protected override void OnCreate(Bundle savedInstanceState) { TabLayoutResource = Resource.Layout.Tabbar; ToolbarResource = Resource.Layout.Toolbar; base.OnCreate(savedInstanceState); global::Xamarin.Forms.Forms.Init(this, savedInstanceState); LoadApplication(new App()); Locator.CurrentMutable.RegisterConstant <IPaymentProcessor>(new PaymentProcessor(ApplicationContext)); Checkout.Attach(SupportFragmentManager); }