react-native-push-notification how to show badge number on iOS?

Question

I'm a noob here, and I just faced a problem. The problem is that the app badge number won't show when a notification arrives/received.

I tried this:

DeviceEventEmitter.addListener('notificationActionReceived', action => {
  PushNotification.setApplicationIconBadgeNumber(10) // 10 is just to test
});

and this:

PushNotification.configure({
  ...

  onNotification: function(notification) {
      PushNotification.setApplicationIconBadgeNumber(10) // 10 is just to test
  },

  ...
})

But still not working.