Android One AppPredictionService final version. Used to provide simple prediction as top row of app drawer.
Test: tested on crosshatch
BUG: b/130048609
Change-Id: I5d8d905afe3819f2e6eca0ae5e1914cb3f0ac9a1
diff --git a/Android.bp b/Android.bp
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+++ b/Android.bp
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+// Copyright (C) 2019 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.
+
+java_defaults {
+ name: "apppredictionservice_defaults",
+
+ privileged: true,
+
+ certificate: "platform",
+
+ optimize: {
+ },
+
+ sdk_version: "system_current",
+}
+
+filegroup {
+ name: "AppPredictionService-srcs",
+ srcs: [
+ "src/**/*.java",
+ ],
+}
+
+android_app {
+ name: "AppPredictionService",
+
+ defaults: ["apppredictionservice_defaults"],
+
+ manifest: "AndroidManifest.xml",
+
+ srcs: [
+ ":AppPredictionService-srcs",
+ ],
+
+ resource_dirs: [
+ ],
+
+ required: ["privapp_whitelist_com.android.apppredictionservice"],
+}
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
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+++ b/AndroidManifest.xml
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+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ * Copyright (C) 2019 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.android.apppredictionservice">
+
+ <application>
+ <service
+ android:name=".PredictionService"
+ android:exported="true">
+ <intent-filter>
+ <!-- This constant must match AppPredictionService.SERVICE_INTERFACE -->
+ <action android:name="android.service.appprediction.AppPredictionService" />
+ </intent-filter>
+ </service>
+
+ </application>
+</manifest>
diff --git a/src/com/android/apppredictionservice/PredictionService.java b/src/com/android/apppredictionservice/PredictionService.java
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+/*
+ * Copyright (C) 2019 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.android.apppredictionservice;
+
+import static android.os.Process.myUserHandle;
+import static android.text.TextUtils.isEmpty;
+
+import static java.util.Collections.emptyList;
+
+import android.app.prediction.AppPredictionContext;
+import android.app.prediction.AppPredictionSessionId;
+import android.app.prediction.AppTarget;
+import android.app.prediction.AppTargetEvent;
+import android.app.prediction.AppTargetId;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.LauncherActivityInfo;
+import android.content.pm.LauncherApps;
+import android.content.pm.PackageManager;
+import android.content.pm.ResolveInfo;
+import android.os.CancellationSignal;
+import android.service.appprediction.AppPredictionService;
+import android.util.Log;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Consumer;
+
+/*
+ * New plugin that replaces prediction driven Aiai APK in P
+ * PredictionService simply populates the top row of the app
+ * drawer with the 5 most recently used apps. Each time a new
+ * app is launched, it is added to the left of the top row.
+ * Duplicates are not added.
+ */
+public class PredictionService extends AppPredictionService {
+
+ private static final String TAG = PredictionService.class.getSimpleName();
+
+ private final Set<AppPredictionSessionId> activeLauncherSessions = new HashSet<>();
+
+ private boolean mAppSuggestionsEnabled = true;
+
+ public static final String MY_PREF = "mypref";
+
+ private final List<AppTarget> predictionList = new ArrayList<>(5);
+
+ private final List<String> appNames = new ArrayList<>(5);
+ private final String[] appNameKeys = new String[] {
+ "first", "second", "third", "fourth", "fifth" };
+
+ SharedPreferences sharedPreferences;
+ SharedPreferences.Editor editor;
+
+ @Override
+ public void onCreate() {
+ super.onCreate();
+
+ Intent calendarIntent = new Intent(Intent.ACTION_MAIN);
+ calendarIntent.addCategory(Intent.CATEGORY_APP_CALENDAR);
+
+ Intent galleryIntent = new Intent(Intent.ACTION_MAIN);
+ galleryIntent.addCategory(Intent.CATEGORY_APP_GALLERY);
+
+ Intent mapsIntent = new Intent(Intent.ACTION_MAIN);
+ mapsIntent.addCategory(Intent.CATEGORY_APP_MAPS);
+
+ Intent emailIntent = new Intent(Intent.ACTION_MAIN);
+ emailIntent.addCategory(Intent.CATEGORY_APP_EMAIL);
+
+ Intent browserIntent = new Intent(Intent.ACTION_MAIN);
+ browserIntent.addCategory(Intent.CATEGORY_APP_BROWSER);
+
+ String[] DEFAULT_PACKAGES = new String[] {
+ getDefaultSystemHandlerActivityPackageName(calendarIntent),
+ getDefaultSystemHandlerActivityPackageName(galleryIntent),
+ getDefaultSystemHandlerActivityPackageName(mapsIntent),
+ getDefaultSystemHandlerActivityPackageName(emailIntent),
+ getDefaultSystemHandlerActivityPackageName(browserIntent),
+ };
+
+ Log.d(TAG, "AppPredictionService onCreate");
+ this.sharedPreferences = getSharedPreferences(MY_PREF, Context.MODE_PRIVATE);
+ this.editor = sharedPreferences.edit();
+
