public override void ViewDidDisappear(bool animated)
{
base.ViewDidDisappear(animated);
//remove result view
resultView.RemoveFromSuperview();
resultView.Dispose();
resultView = null;
//we have to erase the scan view so that there are no dependencies for the viewcontroller left.
scanView.RemoveFromSuperview();
scanView.Dispose();
scanView = null;
base.Dispose();
}
