title: For Xamarin Android, I cannot handle background notification for clicking event
body: <p>I try create app with Xamarin Form that can receive notification both foreground and background on Android. For foreground, it works fine. I create firebase service to handle foreground notification. However, I cannot find the way to make background notification work.</p>
  
  <p>First, I try to update manifest to support this event.
  <a href="https://i.stack.imgur.com/xWfjj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xWfjj.png" alt="enter image description here"></a></p>
  
  <p>Secondly, I add some code to my splashactivity to handle background notification.
  <a href="https://i.stack.imgur.com/xGsay.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xGsay.png" alt="enter image description here"></a></p>
  
  <p>Next, I use the following PHP code to send notification to Firebase server.<a href="https://i.stack.imgur.com/DwkpU.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DwkpU.png" alt="enter image description here"></a></p>
  
  <p>On my device, I can see the above notification.<a href="https://i.stack.imgur.com/Fy48N.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Fy48N.png" alt="enter image description here"></a></p>
  
  <p>I tap notification to open my app. However, nothing happened and device log doesn't give me any idea about what going on.</p>
  
  <p><a href="https://i.stack.imgur.com/t0Prb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t0Prb.png" alt="enter image description here"></a></p>
  
  <p>Is there any incorrect in my code?</p>
  
  <p><em>Thanks,</em></p>