Android Widget按鈕

Question

與this教程我已經創建了一個帶按鈕的小部件。在下面的代碼中，當我點擊ButtonP1時，看到一個祝酒信息。我也嘗試使用ButtonP2來做同樣的事情，但是隻有一個祝酒消息被設置爲ButtonP1。我怎麼做，當用戶點擊ButtonP2時，另一個吐司味精出現？

public class HelloWidget extends AppWidgetProvider { 

    public static String ACTION_WIDGET_CONFIGURE = "ConfigureWidget"; 
    public static String ACTION_WIDGET_RECEIVER = "ActionReceiverWidget"; 

    @Override 
    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { 
     context.startService(new Intent(context, UpdateService.class)); 

     RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widgetmain); 

     Intent active = new Intent(context, HelloWidget.class); 
     active.setAction(ACTION_WIDGET_RECEIVER); 
     active.putExtra("msg", "Message for Button P1"); 

     PendingIntent actionPendingIntent = PendingIntent.getBroadcast(context, 0, active, 0); 
     remoteViews.setOnClickPendingIntent(R.id.ButtonP1, actionPendingIntent); 

     Intent active2 = new Intent(context, HelloWidget.class); 
     active2.setAction(ACTION_WIDGET_RECEIVER); 
     active2.putExtra("msg", "Message for Button P2"); 

     PendingIntent actionPendingIntent2 = PendingIntent.getBroadcast(context, 0, active2, 0); 
     remoteViews.setOnClickPendingIntent(R.id.ButtonP2, actionPendingIntent2); 

     appWidgetManager.updateAppWidget(appWidgetIds, remoteViews); 
    } 

@Override 
public void onReceive(Context context, Intent intent) { 

    final String action = intent.getAction(); 
    if (AppWidgetManager.ACTION_APPWIDGET_DELETED.equals(action)) 
    { 
     final int appWidgetId = intent.getExtras().getInt(
       AppWidgetManager.EXTRA_APPWIDGET_ID,AppWidgetManager.INVALID_APPWIDGET_ID); 
     if (appWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) 
     { 
      this.onDeleted(context, new int[] { appWidgetId }); 
     } 
    } 
    else 
    { 
     if (intent.getAction().equals(ACTION_WIDGET_RECEIVER)) 
     { 
      String msg = "null"; 
      try { 
       msg = intent.getStringExtra("msg"); 
       } catch (NullPointerException e) { 
       Log.e("Error", "msg = null"); 
       } 
       Toast.makeText(context, "Out: " + msg, Toast.LENGTH_SHORT).show(); 
     } 
     super.onReceive(context, intent); 
    } 
} 
} 

我曾經嘗試這樣做（ACTION_WIDGET_RECEIVER2而不是ACTION_WIDGET_RECEIVER）

Intent active2 = new Intent(context, HelloWidget.class); 
    active2.setAction(ACTION_WIDGET_RECEIVER2); 
    active2.putExtra("msg", "Message for Button P2"); 

    PendingIntent actionPendingIntent2 = PendingIntent.getBroadcast(context, 0, active2, 0); 
    remoteViews.setOnClickPendingIntent(R.id.ButtonP2, actionPendingIntent2); 

與

if (intent.getAction().equals(ACTION_WIDGET_RECEIVER2)) 
       { 
        String msg2 = "null"; 
        try { 
         msg2 = intent.getStringExtra("msg2"); 
         } catch (NullPointerException e) { 
         Log.e("Error", "msg = null"); 
         } 
         Toast.makeText(context, "Out2: " + msg2, Toast.LENGTH_SHORT).show(); //null 
       } 

後相同的，如果行

。在這種情況下，msg2變量爲空。

Answer 1

檢索將執行廣播的PendingIntent時，您將不得不使用不同的請求代碼。如果不是PendingIntent.getBroadcast(..)將返回您的案例中現有的一個，並帶有來自您的第一個Intent的消息。

private static final int REQUEST_CODE_ONE = 10; 
private static final int REQUEST_CODE_TWO = 20; 

.... 

@Override 
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { 
    .... 
    PendingIntent actionPendingIntent = PendingIntent.getBroadcast(context, REQUEST_CODE_ONE, active, 0); 
    .... 

    PendingIntent actionPendingIntent2 = PendingIntent.getBroadcast(context, REQUEST_CODE_TWO, active2, 0); 
    .... 
}