question

Hello,​

Welcome to our Microsoft Q&A platform!

You can add click event to image. when click the image send a messageCenter.

private async void SetupLargeTab()
        {
            var todoTabBar = (TodoTabBar)ShellItem;
            var layout = new FrameLayout(Context);

            var imageHandler = todoTabBar.LargeTab.Icon.GetHandler();
            Bitmap bitmap = await imageHandler.LoadImageAsync(todoTabBar.LargeTab.Icon, Context);
            var image = new ImageView(Context);
            image.SetImageBitmap(bitmap);
            image.Click += Image_Click;
            layout.AddView(image);

            var lp = new FrameLayout.LayoutParams(200, 200);
            _bottomView.Measure((int)MeasureSpecMode.Unspecified, (int)MeasureSpecMode.Unspecified);
            lp.BottomMargin = _bottomView.MeasuredHeight / 2;

            layout.LayoutParameters = lp;

            _shellOverlay.RemoveAllViews();
            _shellOverlay.AddView(layout);
        }

        private void Image_Click(object sender, System.EventArgs e)
        {
           
            MessagingCenter.Send<App, string>(App.Current as App, "OneMessage","");
        }

Then in the AppShell, you can Subscribe the message. Making a navigation, I navigate to the Page1

public partial class AppShell : Xamarin.Forms.Shell
    {
        public AppShell()
        {
            InitializeComponent();

            Routing.RegisterRoute("Page1", typeof(Page1));


            MessagingCenter.Subscribe<App, string>(App.Current, "OneMessage", (snd, arg) =>
            {
                Device.BeginInvokeOnMainThread( async() => {
                    //Navigation.PushAsync(new NavigationPage(new DetailsInfo(arg)));

                    await Shell.Current.GoToAsync("Page1");
                });
            });
        }
    }

Here is running screenshot.

Best Regards,

Leon Lu

---

If the response is helpful, please click "Accept Answer" and upvote it.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.