git a/ui/window/DragAndDropAcrossApps/README.md b/ui/window/DragAndDropAcrossApps/README.md
new file mode 100644
index 0000000..bf5e418
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/README.md
@@ -0,0 +1,96 @@
+
+Android DragAndDropAcrossApps-new Sample
+===================================
+
+This sample demonstrates how data can be moved between views within an
+app or between different apps via drag and drop.
+This sample contains two separate Android applications, DragSource and
+DropTarget that show how data can be dragged and dropped between
+two separate apps.
+
+Introduction
+------------
+
+Android N introduces support for drag and drop between applications,
+augmenting the existing APIs that have enabled this within a single
+window before.
+
+To start a drag operation you need to call `View.startDragAndDrop`.
+Which gesture or action triggers this is up to you as an app developer.
+The API guide recommends doing this from
+`View.OnLongClickListener.onLongClick` and this seems to be the de-facto
+standard, but you are free to use other gestures (single tap, tap and drag
+etc).
+However, if you go for a unconventional drag start gesture, note that
+the framework implementation assumes that the pointer (touch or mouse)
+is down while the drag is starting, and the most recent touch/click
+position is used as the original position of the drag shadow.
+
+See also `android.support.v13.view.DragStartHelper` which uses different
+gestures for touch and mouse (click and drag works better for mouse
+than a long click).
+
+By default a drag and drop operation is constrained by the window
+containing the view that started the drag.
+To enable cross-window and cross-app drag and drop add
+`View.DRAG_FLAG_GLOBAL` to the flags passed to the `View.startDragAndDrop`
+call.
+
+If a Uri requiring permission grants is being sent, then the
+`android.view.View.DRAG_FLAG_GLOBAL_URI_READ` and/or the
+`android.view.View.DRAG_FLAG_GLOBAL_URI_WRITE` flags must be used also.
+To access content URIs requiring permissions on the receiving side, the target
+app needs to request the `android.view.DropPermissions` from the activity via
+`android.app.Activity.requestDropPermissions`. This permission will stay either
+until the activity is alive, or until the `release()` method is called on the
+`android.view.DropPermissions` object.
+
+Pre-requisites
+--------------
+
+- Android SDK vandroid-N
+- Android Build Tools v23.0.0
+- Android Support Repository
+
+Screenshots
+-------------
+
+<img src="screenshots/app.png" height="400" alt="Screenshot"/>
+
+Getting Started
+---------------
+
+This sample uses the Gradle build system. To build this project, use the
+"gradlew build" command or use "Import Project" in Android Studio.
+
+Support
+-------
+
+- Google+ Community: https://plus.google.com/communities/105153134372062985968
+- Stack Overflow: http://stackoverflow.com/questions/tagged/android
+
+If you've found an error in this sample, please file an issue:
+https://github.com/googlesamples/android-DragAndDropAcrossApps-new
+
+Patches are encouraged, and may be submitted by forking this project and
+submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
+
+License
+-------
+
+Copyright 2014 The Android Open Source Project, Inc.
+
+Licensed to the Apache Software Foundation (ASF) under one or more contributor
+license agreements. See the NOTICE file distributed with this work for
+additional information regarding copyright ownership. The ASF licenses this
+file to you under the Apache License, Version 2.0 (the "License"); you may not
+use this file except in compliance with the License. You may obtain a copy of
+the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+License for the specific language governing permissions and limitations under
+the License.
diff --git a/ui/window/DragAndDropAcrossApps/build.gradle b/ui/window/DragAndDropAcrossApps/build.gradle
new file mode 100644
index 0000000..e5fd788
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/build.gradle
@@ -0,0 +1,28 @@
+
+
+/*
+ * Copyright 2016, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// BEGIN_EXCLUDE
+import com.example.android.samples.build.SampleGenPlugin
+apply plugin: SampleGenPlugin
+
+samplegen {
+ pathToBuild "../../../../../build"
+ pathToSamplesCommon "../../../common"
+}
+apply from: "../../../../../build/build.gradle"
+// END_EXCLUDE
diff --git a/ui/window/DragAndDropAcrossApps/buildSrc/build.gradle b/ui/window/DragAndDropAcrossApps/buildSrc/build.gradle
new file mode 100644
index 0000000..5197a80
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/buildSrc/build.gradle
@@ -0,0 +1,32 @@
+
+/*
+ * Copyright 2016, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+repositories {
+ jcenter()
+}
+dependencies {
+ compile 'org.freemarker:freemarker:2.3.20'
+}
+
+sourceSets {
+ main {
+ groovy {
+ srcDir new File(rootDir, "../../../../../../build/buildSrc/src/main/groovy")
+ }
+ }
+}
+
diff --git a/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.jar b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..8c0fb64
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.jar
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..d27844f
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon May 02 14:15:55 AEST 2016
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
diff --git a/ui/window/DragAndDropAcrossApps/gradlew b/ui/window/DragAndDropAcrossApps/gradlew
new file mode 100755
index 0000000..91a7e26
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/gradlew
@@ -0,0 +1,164 @@
+#!/usr/bin/env bash
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn ( ) {
+ echo "$*"
+}
+
+die ( ) {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+esac
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched.
