gestureRecognizer

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{

如果当前触碰到的views属于[self class]，那么就拦截这个触碰事件，即去响应这个事件

if([touch.view isKindOfClass:[self class]]){

return YES;

}

return NO;

}

属于UIGestureRecognizerDelegate.苹果API的私有方法，但是上线不会被拒

参考:http://blog.sina.com.cn/s/blog_59fb90df0101apn4.html