[assembly: ExportRenderer(typeof(AppShell), typeof(CustomShellRenderer))]
namespace App4.Droid
{
    public class CustomShellRenderer : ShellRenderer
    {
         public CustomShellRenderer(Context context) : base(context)
         {
         }

         protected override IShellBottomNavViewAppearanceTracker CreateBottomNavViewAppearanceTracker(ShellItem shellItem)
         {
             return new CustomShellBottomNavViewAppearanceTracker();
         }
     }

     public class CustomShellBottomNavViewAppearanceTracker : IShellBottomNavViewAppearanceTracker
     {
         public void Dispose()
         {
         }

         public void ResetAppearance(BottomNavigationView bottomView)
         {
         }

         public void SetAppearance(BottomNavigationView bottomView, IShellAppearanceElement appearance)
         {
             (bottomView.Parent as LinearLayout)?.SetBackgroundColor(Color.Transparent.ToAndroid());

              bottomView.SetBackgroundColor(Color.Transparent.ToAndroid());
              bottomView.LabelVisibilityMode = LabelVisibilityMode.LabelVisibilityUnlabeled;
         }
     }
}

shell customrenderer in android

I want to overlap the content part and bottom navigation part

I know how to implement purely XAML-only without shell and CustomRender, but I don't want to. Because my project is highly dependent on Shell

ex)

https://github.com/naweed/MauiPlanets

above app is overlap bottom navigation and contentpage in my case remove tabbar background and remain icons Simply put, I would like to lower the height of the content page overlapping with the bottom navigation.

CodePudding user response：

Full screen should be able to meet your need, if I understand correctly.

Add this to your MainActivity.cs:

protected override void OnCreate(Bundle savedInstanceState)
{
    ...

    IWindowInsetsController wicController = Window.InsetsController;
    Window.SetDecorFitsSystemWindows(false);
    Window.SetFlags(WindowManagerFlags.Fullscreen, WindowManagerFlags.Fullscreen);

    if (wicController != null)
    {
       wicController.Hide(WindowInsets.Type.NavigationBars());
    }
           
}