ads2019-tap-to-focus.kt

fun onTouch(x:Float, y:Float) {
  val meteringPoint = new DisplayOrientedMeteringPointFactory(mSurfaceView.getDisplay(), cameraSelector, mSurfaceView.getWidth(), mSurfaceView.getHeight()).createPoint(x.y);
  
  // Prepare focus action to be triggered.
  val action = FocusMeteringAction.Builder(meteringPoint).build();
  
  // Execute focus action
  cameraControl.startFocusAndMetering(action);
}