how to cancel all active notification tray when one notification is clicked

Question

Hi ,

I am developing push notification to Xamarin App. I am able to send notification from back end service to android mobile app. I want to cancel all notification sent from notification tray when one of the notification is clicked. I am very new to Xamarin App development. Also I want to handle notification when app is not running, app is in back ground OR app is in foreground. Right now I am just able to receive notification to my test device while debugging app to phone while connected to machine. I am using Xamarin form app using C# .Net, which is having android and iOS app.

Thanks ,
Pratik

Answer 1

** iOS**
There is no way to capture the notification dismiss because iOS won't allow you to wake up the application.

Android
DeleteIntent: DeleteIntent is a PendingIntent object that can be associated with a notification and gets fired when the notification gets deleted, either by :

• User-specific action
• User Delete all the notifications.

You can set the Pending Intent to a broadcast Receiver and then perform any action you want.

Intent intent = new Intent(this, MyBroadcastReceiver.class);  
  PendingIntent pendingIntent = PendingIntent.getBroadcast(this.getApplicationContext(), 0, intent, 0);  
  Builder builder = new Notification.Builder(this):  
 ..... code for your notification  
  builder.setDeleteIntent(pendingIntent);  

MyBroadcastReceiver

public class MyBroadcastReceiver extends BroadcastReceiver {  
      @Override  
      public void onReceive(Context context, Intent intent) {  
             .... code to handle cancel  
         }  
  
  }