immersiveExperience.kt

/**
 * immersiveExperience for Android
 * set your app into immersive mode hidding navigation and status bar
 * call this function in Activity#onCreate
 */
private fun immersiveExperience() {
    val windowInsetsController =
        WindowCompat.getInsetsController(window, window.decorView)
    // Configure the behavior of the hidden system bars.
    windowInsetsController.systemBarsBehavior =
        WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE

    // Add a listener to update the behavior of the toggle fullscreen button when
    // the system bars are hidden or revealed.
    window.decorView.setOnApplyWindowInsetsListener { view, windowInsets ->
        // You can hide the caption bar even when the other system bars are visible.
        // To account for this, explicitly check the visibility of navigationBars()
        // and statusBars() rather than checking the visibility of systemBars().
        if (windowInsets.isVisible(WindowInsetsCompat.Type.navigationBars())
            || windowInsets.isVisible(WindowInsetsCompat.Type.statusBars())
        ) {
            // Hide both the status bar and the navigation bar.
            windowInsetsController.hide(WindowInsetsCompat.Type.systemBars())
        }
        view.onApplyWindowInsets(windowInsets)
    }
}