objective-c - gestureRecognizer:gestureRecognizer shouldReceiveTouch: 没有被调用

Question

• (BOOL)gestureRecognizer:(UIGestureRecognizer )gestureRecognizer shouldReceiveTouch:(UITouch )touch

在scrollview中 添加了一个view,并给它增加了一个拖动手势。导致scrollview的拖动和view的pan拖动手势冲突。
解决冲突是要使用该函数。但是怎么没有被调用？

Answer 1

This method is the delegate method of UIGestureRecognizer. Have you set the delegate for your customized gesture?

Answer 2

Just use the addTarget method, there is no need to use Delegate
If you use Delegate, you need to set
GestureRecognizer.delegate = xxx