Automatic sources dropoff on 2020-06-10 18:32:38.095721
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Change-Id: I24cbf6ba6db262a1ae1445db1427a08fee35b3b4
diff --git a/android/appwidget/AppWidgetProvider.java b/android/appwidget/AppWidgetProvider.java
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+++ b/android/appwidget/AppWidgetProvider.java
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+/*
+ * Copyright (C) 2006 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 android.appwidget;
+
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+/**
+ * A convenience class to aid in implementing an AppWidget provider.
+ * Everything you can do with AppWidgetProvider, you can do with a regular {@link BroadcastReceiver}.
+ * AppWidgetProvider merely parses the relevant fields out of the Intent that is received in
+ * {@link #onReceive(Context,Intent) onReceive(Context,Intent)}, and calls hook methods
+ * with the received extras.
+ *
+ * <p>Extend this class and override one or more of the {@link #onUpdate}, {@link #onDeleted},
+ * {@link #onEnabled} or {@link #onDisabled} methods to implement your own AppWidget functionality.
+ * </p>
+ *
+ * <div class="special reference">
+ * <h3>Developer Guides</h3>
+ * <p>For more information about how to write an app widget provider, read the
+ * <a href="{@docRoot}guide/topics/appwidgets/index.html#AppWidgetProvider">App Widgets</a>
+ * developer guide.</p>
+ * </div>
+ */
+public class AppWidgetProvider extends BroadcastReceiver {
+ /**
+ * Constructor to initialize AppWidgetProvider.
+ */
+ public AppWidgetProvider() {
+ }
+
+ /**
+ * Implements {@link BroadcastReceiver#onReceive} to dispatch calls to the various
+ * other methods on AppWidgetProvider.
+ *
+ * @param context The Context in which the receiver is running.
+ * @param intent The Intent being received.
+ */
+ // BEGIN_INCLUDE(onReceive)
+ public void onReceive(Context context, Intent intent) {
+ // Protect against rogue update broadcasts (not really a security issue,
+ // just filter bad broacasts out so subclasses are less likely to crash).
+ String action = intent.getAction();
+ if (AppWidgetManager.ACTION_APPWIDGET_UPDATE.equals(action)) {
+ Bundle extras = intent.getExtras();
+ if (extras != null) {
+ int[] appWidgetIds = extras.getIntArray(AppWidgetManager.EXTRA_APPWIDGET_IDS);
+ if (appWidgetIds != null && appWidgetIds.length > 0) {
+ this.onUpdate(context, AppWidgetManager.getInstance(context), appWidgetIds);
+ }
+ }
+ } else if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) {
+ Bundle extras = intent.getExtras();
+ if (extras != null && extras.containsKey(AppWidgetManager.EXTRA_APPWIDGET_ID)) {
+ final int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID);
+ this.onDeleted(context, new int[] { appWidgetId });
+ }
+ } else if (AppWidgetManager.ACTION_APPWIDGET_OPTIONS_CHANGED.equals(action)) {
+ Bundle extras = intent.getExtras();
+ if (extras != null && extras.containsKey(AppWidgetManager.EXTRA_APPWIDGET_ID)
+ && extras.containsKey(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS)) {
+ int appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID);
+ Bundle widgetExtras = extras.getBundle(AppWidgetManager.EXTRA_APPWIDGET_OPTIONS);
+ this.onAppWidgetOptionsChanged(context, AppWidgetManager.getInstance(context),
+ appWidgetId, widgetExtras);
+ }
+ } else if (AppWidgetManager.ACTION_APPWIDGET_ENABLED.equals(action)) {
+ this.onEnabled(context);
+ } else if (AppWidgetManager.ACTION_APPWIDGET_DISABLED.equals(action)) {
+ this.onDisabled(context);
+ } else if (AppWidgetManager.ACTION_APPWIDGET_RESTORED.equals(action)) {
+ Bundle extras = intent.getExtras();
+ if (extras != null) {
+ int[] oldIds = extras.getIntArray(AppWidgetManager.EXTRA_APPWIDGET_OLD_IDS);
+ int[] newIds = extras.getIntArray(AppWidgetManager.EXTRA_APPWIDGET_IDS);
+ if (oldIds != null && oldIds.length > 0) {
+ this.onRestored(context, oldIds, newIds);
+ this.onUpdate(context, AppWidgetManager.getInstance(context), newIds);
+ }
+ }
+ }
+ }
+ // END_INCLUDE(onReceive)
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_UPDATE} and
+ * {@link AppWidgetManager#ACTION_APPWIDGET_RESTORED} broadcasts when this AppWidget
+ * provider is being asked to provide {@link android.widget.RemoteViews RemoteViews}
+ * for a set of AppWidgets. Override this method to implement your own AppWidget functionality.
