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.Context; 9 import android.content.Intent; 10 import android.database.Cursor; 11 import android.os.Handler; 12 import android.support.annotation.WorkerThread; 13 import android.util.Log; 14 15 import com.android.launcher3.LauncherSettings.Favorites; 16 import com.android.launcher3.config.FeatureFlags; 17 import com.android.launcher3.model.LoaderTask; 18 import com.android.launcher3.provider.RestoreDbTask; 19 import com.android.launcher3.util.ContentWriter; 20 21 public class AppWidgetsRestoredReceiver extends BroadcastReceiver { 22 23 private static final String TAG = "AWRestoredReceiver"; 24 25 @Override onReceive(final Context context, Intent intent)26 public void onReceive(final Context context, Intent intent) { 27 if (AppWidgetManager.ACTION_APPWIDGET_HOST_RESTORED.equals(intent.getAction())) { 28 int hostId = intent.getIntExtra(AppWidgetManager.EXTRA_HOST_ID, 0); 29 Log.d(TAG, "Widget ID map received for host:" + hostId); 30 if (hostId != LauncherAppWidgetHost.APPWIDGET_HOST_ID) { 31 return; 32 } 33 34 final int[] oldIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_OLD_IDS); 35 final int[] newIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS); 36 if (oldIds.length == newIds.length) { 37 final PendingResult asyncResult = goAsync(); 38 new Handler(LauncherModel.getWorkerLooper()) 39 .postAtFrontOfQueue(new Runnable() { 40 @Override 41 public void run() { 42 restoreAppWidgetIds(context, oldIds, newIds); 43 asyncResult.finish(); 44 } 45 }); 46 } else { 47 Log.e(TAG, "Invalid host restored received"); 48 } 49 } 50 } 51 52 /** 53 * Updates the app widgets whose id has changed during the restore process. 54 */ 55 @WorkerThread restoreAppWidgetIds(Context context, int[] oldWidgetIds, int[] newWidgetIds)56 static void restoreAppWidgetIds(Context context, int[] oldWidgetIds, int[] newWidgetIds) { 57 AppWidgetHost appWidgetHost = new LauncherAppWidgetHost(context); 58 if (FeatureFlags.GO_DISABLE_WIDGETS) { 59 Log.e(TAG, "Skipping widget ID remap as widgets not supported"); 60 appWidgetHost.deleteHost(); 61 return; 62 } 63 if (!RestoreDbTask.isPending(context)) { 64 // Someone has already gone through our DB once, probably LoaderTask. Skip any further 65 // modifications of the DB. 66 Log.e(TAG, "Skipping widget ID remap as DB already in use"); 67 for (int widgetId : newWidgetIds) { 68 Log.d(TAG, "Deleting widgetId: " + widgetId); 69 appWidgetHost.deleteAppWidgetId(widgetId); 70 } 71 return; 72 } 73 final ContentResolver cr = context.getContentResolver(); 74 final AppWidgetManager widgets = AppWidgetManager.getInstance(context); 75 76 for (int i = 0; i < oldWidgetIds.length; i++) { 77 Log.i(TAG, "Widget state restore id " + oldWidgetIds[i] + " => " + newWidgetIds[i]); 78 79 final AppWidgetProviderInfo provider = widgets.getAppWidgetInfo(newWidgetIds[i]); 80 final int state; 81 if (LoaderTask.isValidProvider(provider)) { 82 // This will ensure that we show 'Click to setup' UI if required. 83 state = LauncherAppWidgetInfo.FLAG_UI_NOT_READY; 84 } else { 85 state = LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY; 86 } 87 88 String[] widgetIdParams = new String[] { Integer.toString(oldWidgetIds[i]) }; 89 int result = new ContentWriter(context, new ContentWriter.CommitParams( 90 "appWidgetId=? and (restored & 1) = 1", widgetIdParams)) 91 .put(LauncherSettings.Favorites.APPWIDGET_ID, newWidgetIds[i]) 92 .put(LauncherSettings.Favorites.RESTORED, state) 93 .commit(); 94 95 if (result == 0) { 96 Cursor cursor = cr.query(Favorites.CONTENT_URI, 97 new String[] {Favorites.APPWIDGET_ID}, 98 "appWidgetId=?", widgetIdParams, null); 99 try { 100 if (!cursor.moveToFirst()) { 101 // The widget no long exists. 102 appWidgetHost.deleteAppWidgetId(newWidgetIds[i]); 103 } 104 } finally { 105 cursor.close(); 106 } 107 } 108 } 109 110 LauncherAppState app = LauncherAppState.getInstanceNoCreate(); 111 if (app != null) { 112 app.getModel().forceReload(); 113 } 114 } 115 } 116