+if $cygwin ; then
+ [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+fi
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >&-
+APP_HOME="`pwd -P`"
+cd "$SAVED" >&-
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=$((i+1))
+ done
+ case $i in
+ (0) set -- ;;
+ (1) set -- "$args0" ;;
+ (2) set -- "$args0" "$args1" ;;
+ (3) set -- "$args0" "$args1" "$args2" ;;
+ (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
+function splitJvmOpts() {
+ JVM_OPTS=("$@")
+}
+eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
+JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+
+exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
diff --git a/ui/window/DragAndDropAcrossApps/gradlew.bat b/ui/window/DragAndDropAcrossApps/gradlew.bat
new file mode 100644
index 0000000..aec9973
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/gradlew.bat
@@ -0,0 +1,90 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windowz variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+if "%@eval[2+2]" == "4" goto 4NT_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+goto execute
+
+:4NT_args
+@rem Get arguments from the 4NT Shell from JP Software
+set CMD_LINE_ARGS=%$
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/ui/window/DragAndDropAcrossApps/screenshots/big_icon.png b/ui/window/DragAndDropAcrossApps/screenshots/big_icon.png
new file mode 100644
index 0000000..77f6e62
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/screenshots/big_icon.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/screenshots/phone.png b/ui/window/DragAndDropAcrossApps/screenshots/phone.png
new file mode 100644
index 0000000..37e0bfb
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/screenshots/phone.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/screenshots/tablet.png b/ui/window/DragAndDropAcrossApps/screenshots/tablet.png
new file mode 100644
index 0000000..5230f3a
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/screenshots/tablet.png
Binary files differ
diff --git a/ui/window/DragAndDropAcrossApps/settings.gradle b/ui/window/DragAndDropAcrossApps/settings.gradle
new file mode 100644
index 0000000..c670b21
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/settings.gradle
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+include ':DragSource', ':DropTarget'
diff --git a/ui/window/DragAndDropAcrossApps/template-params.xml b/ui/window/DragAndDropAcrossApps/template-params.xml
new file mode 100644
index 0000000..6b02e61
--- /dev/null
+++ b/ui/window/DragAndDropAcrossApps/template-params.xml
@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright 2013 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<sample>
+ <name>DragAndDropAcrossApps-new</name>
+ <group>ui</group>
+ <package>com.example.android.droptarget</package>
+
+ <minSdk>24</minSdk>
+
+ <template src="base-build" />
+
+ <strings>
+ <intro>
+<![CDATA[
+This sample demonstrates how data can be moved between views within an
+app or between different apps via drag and drop.
+This sample contains two separate Android applications: DragSource and
+DropTarget. DragSource contains images and text that can be dropped into the DropTarget
+app. Images are shared between the two apps through a URI for which the receiving app
+must request permission first, before it can be used.
+
+It also demonstrates the use of the DragStartHelper from the v13 support library to easily
+handle drag and drop events.
+]]>
+ </intro>
+ </strings>
+
+ <metadata>
+ <status>DRAFT</status>
+ <categories>Android N Preview</categories>
+ <technologies>Android</technologies>
+ <languages>Java</languages>
+ <solutions>Mobile</solutions>
+ <level>ADVANCED</level>
+ <icon>screenshots/big_icon.png</icon>
+ <screenshots>
+ <img>screenshots/phone.png</img>
+ <img>screenshots/tablet.png</img>
+ </screenshots>
+ <api_refs>
+ <android>android.content.ClipDescription</android>
+ <android>android.os.PersistableBundle</android>
+ <android>android.view.DragEvent</android>
+ <android>android.support.v13.view.DragAndDropPermissionsCompat</android>
+ <android>android.support.v13.view.DragStartHelper</android>
+ </api_refs>
+
+ <description>
+<![CDATA[
+This sample contains two separate Android applications: DragSource and
+DropTarget. DragSource contains images and text that can be dropped into the DropTarget
+app. Images are shared between the two apps through a URI for which the receiving app
+must request permission first, before it can be used.
+
+It also demonstrates the use of the DragStartHelper from the v13 support library to easily
+handle drag and drop events.
+]]>
+ </description>
+
+ <intro>
+<![CDATA[
+Android N introduces support for drag and drop between applications,
+augmenting the existing APIs that have enabled this within a single
+window before.
+
+To start a drag operation you need to call `View.startDragAndDrop`.
+Which gesture or action triggers this is up to you as an app developer.
+The API guide recommends doing this from
+`View.OnLongClickListener.onLongClick` and this seems to be the de-facto
+standard, but you are free to use other gestures (single tap, tap and drag
+etc).
+However, if you go for a unconventional drag start gesture, note that
+the framework implementation assumes that the pointer (touch or mouse)
+is down while the drag is starting, and the most recent touch/click
+position is used as the original position of the drag shadow.
+
+See also `android.support.v13.view.DragStartHelper` which uses different
+gestures for touch and mouse (click and drag works better for mouse
+than a long click).
+
+By default a drag and drop operation is constrained by the window
+containing the view that started the drag.
+To enable cross-window and cross-app drag and drop add
+`View.DRAG_FLAG_GLOBAL` to the flags passed to the `View.startDragAndDrop`
+call.
+
+If a Uri requiring permission grants is being sent, then the
+`android.view.View.DRAG_FLAG_GLOBAL_URI_READ` and/or the
+`android.view.View.DRAG_FLAG_GLOBAL_URI_WRITE` flags must be used also.
+To access content URIs requiring permissions on the receiving side, the target
+app needs to request the `android.view.DropPermissions` from the activity via
+`android.app.Activity.requestDropPermissions`. This permission will stay either
+until the activity is alive, or until the `release()` method is called on the
+`android.view.DropPermissions` object.
+]]>
+ </intro>
+ </metadata>
+</sample>
