Android 11 not supported

[Nomicks]

Don't know how to implement the new method ...
https://stackoverflow.com/questions/62577645/android-view-view-systemuivisibility-deprecated-what-is-the-replacement

For full screen in JAVA

@OverRide
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WindowCompat.setDecorFitsSystemWindows(getWindow(), false);
}

WindowInsetsControllerCompat windowInsetsController =
ViewCompat.getWindowInsetsController(getWindow().getDecorView());
if (windowInsetsController == null) {
return;
}
// Hide the system bars.
windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());

// Show the system bars.
windowInsetsController.show(WindowInsetsCompat.Type.systemBars());

private void showSystemUI() {
WindowCompat.setDecorFitsSystemWindows(getWindow(), true);
new WindowInsetsControllerCompat(getWindow(), yourRootView).show(WindowInsetsCompat.Type.systemBars());
}

    private void hideSystemUI() {
        WindowCompat.setDecorFitsSystemWindows(getWindow(), false);
        WindowInsetsControllerCompat controller = new WindowInsetsControllerCompat(getWindow(), yourRootView);
        controller.hide(WindowInsetsCompat.Type.systemBars());
        controller.setSystemBarsBehavior(WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE);
    }