Karamunting.Android.PermissionManager (nuget): Automatically search for permission in AndroidManifests file and request for the same. Also, if request is cancelled it shows a popup window with alert to grant permission. Ported to Xamarin.Android by Rofiq Setiawan (rofiqsetiawan@gmail.com).  You can find example on https://github.com/rofiqsetiawan/PermissionManagerDemo
Keywords: android|customizable|easy-to-use|permission|permissions|xamarin|xamarin-android|monodroid|xamarin.android