xamarin Android & iOS Mobile app geofence implement

This project has a geofence module which is sending push notification with one signal to the app user when passed nearby the coordinates of the location. As per custom work, we need to add redirect to google Maps when clicking on the push notification. For Android we will open Google Map app and for iOS we need to open Apple map.
If Android and iOS both user not installed any map app than we will open browser with https://www.google.com/maps google map website.