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我有一个非常奇怪的问题。我已经写了一个带有2个SimpleNotifications的服务,由一个Thread调用,但是当我点击它们来启动DestinationActiviy时,我发现收到的Intent包含了最后点击的通知的附加内容。错误意图receveid在通知活动中(服务中)

例如: 步骤1)SimpleNotification 2称为 步骤2)SimpleNotification 1被称为 步骤3)点击SimpleNotification 2

结果:DestinationActivity表示: “SimpleNotification1”

你能告诉我为什么?我对此感到很惊讶......

这是我服务的代码:

public class MyLocalService extends Service { 

private final static String LOG_TAG = "MyLocalService"; 

private final static int MAX_NOTIFICATION_NUMBER = 10; 

private final static int SIMPLE_NOTIFICATION_ID = 1; 

private NotificationManager notificationManager;   

private BackgroundThread backgroundThread; 

private Notification notification; 

private PendingIntent pIntent; 
private int notificationNumber; 
private PendingIntent pIntent2; 
private Intent intent; 
private Intent intent2; 

@Override 
public void onCreate() { 
     super.onCreate(); 
     backgroundThread = new BackgroundThread(); 
     backgroundThread.start(); 
     notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 
     Log.i(LOG_TAG, "Service Created"); 

} 

public void sendNotification1(){ 
     notification = new Notification(R.drawable.icon,"Simple Notification1", System.currentTimeMillis());    
     notification.flags |= Notification.FLAG_AUTO_CANCEL; 
     intent = new Intent(this, DestinationActiviy.class); 
     intent.putExtra("notificationType", "Simple Notification1"); 
     pIntent = PendingIntent.getActivity(this, 0, intent,PendingIntent.FLAG_UPDATE_CURRENT);  
     notificationNumber++; 
     notification.number=notificationNumber; 
     notification.setLatestEventInfo(this, "Simple Notification1","Simple Notification Extended", pIntent); 
     notificationManager.notify(1, notification); 
} 

public void sendNotification2(){ 
     // Creiamo la Notification 
     notification = new Notification(R.drawable.icon,"Simple Notification2", System.currentTimeMillis());    
     notification.flags |= Notification.FLAG_AUTO_CANCEL; 
     intent2 = new Intent(this, DestinationActiviy.class); 
     intent2.putExtra("notificationType", "Simple Notification2"); 
     pIntent2 = PendingIntent.getActivity(this, 0, intent2,PendingIntent.FLAG_UPDATE_CURRENT);  
     notificationNumber++; 
     notification.number=notificationNumber; 
     notification.setLatestEventInfo(this, "Simple Notification2","Simple Notification Extended", pIntent2); 
     notificationManager.notify(2, notification); 
} 

@Override 
public int onStartCommand(Intent intent, int flags, int startId) { 
     Log.i(LOG_TAG, "Service Started"); 
     notificationNumber = 0; 
     return super.onStartCommand(intent, flags, startId); 
} 

@Override 
public void onDestroy() { 
     backgroundThread.running = false; 
     super.onDestroy(); 
     Log.i(LOG_TAG, "Service Destroyed"); 
} 

@Override 
public IBinder onBind(Intent arg0) { 
     return null; 
} 


private final class BackgroundThread extends Thread { 
     private final static long MIN_DELAY = 2000L;    
     private final static long MAX_RANDOM_DELAY = 10000L; 
     public boolean running= true; 
     public void run() { 
       Log.i(LOG_TAG, "BackgroundThread Started");      
       Random random = new Random(); 
       while(running && notificationNumber<MAX_NOTIFICATION_NUMBER){ 
         long randomDelay = MIN_DELAY + Math.abs(random.nextInt() %MAX_RANDOM_DELAY); 
         Log.i(LOG_TAG, "Delay is (ms) "+randomDelay); 
         try{ 
           Thread.sleep(randomDelay); 
           } 
         catch(InterruptedException ie){ 

         } 
         sendNotification2(); 
         sendNotification1(); 
       } 
       stopSelf(); 
     } 
} 
} 

从MainActivity服务启动:

public class LocalServiceTestActivity extends Activity { 

private Intent serviceIntent; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    serviceIntent = new Intent(this,MyLocalService.class); 
} 

public void startLocalService(View button){ 
    startService(serviceIntent); 
} 

public void stopLocalService(View button){ 
    stopService(serviceIntent); 
}  
} 

而且DestinationActivity:

public class DestinationActivity extends Activity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.notification_activity); 
    // Otteniamo le informazioni associate all'Intent 
    Bundle extras = getIntent().getExtras(); 
    if (extras != null) { 
     TextView textView = (TextView) findViewById(R.id.outputView); 
     textView.setText(extras.getString("notificationType")); 
    } 
} 

} 

我也尝试过相同的意图,具有相同的pendingIntent具有相同的通知或viceversa与不同的Inte nt,pendingIntent(像这样的代码)...我不知道如何解决这个问题。请帮助我,谢谢。

+0

这里没有足够的信息。服务在哪里开始? – Jivings 2012-01-29 11:16:36

+0

我编辑了我的问题。现在清楚吗? :-) – Aerox 2012-01-29 20:45:10

回答

1

当您创建的PendingIntent这里第二个提示:

pIntent2 = PendingIntent.getActivity(this, 0, 
       intent2,PendingIntent.FLAG_UPDATE_CURRENT);  

指定PendingIntent.FLAG_UPDATE_CURRENT标志。由于第二个通知和第一个通知是“相同的”(即:它们是同一活动的意图),因此此标志防止创建新的PendingIntent。相反,它只是使现有的PendingIntent被新的Extras修改。见documentation for PendingIntent

所以你得到的是两个通知,两个共享相同 PendingIntent。无论您选择哪一个通知,您都会从第二个通知中获得附加功能。