Android小部件更新不起作用

此代碼的工作總是

Toast.makeText(context, ""+cd.getId(), Toast.LENGTH_LONG).show();

但幽冥代碼只有當它是調試工作。

@Override 
public void onUpdate(Context context, AppWidgetManager appwidgetmanager, 
     int[] appWidgetIds) { 

    for (int i : appWidgetIds) { 
     RemoteViews views = new RemoteViews(context.getPackageName(), 
       R.layout.widget4x4persian); 
     shaffle(context, appwidgetmanager, i, views); 
    } 

} 

@Override 
public void onReceive(Context context, Intent intent) { 
    this.context = context; 
    super.onReceive(context, intent); 
    ComponentName thisWidget = new ComponentName(context, gift4x4.class); 
    RemoteViews remoteViews = new RemoteViews(context.getPackageName(), 
      R.layout.widget4x4persian); 
    AppWidgetManager appWidgetManager = AppWidgetManager 
      .getInstance(context); 
    appWidgetManager.updateAppWidget(thisWidget, remoteViews); 
    clickWidget(context, appWidgetManager, intent, remoteViews); 
} 

private void clickWidget(Context context, 
     AppWidgetManager appWidgetManager, Intent intent, 
     RemoteViews remoteViews) { 

    Cursor c = null; 
    try { 

     ComponentName thisWidget = new ComponentName(context, gift4x4.class); 

     Bundle b = intent.getExtras(); 

     if (b != null) { 
      int key = b.getInt(WIDGET_KEY); 

      String id = null; 

       int[] allWidgetIds = appWidgetManager 
         .getAppWidgetIds(thisWidget); 
       for (int i : allWidgetIds) { 
        RemoteViews views = new RemoteViews(
          context.getPackageName(), 
          R.layout.widget4x4persian); 
        shaffle(context, appWidgetManager, i, remoteViews); 
       } 
      } 

    } catch (NumberFormatException e) { 
     e.getMessage(); 
    } finally { 
     if (c != null) 
      c.close(); 
    } 
} 

public void shaffle(Context context, AppWidgetManager appwidgetmanager, 
     int appWidgetId, RemoteViews Rview) { 
    Cursor c = null; 
    try { 

     Card cd = null; 
     do { 
      PreferenceManager pm = new PreferenceManager(context); 
      Cards_Count = pm.get(PREFNAME_CARDS_COUNTS, CARDS_COUNTS); 
      int shaffle = (new Random()).nextInt(Cards_Count); 

      c = context.getContentResolver().query(CONTENT_URI_CARDS, 
        new String[] { ID, TEXT, ISREAD, ISBOOKMARK, NOTE }, 
        "id=" + shaffle, null, null); 
      if (c.moveToFirst()) { 
       cd = new Card(c.getInt(c.getColumnIndex(ID)), c.getString(c 
         .getColumnIndex(TEXT)), c.getInt(c 
         .getColumnIndex(ISREAD)), c.getInt(c 
         .getColumnIndex(ISBOOKMARK)), c.getString(c 
         .getColumnIndex(NOTE))); 
      } 
      c.close(); 
     } while (c == null); 

     Rview.setImageViewResource(R.id.imgIsBookmarkWidget, cd 
       .getIsBookmark() == 1 ? R.drawable.bookmark 
       : R.drawable.unbookmark); 

     Bitmap bmp = getPicture(context, cd.getId()); 
        Toast.makeText(context, ""+cd.getId(), Toast.LENGTH_LONG).show(); 
     Rview.setImageViewBitmap(R.id.imgWidget, bmp); 
     Intent intentTemp = new Intent(context, gift4x4.class); 
     intentTemp.putExtra(WIDGET_KEY, key); 

     PendingIntent pendingintentTemp = PendingIntent.getBroadcast(context, key, 
       intentTemp, PendingIntent.FLAG_UPDATE_CURRENT); 

     Rview.setOnClickPendingIntent(R.id.imgShaffleWidget, 
       getProperIntent(context, 3, cd)); 


     appwidgetmanager.updateAppWidget(appWidgetId, Rview); 

    } catch (Exception e) { 
     e.getMessage(); 
    } finally { 
     if (c != null) 
      c.close(); 
    } 
}

來源

2012-12-12 Ahmad Aghazadeh

調試和/或單元測試，似乎有一些bug（而C == NULL） – Snicolas

不工作.Tost顯示其它ID爲每次點擊imgShaffleWidget。 –

也許您正在使用的上下文不是正確的類型。只需使用傳入函數的上下文，不要使用在類中聲明的私有上下文。你得洗法

public void onReceive(Context context, Intent intent)

來源

2012-12-17 13:02:00

Android小部件更新不起作用

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