Android：報警更新更多部件

Question

我使用AlarmManager每秒更新一個部件，但是當添加更多部件時，只有最後一個部件被更新。我不understend爲什麼...

這是代碼...

public class widget extends AppWidgetProvider { 

    @Override 
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) { 
     SharedPreferences preference = context.getSharedPreferences("MY_PREFERENCE", Context.MODE_PRIVATE); 
     Intent intent = new Intent(context,vampireServiceWidget.class); 
     context.startService(intent); 
     for(int i=0; i<appWidgetIds.length;i++){   
      if(preference.getLong("countdown", 0)!=0){ 
       //Parte il countdown 
       Intent in = new Intent().setAction("it.android.dev.thevampirediaries.UPDATE_COUNTDOWN"); 
       in.putExtra("id_widget", appWidgetIds[i]); 
       in.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
       PendingIntent pi = PendingIntent.getBroadcast(context, 0, in, PendingIntent.FLAG_UPDATE_CURRENT); 
       AlarmManager alarm = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 
       alarm.setRepeating(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), 1000, pi); 

        }  } 

} 

到廣播這種代碼

AppWidgetManager manager = AppWidgetManager.getInstance(context); 
      RemoteViews remoteView = new RemoteViews(context.getPackageName(),R.layout.widgett); 
     thisWidget=intent.getIntExtra("id_widget", 0) 
      SimpleTimeFormat tf = new SimpleTimeFormat("$dd$ : $HH$: $mm$: $ss$");  
      String risultato = tf.format(countdown_data_fine - new Date().getTime()); // arg0 tempo 
      remoteView.setTextViewText(R.id.textView1, titolo_puntata); 
      remoteView.setTextViewText(R.id.textView2, risultato); 
      manager.updateAppWidget(thisWidget, remoteView); 

Answer 1

註釋掉的循環，不發送部件IDS。使用public void updateAppWidget (ComponentName provider, RemoteViews views) to update the widget。

試試這個

public class widget extends AppWidgetProvider { 

    @Override 
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) { 
     SharedPreferences preference = context.getSharedPreferences("MY_PREFERENCE", Context.MODE_PRIVATE); 
     Intent intent = new Intent(context,vampireServiceWidget.class); 
     context.startService(intent); 
     //for(int i=0; i<appWidgetIds.length;i++){   
      if(preference.getLong("countdown", 0)!=0){ 
       //Parte il countdown 
       Intent in = new Intent().setAction("it.android.dev.thevampirediaries.UPDATE_COUNTDOWN"); 
       in.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
       PendingIntent pi = PendingIntent.getBroadcast(context, 0, in, PendingIntent.FLAG_UPDATE_CURRENT); 
       AlarmManager alarm = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE); 
       alarm.setRepeating(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime(), 1000, pi); 

      }  
     } 

//}

============================== ==================

AppWidgetManager manager = AppWidgetManager.getInstance(context); 
       RemoteViews remoteView = new RemoteViews(context.getPackageName(),R.layout.widgett); 
ComponentName thisWidget = new ComponentName(context, widget.class); 
    SimpleTimeFormat tf = new SimpleTimeFormat("$dd$ : $HH$: $mm$: $ss$");  
       String risultato = tf.format(countdown_data_fine - new Date().getTime()); 
       remoteView.setTextViewText(R.id.textView1, titolo_puntata); 
       remoteView.setTextViewText(R.id.textView2, risultato); 
       manager.updateAppWidget(thisWidget, remoteView);