How to cancel a foreground service from using the

问题:

I'm currently creating a foreground service with a notification that appears in the notification bar when the service starts. If the service stops, the notification dismisses. My question is, is there a way to stop the service when "clear all notifications" or a dismiss of the notification (swipe) occurs?

Updated to include implementation of notification:

public int onStartCommand(Intent intent, int flags, int startId)
{   
    Log.d(CLASS, "onStartCommand service started.");

    if (getString(R.string.service_start_action) == intent.getAction())
    {
        Intent intentForeground = new Intent(this, ServiceMain.class)
            .setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);    
        PendingIntent pendIntent = PendingIntent.getActivity(getApplicationContext(), 0, intentForeground, 0);      
        Notification notification;
        Notification.Builder builder = new Notification.Builder(getApplicationContext())
            .setSmallIcon(android.R.drawable.btn_star)
            .setTicker("Service started...")
            .setContentIntent(pendIntent)
            .setDefaults(Notification.DEFAULT_ALL)
            .setOnlyAlertOnce(true)
            .setOngoing(false);
        notification = builder.build();
        notification.flags |= Notification.FLAG_FOREGROUND_SERVICE;

        startForeground(SERV_NOTIFY, notification);
        player.start();
    }
    else
    {
        Log.d(CLASS, "onStartCommand unable to identify acition.");
    }

    return START_STICKY;        
}

回答1:

The user is not allowed to swipe away a notification generated by an ongoing foreground service.

Hence, stopForeground(false) first, which allows the notification to be swiped away by the user thereafter (at least on Lollipop+). For pre-Lollipop, you may have to stopForeground(true), which stops foreground and removes the notification, then re-issue the notification with notificationManager.notify(yourNotificationID, yourNotificationObject), so that your notification is visible but swipeable.

Crucially, set up the notification object with a delete intent that is triggered when the user swipes it away.

(new NotificationCompat.builder(this).setDeleteIntent(deletePendingIntent)).build()

where deletePendingIntent is something like

Intent deleteIntent = new Intent(this, YourService.class);
deleteIntent.putExtra(someKey, someIntValue);
PendingIntent deletePendingIntent = PendingIntent.getService(this,
someIntValue, 
deleteIntent, 
PendingIntent.FLAG_CANCEL_CURRENT);

When the user swipes it away, the intent with its extra is delivered to the service. Handle the delivered extra within onStartCommand, i.e. check that intent != null, intent.getExtras() != null, then extract the value from the extras bundle given someKey, and if it matches someIntValue, then call stopSelf().

回答2:

The notification of a foregraound service cannot be cleared. The only way is stopping the service.

So I beleive the issue you want to solve, will never happen.

回答3:

My question is, is there a way to stop the service when "clear all notifications" or a dismiss of the notification (swipe) occurs?

Assuming that your Notification is set up to allow it to be cleared, the deleteIntent should be invoked when it is cleared. You could set this to a getBroadcast() PendingIntent, pointing to a manifest-registered BroadcastReceiver that calls stopService().

回答4:

this code works for me:

this.stopForeground(false);
mNotificationManager.cancel(NOTIFY_ID);

and you should set your return value of onStartCommand, STRAT_STICKY will restart your service.

回答5:

There is a dismissIntent you can set in the notification you create, though I thought foreground Service notifications cannot be cleared?