Fullscreen issue in MAUI

Question

my app shows a blackscreen at the bottom in emulator and in real device i have black line on top and bottom as well . I tried everything inside app in android activity .

Answer 1

Hello,

You can do it by WindowInsetsControllerCompat.hide() method in the MainActivity.cs in Android platform.

Firstly, you can request the framework not fit the content view by WindowCompat.SetDecorFitsSystemWindows(this.Window, false);.

Then, you can create WindowInsetsControllerCompat to hide the system bars.

In the end, you need to set the SystemBarsBehavior to BehaviorShowTransientBarsBySwipe

BehaviorShowTransientBarsBySwipe to temporarily reveal hidden system bars with system gestures, such as swiping from the edge of the screen where the bar is hidden from. These transient system bars overlay your app’s content, might have some degree of transparency, and are automatically hidden after a short timeout.

You can refer to the following code.

public class MainActivity : MauiAppCompatActivity
  {
      protected override void OnCreate(Bundle? savedInstanceState)
      {
          base.OnCreate(savedInstanceState);

          WindowCompat.SetDecorFitsSystemWindows(this.Window, false);
          WindowInsetsControllerCompat windowInsetsController = new WindowInsetsControllerCompat(this.Window, this.Window.DecorView);
          // Hide system bars
          windowInsetsController.Hide(WindowInsetsCompat.Type.SystemBars());
          windowInsetsController.SystemBarsBehavior = WindowInsetsControllerCompat.BehaviorShowTransientBarsBySwipe;
}

For more information, you can refer to this Hide system bars for immersive mode document.

Best Regards, Leon Lu

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