Add new sample for 101 class on fragments.
The app has a fragment with a list that shows a couple phony
article names and a fragment that displays the phony articles.
They appear side by side on a large screen, but one at a time on smaller screens.
Change-Id: Ic78b772e1c8d1ddbfa6fa3fdb0b54a2363951063
diff --git a/samples/training/basic/FragmentBasics/AndroidManifest.xml b/samples/training/basic/FragmentBasics/AndroidManifest.xml
new file mode 100644
index 0000000..07b20d4
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/AndroidManifest.xml
@@ -0,0 +1,37 @@
+<!--
+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.
+-->
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.example.android.fragments"
+ android:versionCode="1"
+ android:versionName="1.0" >
+
+ <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="15" />
+
+ <application
+ android:icon="@drawable/ic_launcher"
+ android:label="@string/app_name" >
+ <activity
+ android:name=".MainActivity"
+ android:label="@string/app_name" >
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+
+</manifest>
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/libs/android-support-v4.jar b/samples/training/basic/FragmentBasics/libs/android-support-v4.jar
new file mode 100644
index 0000000..99e063b
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/libs/android-support-v4.jar
Binary files differ
diff --git a/samples/training/basic/FragmentBasics/project.properties b/samples/training/basic/FragmentBasics/project.properties
new file mode 100644
index 0000000..0840b4a
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/project.properties
@@ -0,0 +1,14 @@
+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file must be checked in Version Control Systems.
+#
+# To customize properties used by the Ant build system edit
+# "ant.properties", and override values to adapt the script to your
+# project structure.
+#
+# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
+#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt
+
+# Project target.
+target=android-15
diff --git a/samples/training/basic/FragmentBasics/res/drawable-hdpi/ic_launcher.png b/samples/training/basic/FragmentBasics/res/drawable-hdpi/ic_launcher.png
new file mode 100644
index 0000000..96a442e
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/drawable-hdpi/ic_launcher.png
Binary files differ
diff --git a/samples/training/basic/FragmentBasics/res/drawable-ldpi/ic_launcher.png b/samples/training/basic/FragmentBasics/res/drawable-ldpi/ic_launcher.png
new file mode 100644
index 0000000..9923872
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/drawable-ldpi/ic_launcher.png
Binary files differ
diff --git a/samples/training/basic/FragmentBasics/res/drawable-mdpi/ic_launcher.png b/samples/training/basic/FragmentBasics/res/drawable-mdpi/ic_launcher.png
new file mode 100644
index 0000000..359047d
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/drawable-mdpi/ic_launcher.png
Binary files differ
diff --git a/samples/training/basic/FragmentBasics/res/drawable-xhdpi/ic_launcher.png b/samples/training/basic/FragmentBasics/res/drawable-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..71c6d76
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/drawable-xhdpi/ic_launcher.png
Binary files differ
diff --git a/samples/training/basic/FragmentBasics/res/layout-large/news_articles.xml b/samples/training/basic/FragmentBasics/res/layout-large/news_articles.xml
new file mode 100644
index 0000000..9838147
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/layout-large/news_articles.xml
@@ -0,0 +1,34 @@
+<!--
+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.
+-->
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="horizontal"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent">
+
+ <fragment android:name="com.example.android.fragments.HeadlinesFragment"
+ android:id="@+id/headlines_fragment"
+ android:layout_weight="1"
+ android:layout_width="0dp"
+ android:layout_height="match_parent" />
+
+ <fragment android:name="com.example.android.fragments.ArticleFragment"
+ android:id="@+id/article_fragment"
+ android:layout_weight="2"
+ android:layout_width="0dp"
+ android:layout_height="match_parent" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/res/layout/article_view.xml b/samples/training/basic/FragmentBasics/res/layout/article_view.xml
new file mode 100644
index 0000000..b11280e
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/layout/article_view.xml
@@ -0,0 +1,22 @@
+<!--
+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.
+-->
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+ android:id="@+id/article"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:padding="16dp"
+ android:textSize="18sp" />
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/res/layout/news_articles.xml b/samples/training/basic/FragmentBasics/res/layout/news_articles.xml
new file mode 100644
index 0000000..e36c459
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/layout/news_articles.xml
@@ -0,0 +1,20 @@
+<!--
+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.
+-->
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:id="@+id/fragment_container"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent" />
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/res/values/strings.xml b/samples/training/basic/FragmentBasics/res/values/strings.xml
new file mode 100644
index 0000000..d8a2da8
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/res/values/strings.xml
@@ -0,0 +1,19 @@
+<!--
+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.
