僅在時間流逝時發送意圖onUpdate

我仍然處於學習使用Java進行Android編程的第一步。所以我的問題可能對一些更有經驗的程序員來說是顯而易見的，但我無法找到任何有用的或特定的示例。僅在時間流逝時發送意圖onUpdate

無論如何，我有一個小部件。我想在我的onUpdate被調用時發送通知，因爲android：updatePeriodMillis已經發生。我知道如何使用setOnClickPendingIntent單擊按鈕時獲得通知。但我只是在計時器用完時才知道如何去做。

我的一些代碼：

@Override 
     public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { 
     Toast.makeText(context, "onUpdate", Toast.LENGTH_SHORT).show(); 
     RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.activity_app_widget); 
     Intent configIntent = new Intent(context, FrontPage.class); 
     configIntent.setAction(ACTION_WIDGET_CONFIGURE); 
     Intent active = new Intent(context, AppWidget.class); 
     active.setAction(ACTION_WIDGET_RECEIVER); 
     active.putExtra("msg", "Message for Button 1"); 

     Intent activeButtonTwo = new Intent(context, AppWidget.class); 
     activeButtonTwo.setAction(ACTION_WIDGET_RECEIVER2); 
     activeButtonTwo.putExtra("msg", "Message for Button 2"); 

     Intent updateNotification = new Intent (context, AppWidget.class); 
     updateNotification.setAction(ACTION_UPDATE); 

     PendingIntent actionPendingIntent = PendingIntent.getBroadcast(context, 0, active, 0); 
     PendingIntent actionPendingIntent2 = PendingIntent.getBroadcast(context, 0, activeButtonTwo, 0); 
     PendingIntent configPendingIntent = PendingIntent.getActivity(context, 0, configIntent, 0); 

     remoteViews.setOnClickPendingIntent(R.id.buttonPrevious, actionPendingIntent); 
     remoteViews.setOnClickPendingIntent(R.id.buttonNext, actionPendingIntent2); 
     remoteViews.setOnClickPendingIntent(R.id.buttonGoToApp, configPendingIntent); 





     appWidgetManager.updateAppWidget(appWidgetIds, remoteViews); 

    }

這裏是我的onReceive（）：

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

      // v1.5 fix that doesn't call onDelete Action 
        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 { 
         // check, if our Action was called 
         if (intent.getAction().equals(ACTION_WIDGET_RECEIVER) || intent.getAction().equals(ACTION_WIDGET_RECEIVER2)) { 
          String msg = "null"; 
          try { 
           msg = intent.getStringExtra("msg"); 
          } catch (NullPointerException e) { 
           Log.e("Error", "msg = null"); 
          } 
          Toast.makeText(context, msg, Toast.LENGTH_SHORT).show(); 

          PendingIntent contentIntent = PendingIntent.getActivity(context, 0, intent, 0); 
          NotificationManager notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE); 
          Notification noty; 
          if(intent.getAction().equals(ACTION_WIDGET_RECEIVER)){ 
           noty = new Notification(R.drawable.ic_launcher, "Button 1 clicked", System.currentTimeMillis()); 
          } 
          else 
          { 
           noty = new Notification(R.drawable.ic_launcher, "Button 2 clicked", System.currentTimeMillis()); 
          } 
          noty.setLatestEventInfo(context, "Notice", msg, contentIntent); 
          notificationManager.notify(1, noty); 

         } else { 
          // do nothing 
         } 

         super.onReceive(context, intent); 
        } 
    }

因此，爲了使一個壽命長的故事，總之，我想發送的特定意圖我的onReceive方法只有當我的計時器過去了。

感謝提前:)

來源

2012-11-02 Bigalow

如果你不想更新當你的設備處於睡眠狀態，最好使用AlarmManager。（見http://developer.android.com/guide/topics/appwidgets/index.html）例如，像這樣：

 AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE); 
     alarmManager.setInexactRepeating(AlarmManager.RTC, System.currentTimeMillis() + YOUR_UPDATE_INTERVAL, 
       YOUR_UPDATE_INTERVAL, intent);

意圖是你的PendingIntent到你已經確立了自己的行動。

來源

2012-11-06 13:47:05

僅在時間流逝時發送意圖onUpdate

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