protected override void OnCreate(Bundle bundle) { TabLayoutResource = Resource.Layout.Tabbar; ToolbarResource = Resource.Layout.Toolbar; base.Window.RequestFeature(WindowFeatures.ActionBar); // Name of the MainActivity theme you had there before. // Or you can use global::Android.Resource.Style.ThemeHoloLight base.SetTheme(Resource.Style.MainTheme); base.OnCreate(bundle); global::Xamarin.Forms.Forms.Init(this, bundle); Plugin.Iconize.Iconize.Init(Resource.Id.toolbar, Resource.Id.sliding_tabs); // Could also be Resource.Id.tabs ToastService.Init(this); PermissionService.Init(this); PushService.SetContext(this); LoadApplication(new App()); AppDomain.CurrentDomain.UnhandledException += CurrentDomain_UnhandledException; AppDomain.CurrentDomain.FirstChanceException += CurrentDomain_FirstChanceException; }