+-->
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+ <string name="app_name">Fragment Basics</string>
+</resources>
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/src/com/example/fragments/ArticleFragment.java b/samples/training/basic/FragmentBasics/src/com/example/fragments/ArticleFragment.java
new file mode 100644
index 0000000..1cb3a23
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/src/com/example/fragments/ArticleFragment.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.fragments;
+
+import android.support.v4.app.Fragment;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+public class ArticleFragment extends Fragment {
+ final static String ARG_POSITION = "position";
+ int mCurrentPosition = -1;
+
+ @Override
+ public View onCreateView(LayoutInflater inflater, ViewGroup container,
+ Bundle savedInstanceState) {
+
+ // If activity recreated (such as from screen rotate), restore
+ // the previous article selection set by onSaveInstanceState().
+ // This is primarily necessary when in the two-pane layout.
+ if (savedInstanceState != null) {
+ mCurrentPosition = savedInstanceState.getInt(ARG_POSITION);
+ }
+
+ // Inflate the layout for this fragment
+ return inflater.inflate(R.layout.article_view, container, false);
+ }
+
+ @Override
+ public void onStart() {
+ super.onStart();
+
+ // During startup, check if there are arguments passed to the fragment.
+ // onStart is a good place to do this because the layout has already been
+ // applied to the fragment at this point so we can safely call the method
+ // below that sets the article text.
+ Bundle args = getArguments();
+ if (args != null) {
+ // Set article based on argument passed in
+ updateArticleView(args.getInt(ARG_POSITION));
+ } else if (mCurrentPosition != -1) {
+ // Set article based on saved instance state defined during onCreateView
+ updateArticleView(mCurrentPosition);
+ }
+ }
+
+ public void updateArticleView(int position) {
+ TextView article = (TextView) getActivity().findViewById(R.id.article);
+ article.setText(Ipsum.Articles[position]);
+ mCurrentPosition = position;
+ }
+
+ @Override
+ public void onSaveInstanceState(Bundle outState) {
+ super.onSaveInstanceState(outState);
+
+ // Save the current article selection in case we need to recreate the fragment
+ outState.putInt(ARG_POSITION, mCurrentPosition);
+ }
+}
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/src/com/example/fragments/HeadlinesFragment.java b/samples/training/basic/FragmentBasics/src/com/example/fragments/HeadlinesFragment.java
new file mode 100644
index 0000000..9ec1d94
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/src/com/example/fragments/HeadlinesFragment.java
@@ -0,0 +1,79 @@
+/*
+ * 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.fragments;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.support.v4.app.ListFragment;
+import android.view.View;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+
+public class HeadlinesFragment extends ListFragment {
+ OnHeadlineSelectedListener mCallback;
+
+ // The container Activity must implement this interface so the frag can deliver messages
+ public interface OnHeadlineSelectedListener {
+ /** Called by HeadlinesFragment when a list item is selected */
+ public void onArticleSelected(int position);
+ }
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+
+ // We need to use a different list item layout for devices older than Honeycomb
+ int layout = Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB ?
+ android.R.layout.simple_list_item_activated_1 : android.R.layout.simple_list_item_1;
+
+ // Create an array adapter for the list view, using the Ipsum headlines array
+ setListAdapter(new ArrayAdapter<String>(getActivity(), layout, Ipsum.Headlines));
+ }
+
+ @Override
+ public void onStart() {
+ super.onStart();
+
+ // When in two-pane layout, set the listview to highlight the selected list item
+ // (We do this during onStart because at the point the listview is available.)
+ if (getFragmentManager().findFragmentById(R.id.article_fragment) != null) {
+ getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
+ }
+ }
+
+ @Override
+ public void onAttach(Activity activity) {
+ super.onAttach(activity);
+
+ // This makes sure that the container activity has implemented
+ // the callback interface. If not, it throws an exception.
