1 package com.android.launcher3; 2 3 import android.appwidget.AppWidgetHost; 4 import android.appwidget.AppWidgetManager; 5 import android.appwidget.AppWidgetProviderInfo; 6 import android.content.BroadcastReceiver; 7 import android.content.ContentResolver; 8 import android.content.ContentValues; 9 import android.content.Context; 10 import android.content.Intent; 11 import android.database.Cursor; 12 import android.os.AsyncTask; 13 import android.util.Log; 14 15 import com.android.launcher3.LauncherSettings.Favorites; 16 17 import java.util.ArrayList; 18 import java.util.List; 19 20 public class AppWidgetsRestoredReceiver extends BroadcastReceiver { 21 22 private static final String TAG = "AppWidgetsRestoredReceiver"; 23 24 @Override 25 public void onReceive(Context context, Intent intent) { 26 if (AppWidgetManager.ACTION_APPWIDGET_HOST_RESTORED.equals(intent.getAction())) { 27 int[] oldIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_OLD_IDS); 28 int[] newIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS); 29 if (oldIds.length == newIds.length) { 30 restoreAppWidgetIds(context, oldIds, newIds); 31 } else { 32 Log.e(TAG, "Invalid host restored received"); 33 } 34 } 35 } 36 37 /** 38 * Updates the app widgets whose id has changed during the restore process. 39 */ 40 static void restoreAppWidgetIds(Context context, int[] oldWidgetIds, int[] newWidgetIds) { 41 final ContentResolver cr = context.getContentResolver(); 42 final List<Integer> idsToRemove = new ArrayList<Integer>(); 43 final AppWidgetManager widgets = AppWidgetManager.getInstance(context); 44 45 for (int i = 0; i < oldWidgetIds.length; i++) { 46 Log.i(TAG, "Widget state restore id " + oldWidgetIds[i] + " => " + newWidgetIds[i]); 47 48 final AppWidgetProviderInfo provider = widgets.getAppWidgetInfo(newWidgetIds[i]); 49 final int state; 50 if (LauncherModel.isValidProvider(provider)) { 51 state = LauncherAppWidgetInfo.RESTORE_COMPLETED; 52 } else { 53 state = LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY; 54 } 55 56 ContentValues values = new ContentValues(); 57 values.put(LauncherSettings.Favorites.APPWIDGET_ID, newWidgetIds[i]); 58 values.put(LauncherSettings.Favorites.RESTORED, state); 59 60 String[] widgetIdParams = new String[] { Integer.toString(oldWidgetIds[i]) }; 61 62 int result = cr.update(Favorites.CONTENT_URI, values, 63 "appWidgetId=? and (restored & 1) = 1", widgetIdParams); 64 if (result == 0) { 65 Cursor cursor = cr.query(Favorites.CONTENT_URI, 66 new String[] {Favorites.APPWIDGET_ID}, 67 "appWidgetId=?", widgetIdParams, null); 68 try { 69 if (!cursor.moveToFirst()) { 70 // The widget no long exists. 71 idsToRemove.add(newWidgetIds[i]); 72 } 73 } finally { 74 cursor.close(); 75 } 76 } 77 } 78 // Unregister the widget IDs which are not present on the workspace. This could happen 79 // when a widget place holder is removed from workspace, before this method is called. 80 if (!idsToRemove.isEmpty()) { 81 final AppWidgetHost appWidgetHost = 82 new AppWidgetHost(context, Launcher.APPWIDGET_HOST_ID); 83 new AsyncTask<Void, Void, Void>() { 84 public Void doInBackground(Void ... args) { 85 for (Integer id : idsToRemove) { 86 appWidgetHost.deleteAppWidgetId(id); 87 Log.e(TAG, "Widget no longer present, appWidgetId=" + id); 88 } 89 return null; 90 } 91 }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null); 92 } 93 94 LauncherAppState app = LauncherAppState.getInstanceNoCreate(); 95 if (app != null) { 96 app.reloadWorkspace(); 97 } 98 } 99 } 100