+ *
+ * {@more}
+ *
+ * @param context The {@link android.content.Context Context} in which this receiver is
+ * running.
+ * @param appWidgetManager A {@link AppWidgetManager} object you can call {@link
+ * AppWidgetManager#updateAppWidget} on.
+ * @param appWidgetIds The appWidgetIds for which an update is needed. Note that this
+ * may be all of the AppWidget instances for this provider, or just
+ * a subset of them.
+ *
+ * @see AppWidgetManager#ACTION_APPWIDGET_UPDATE
+ */
+ public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+ }
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_OPTIONS_CHANGED}
+ * broadcast when this widget has been layed out at a new size.
+ *
+ * {@more}
+ *
+ * @param context The {@link android.content.Context Context} in which this receiver is
+ * running.
+ * @param appWidgetManager A {@link AppWidgetManager} object you can call {@link
+ * AppWidgetManager#updateAppWidget} on.
+ * @param appWidgetId The appWidgetId of the widget whose size changed.
+ * @param newOptions The appWidgetId of the widget whose size changed.
+ *
+ * @see AppWidgetManager#ACTION_APPWIDGET_OPTIONS_CHANGED
+ */
+ public void onAppWidgetOptionsChanged(Context context, AppWidgetManager appWidgetManager,
+ int appWidgetId, Bundle newOptions) {
+ }
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_DELETED} broadcast when
+ * one or more AppWidget instances have been deleted. Override this method to implement
+ * your own AppWidget functionality.
+ *
+ * {@more}
+ *
+ * @param context The {@link android.content.Context Context} in which this receiver is
+ * running.
+ * @param appWidgetIds The appWidgetIds that have been deleted from their host.
+ *
+ * @see AppWidgetManager#ACTION_APPWIDGET_DELETED
+ */
+ public void onDeleted(Context context, int[] appWidgetIds) {
+ }
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_ENABLED} broadcast when
+ * the a AppWidget for this provider is instantiated. Override this method to implement your
+ * own AppWidget functionality.
+ *
+ * {@more}
+ * When the last AppWidget for this provider is deleted,
+ * {@link AppWidgetManager#ACTION_APPWIDGET_DISABLED} is sent by the AppWidget manager, and
+ * {@link #onDisabled} is called. If after that, an AppWidget for this provider is created
+ * again, onEnabled() will be called again.
+ *
+ * @param context The {@link android.content.Context Context} in which this receiver is
+ * running.
+ *
+ * @see AppWidgetManager#ACTION_APPWIDGET_ENABLED
+ */
+ public void onEnabled(Context context) {
+ }
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_DISABLED} broadcast, which
+ * is sent when the last AppWidget instance for this provider is deleted. Override this method
+ * to implement your own AppWidget functionality.
+ *
+ * {@more}
+ *
+ * @param context The {@link android.content.Context Context} in which this receiver is
+ * running.
+ *
+ * @see AppWidgetManager#ACTION_APPWIDGET_DISABLED
+ */
+ public void onDisabled(Context context) {
+ }
+
+ /**
+ * Called in response to the {@link AppWidgetManager#ACTION_APPWIDGET_RESTORED} broadcast
+ * when instances of this AppWidget provider have been restored from backup. If your
+ * provider maintains any persistent data about its widget instances, override this method
+ * to remap the old AppWidgetIds to the new values and update any other app state that may
+ * be relevant.
+ *
+ * <p>This callback will be followed immediately by a call to {@link #onUpdate} so your
+ * provider can immediately generate new RemoteViews suitable for its newly-restored set
+ * of instances.
+ *
+ * <p>In addition, you should set {@link AppWidgetManager#OPTION_APPWIDGET_RESTORE_COMPLETED}
+ * to true indicate if a widget has been restored successfully from the provider's side.
+ *
+ * {@more}
+ *
+ * @param context
+ * @param oldWidgetIds
+ * @param newWidgetIds
+ */
+ public void onRestored(Context context, int[] oldWidgetIds, int[] newWidgetIds) {
+ }
+}
