listen for touch events on ArSceneView

MainActivity.kt

arSceneView.scene.setOnTouchListener {
    hitTestResult : HitTestResult?, motionEvent : MotionEvent? ->
    gestureDetectorCompat!!.onTouchEvent(motionEvent)
    when (gestureDetector.gestureType) {
        GestureDetector.GestureType.SINGLE_TAP -> {
            Toast.makeText(this, "SINGLE TAP", Toast.LENGTH_SHORT).show()
        }
        GestureDetector.GestureType.DOUBLE_TAP -> {
            Toast.makeText(this, "DOUBLE TAP", Toast.LENGTH_SHORT).show()
        }
        GestureDetector.GestureType.LONG_PRESS -> {
            Toast.makeText(this, "LONG PRESS", Toast.LENGTH_SHORT).show()
        }
        else -> { }
    }
    gestureDetector.resetGestureType()
    true
}