+ if (sharedPreferences.getString(appNameKeys[0], "").isEmpty()) {
+ // fill the list with defaults if first one is null when devices powers up for the first time
+ for (int i = 0; i < appNameKeys.length; i++) {
+ editor.putString(appNameKeys[i],
+ getLauncherComponent(DEFAULT_PACKAGES[i]).flattenToShortString());
+ }
+ this.editor.apply();
+ }
+
+ for (int i = 0; i < appNameKeys.length; i++) {
+ String appName = sharedPreferences.getString(appNameKeys[i], "");
+ ComponentName cn = ComponentName.unflattenFromString(appName);
+ AppTarget target = new AppTarget.Builder(
+ new AppTargetId(Integer.toString(i + 1)), cn.getPackageName(), myUserHandle())
+ .setClassName(cn.getClassName())
+ .build();
+ appNames.add(appName);
+ predictionList.add(target);
+ }
+ postPredictionUpdateToAllClients();
+ }
+
+ private ComponentName getLauncherComponent(String packageName) {
+ List<LauncherActivityInfo> infos = getSystemService(LauncherApps.class)
+ .getActivityList(packageName, myUserHandle());
+ if (infos.isEmpty()) {
+ return new ComponentName(packageName, "#");
+ } else {
+ return infos.get(0).getComponentName();
+ }
+ }
+
+ private void postPredictionUpdate(AppPredictionSessionId sessionId) {
+ updatePredictions(sessionId, mAppSuggestionsEnabled ? predictionList : emptyList());
+ }
+
+ private void postPredictionUpdateToAllClients() {
+ for (AppPredictionSessionId session : activeLauncherSessions) {
+ postPredictionUpdate(session);
+ }
+ }
+
+ @Override
+ public void onCreatePredictionSession(
+ AppPredictionContext context, AppPredictionSessionId sessionId) {
+ Log.d(TAG, "onCreatePredictionSession");
+
+ if (context.getUiSurface().equals("home") || context.getUiSurface().equals("overview")) {
+ activeLauncherSessions.add(sessionId);
+ postPredictionUpdate(sessionId);
+ }
+ }
+
+ @Override
+ public void onAppTargetEvent(AppPredictionSessionId sessionId, AppTargetEvent event) {
+
+ if (!activeLauncherSessions.contains(sessionId)) {
+ return;
+ }
+
+ boolean found = false;
+ Log.d(TAG, "onAppTargetEvent");
+
+ AppTarget target = event.getTarget();
+ if (target == null || isEmpty(target.getPackageName()) || isEmpty(target.getClassName())) {
+ return;
+ }
+ String mostRecentComponent = new ComponentName(
+ target.getPackageName(), target.getClassName()).flattenToString();
+
+ // Check if packageName already exists in existing list of appNames
+ for (String packageName:appNames) {
+ if (packageName.contains(target.getPackageName())) {
+ found = true;
+ break;
+ }
+ }
+
+ if (!found) {
+ appNames.remove(appNames.size() - 1);
+ appNames.add(0, mostRecentComponent);
+
+ for (int i = 0; i < appNameKeys.length; i++) {
+ editor.putString(appNameKeys[i], appNames.get(i));
+ }
+ editor.apply();
+
+ predictionList.remove(predictionList.size() - 1);
+ predictionList.add(0, event.getTarget());
+
+ Log.d(TAG, "onAppTargetEvent:: update predictions");
+ postPredictionUpdateToAllClients();
+ }
+ }
+
+ @Override
+ public void onLaunchLocationShown(
+ AppPredictionSessionId sessionId, String launchLocation, List<AppTargetId> targetIds) {
+ Log.d(TAG, "onLaunchLocationShown");
+ }
+
+ @Override
+ public void onSortAppTargets(
+ AppPredictionSessionId sessionId,
+ List<AppTarget> targets,
+ CancellationSignal cancellationSignal,
+ Consumer<List<AppTarget>> callback) {
+
+ Log.d(TAG, "onSortAppTargets");
+ if (!activeLauncherSessions.contains(sessionId)) {
+ callback.accept(emptyList());
+ } else {
+ // No-op
+ callback.accept(targets);
+ }
+ }
+
+ @Override
+ public void onRequestPredictionUpdate(AppPredictionSessionId sessionId) {
+ Log.d(TAG, "onRequestPredictionUpdate");
+
+ if (!activeLauncherSessions.contains(sessionId)) {
+ updatePredictions(sessionId, emptyList());
+ } else {
+ postPredictionUpdate(sessionId);
+ Log.d(TAG, "update predictions");
+ }
+ }
+
+ @Override
+ public void onDestroyPredictionSession(AppPredictionSessionId sessionId) {
+ Log.d(TAG, "onDestroyPredictionSession");
+ activeLauncherSessions.remove(sessionId);
+ }
+
+ @Override
+ public void onStartPredictionUpdates() {
+ Log.d(TAG, "onStartPredictionUpdates");
+ }
+
+ @Override
+ public void onStopPredictionUpdates() {
+ Log.d(TAG, "onStopPredictionUpdates");
+ }
+
+ public void setAppSuggestionsEnabled(boolean enabled) {
+ mAppSuggestionsEnabled = enabled;
+ postPredictionUpdateToAllClients();
+ }
+
+ private String getDefaultSystemHandlerActivityPackageName(Intent intent) {
+ return getDefaultSystemHandlerActivityPackageName(intent, 0);
+ }
+
+ private String getDefaultSystemHandlerActivityPackageName(Intent intent, int flags) {
+ ResolveInfo handler = getPackageManager().resolveActivity(intent, flags | PackageManager.MATCH_SYSTEM_ONLY);
+ if (handler == null) {
+ return null;
+ }
+ if ((handler.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0) {
+ return handler.activityInfo.packageName;
+ }
+ return null;
+ }
+}
