Xamarin Forms Project

I want to create a simple 2 page xamarin forms app which will be available for all platforms. 1. Splash page 2. Webview. (for iOS use WKWebView) 3. Add Onesignal SDK 4. Add admob SDK I want the app to be completely full screen (Device navigation bar must be hidden) Also Android 1. Make sure back button doesn't close the app when using webview 2. Make sure the keyboard doesn't cover the webview (when keyboard is opened, it will resize webview so that you can see everything.