I have a unity project and I use a Android (java) plugin to get camera data. I draw this on a TextureView. I want to hide/show this view when I press a button in unity. But my app crashes when I setVisibility

onCreate

UnityPlayer.currentActivity.addContentView(texView, new FrameLayout.LayoutParams(400, 400));

java:

public void HideVideo()
{
    //Hide view
    _TextureView.setVisibility(View.INVISIBLE);
}

Is there an extra function I need to call, or may I only call it on certain times?

None of these thins work, they all make my app crash.

    _TextureView.setVisibility(View.INVISIBLE);
    _TextureView.setActivated(false);
    _TextureView.setAlpha(0);
    _TextureView.setTranslationY(-1000);