Is it possible to use Cocoa Touch gesture recogniz

问题:

Is it possible to use gesture recognizers with layers? Let's say I want to add several sublayers to my view and implement drag&drop as well as tapping on single element. Is it possible at all ? What is the best pattern?

回答1:

You could try adding gesturerecognizers to your UIView and then call

- (CALayer *)hitTest:(CGPoint)thePoint

on your view's layer to find which layer you hit, eg;

CALayer* layerThatWasTapped = [gestureView.layer hitTest:[gestureRecognizer locationInView:gestureView]];