是否可以使用Cocoa Touch手势识别器与图层/ CALayer对象？ [英] Is it possible to use Cocoa Touch gesture recognizers with layers / CALayer objects?

问题描述

是否可以使用带有图层的手势识别器？让我们说，我想添加几个子图层到我的视图，实现拖放，以及点击单个元素。
是可能吗？

解决方案

您可以尝试在 UIView 然后调用

   - （CALayer *）hitTest：（CGPoint）thePoint 
 
在您的视图图层上找到
 
 
 
  CALayer * layerThatWasTapped = [gestureView.layer hitTest：[gestureRecognizer locationInView：gestureView]]; 
  
 
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?
解决方案
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]];


                        
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