Hide StatusBar and NavigationBar

// Samsung, MI devices has extra navigation-bar
// to remove this bar

Usage: 

  onCreate() {
    super.onCreate()
    setConte......
    edgeToEdge...
    
//    then  apply this
    
    window.decorView.removeStatusAndNavigationFromDecorView()
  }


// Kotlin Ex
fun View?.removeStatusAndNavigationFromDecorView(removeStatusBar: Boolean = false) {
    try {
        Handler(Looper.getMainLooper()).postDelayed({
            (this as ViewGroup?)?.let {
                for (item in 1 until it.childCount) {
                    try {
                        if(removeStatusBar) {
                            if(it.getChildAt(item).id == android.R.id.statusBarBackground)
                                it.getChildAt(item).alpha = 0f
                        }
                        if(it.getChildAt(item).id == android.R.id.navigationBarBackground)
                            it.getChildAt(item).alpha = 0f
                    } catch (e: Exception) {
                        e.printStackTrace()
                    }
                }
            }
        }, 200)
    } catch (ignored: Exception) {

    }
}