Hide automatically the navigation bar in code behind using custom library with OnSystemUiVisibilityChangeListener

package mn.ho.mypoker.libraries.views

import android.os.Handler
import android.view.View
import android.view.Window


class SystemUiVisibilityHider(w: Window) : View.OnSystemUiVisibilityChangeListener {
    private var window: Window = w
    private var isFlagHideSystemUI = false    private var flagHideSystemUI = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE            or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION            or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN            or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION            or View.SYSTEM_UI_FLAG_FULLSCREEN            or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY)

    init {
        this.window.decorView.setOnSystemUiVisibilityChangeListener(this)
    }

    override fun onSystemUiVisibilityChange(visibility: Int) {
        if (this.window.decorView.systemUiVisibility != flagHideSystemUI) {
            Handler().postDelayed({                isFlagHideSystemUI = false            }, 1000)
        }
    }

    fun run() {
        if (this.window.decorView.systemUiVisibility != flagHideSystemUI) {
            isFlagHideSystemUI = true            this.window.decorView.systemUiVisibility = flagHideSystemUI        }
    }
}

on Activity

override fun onTouchEvent(event: MotionEvent?): Boolean {
    sysNavHider?.run()
    return super.onTouchEvent(event)
}