+ try {
+ mCallback = (OnHeadlineSelectedListener) activity;
+ } catch (ClassCastException e) {
+ throw new ClassCastException(activity.toString()
+ + " must implement OnHeadlineSelectedListener");
+ }
+ }
+
+ @Override
+ public void onListItemClick(ListView l, View v, int position, long id) {
+ // Notify the parent activity of selected item
+ mCallback.onArticleSelected(position);
+
+ // Set the item as checked to be highlighted when in two-pane layout
+ getListView().setItemChecked(position, true);
+ }
+}
\ No newline at end of file
diff --git a/samples/training/basic/FragmentBasics/src/com/example/fragments/Ipsum.java b/samples/training/basic/FragmentBasics/src/com/example/fragments/Ipsum.java
new file mode 100644
index 0000000..74c1e46
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/src/com/example/fragments/Ipsum.java
@@ -0,0 +1,29 @@
+/*
+ * 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.fragments;
+
+public class Ipsum {
+
+ static String[] Headlines = {
+ "Article One",
+ "Article Two"
+ };
+
+ static String[] Articles = {
+ "Article One\n\nExcepteur pour-over occaecat squid biodiesel umami gastropub, nulla laborum salvia dreamcatcher fanny pack. Ullamco culpa retro ea, trust fund excepteur eiusmod direct trade banksy nisi lo-fi cray messenger bag. Nesciunt esse carles selvage put a bird on it gluten-free, wes anderson ut trust fund twee occupy viral. Laboris small batch scenester pork belly, leggings ut farm-to-table aliquip yr nostrud iphone viral next level. Craft beer dreamcatcher pinterest truffaut ethnic, authentic brunch. Esse single-origin coffee banksy do next level tempor. Velit synth dreamcatcher, magna shoreditch in american apparel messenger bag narwhal PBR ennui farm-to-table.",
+ "Article Two\n\nVinyl williamsburg non velit, master cleanse four loko banh mi. Enim kogi keytar trust fund pop-up portland gentrify. Non ea typewriter dolore deserunt Austin. Ad magna ethical kogi mixtape next level. Aliqua pork belly thundercats, ut pop-up tattooed dreamcatcher kogi accusamus photo booth irony portland. Semiotics brunch ut locavore irure, enim etsy laborum stumptown carles gentrify post-ironic cray. Butcher 3 wolf moon blog synth, vegan carles odd future."
+ };
+}
diff --git a/samples/training/basic/FragmentBasics/src/com/example/fragments/MainActivity.java b/samples/training/basic/FragmentBasics/src/com/example/fragments/MainActivity.java
new file mode 100644
index 0000000..fad1a03
--- /dev/null
+++ b/samples/training/basic/FragmentBasics/src/com/example/fragments/MainActivity.java
@@ -0,0 +1,87 @@
+/*
+ * 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.fragments;
+
+import android.os.Bundle;
+import android.support.v4.app.FragmentActivity;
+import android.support.v4.app.FragmentTransaction;
+
+public class MainActivity extends FragmentActivity
+ implements HeadlinesFragment.OnHeadlineSelectedListener {
+
+ /** Called when the activity is first created. */
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.news_articles);
+
+ // Check whether the activity is using the layout version with
+ // the fragment_container FrameLayout. If so, we must add the first fragment
+ if (findViewById(R.id.fragment_container) != null) {
+
+ // However, if we're being restored from a previous state,
+ // then we don't need to do anything and should return or else
+ // we could end up with overlapping fragments.
+ if (savedInstanceState != null) {
+ return;
+ }
+
+ // Create an instance of ExampleFragment
+ HeadlinesFragment firstFragment = new HeadlinesFragment();
+
+ // In case this activity was started with special instructions from an Intent,
+ // pass the Intent's extras to the fragment as arguments
+ firstFragment.setArguments(getIntent().getExtras());
+
+ // Add the fragment to the 'fragment_container' FrameLayout
+ getSupportFragmentManager().beginTransaction()
+ .add(R.id.fragment_container, firstFragment).commit();
+ }
+ }
+
+ public void onArticleSelected(int position) {
+ // The user selected the headline of an article from the HeadlinesFragment
+
+ // Capture the article fragment from the activity layout
+ ArticleFragment articleFrag = (ArticleFragment)
+ getSupportFragmentManager().findFragmentById(R.id.article_fragment);
+
+ if (articleFrag != null) {
+ // If article frag is available, we're in two-pane layout...
+
+ // Call a method in the ArticleFragment to update its content
+ articleFrag.updateArticleView(position);
+
+ } else {
+ // If the frag is not available, we're in the one-pane layout and must swap frags...
+
+ // Create fragment and give it an argument for the selected article
+ ArticleFragment newFragment = new ArticleFragment();
+ Bundle args = new Bundle();
+ args.putInt(ArticleFragment.ARG_POSITION, position);
+ newFragment.setArguments(args);
+ FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
+
+ // Replace whatever is in the fragment_container view with this fragment,
+ // and add the transaction to the back stack so the user can navigate back
+ transaction.replace(R.id.fragment_container, newFragment);
+ transaction.addToBackStack(null);
+
+ // Commit the transaction
+ transaction.commit();
+ }
+ }
+}
\ No newline at end of file
