[移动开发]android全屏显示

fun Activity.fullScreen() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        val controller = window.insetsController

        controller?.hide(WindowInsets.Type.statusBars())
    } else {
        window.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN)
    }
}

或者

actionBar?.setDisplayHomeAsUpEnabled(true)

if (Build.VERSION.SDK_INT >= 30) {

    window.insetsController?.hide(WindowInsets.Type.statusBars() or WindowInsets.Type.navigationBars())
} else {
    // Note that some of these constants are new as of API 16 (Jelly Bean)
    // and API 19 (KitKat). It is safe to use them, as they are inlined
    // at compile-time and do nothing on earlier devices.


    window.decorView.systemUiVisibility =
        View.SYSTEM_UI_FLAG_LOW_PROFILE or
                View.SYSTEM_UI_FLAG_FULLSCREEN or
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE or
                View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY or
                View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION or
                View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
}