遠程查看更新問題

Question

我正在從用戶處獲取數據並存儲到數據庫中。我的數據庫只有一個值。所以每次用戶進入數據庫時​​，數據庫都會被更新。我顯示在AppWidget.For的TextView的這些金銀幣我使用此代碼：

public void onUpdate(Context context, android.appwidget.AppWidgetManager appWidgetManager, int[] appWidgetIds) { 

    //Get all ids 
    ComponentName thisWidget = new ComponentName(context.getPackageName(),SmsSchedulerWidget.class.getName()); 

    int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget); 


    //the datas to be shown are fetched from the database 
    DatabaseManager dbManager = new DatabaseManager(context); 
    dbManager.open(); 
    contactNumber = dbManager.fetchContactNumber(); 
    Log.i("contactNumber",contactNumber); 
    date = dbManager.fetchDate(); 
    Log.i("date",date); 
    message = dbManager.fetchMessage(); 
    Log.i("message",message); 
    status = dbManager.fetchStatus(); 
    Log.i("status", status); 
    dbManager.closeDatabase(); 
    //Build the intent to call the service 

    //it creates the UI for the given app widget 
    RemoteViews remoteViews = new RemoteViews(context.getPackageName(),R.layout.schdulesms_appwidget_layout); 


    remoteViews.setTextViewText(R.id.to_appwidget_saved_data, 
      contactNumber); 
    remoteViews.setTextViewText(R.id.date_appwidget_saved_data, date); 
    remoteViews.setTextViewText(R.id.status_appwidget_saved, status); 
    remoteViews.setTextViewText(R.id.message_appwidgset_saved_data, 
      message); 

    //to start the activity with the click on the layout 
    Intent clickIntent = new Intent(context.getApplicationContext(),MainActivity.class); 
    clickIntent.setFlags(clickIntent.FLAG_ACTIVITY_NEW_TASK); 
    PendingIntent pendingIntent= PendingIntent.getActivity(context, 0, clickIntent, 0); 
    remoteViews.setOnClickPendingIntent(R.id.full_widget, pendingIntent); 

    //to update the BroadCast Receiver so that it holds the current values in the layout 
    Intent updateIntent =new Intent(context,SmsSchedulerWidget.class); 

    updateIntent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE); 
    updateIntent.setComponent(thisWidget); 

    PendingIntent pendingIntentForUpdate = PendingIntent.getBroadcast(context, 0, updateIntent, PendingIntent.FLAG_UPDATE_CURRENT); 
    remoteViews.setOnClickPendingIntent(R.id.logoBtn, pendingIntentForUpdate); 

    appWidgetManager.updateAppWidget(thisWidget, remoteViews); 

    } 

我的應用程序部件應該按一下按鈕後更新本身以及用戶輸入新的值到在運行數據庫但appwidget只會在appwidget從屏幕上卸載並重新安裝或程序重新運行後才更新。爲什麼會發生這種情況？點擊按鈕後如何更新我的應用程序小部件?????

Answer 1

要手動更新您的AppWidget，您必須發送它一個Broadcast並在您的AppWidgetProvider的onReceive()方法中接收它。從onReceive()中，您應該從廣播Intent中提取所需的所有值，然後手動調用onUpdate()方法。希望這可以幫助。