? 一般來說檐束，UIGestureRecognizer對象不會將本身已經(jīng)處理過的觸摸事件再交給其它的UIGestureRecognizer對象處理宜雀，例如：想實現(xiàn)先通過長按選擇屏幕上的線條合瓢，然后再拖動，由于前述UIGestureRecognizer對象的特性，實際效果是只能識別長按手勢，而無法識別之后的拖動手勢。
? 要處理這個問題诈乒，就需要用到UIGestureRecognizerdelegate來解決了罩扇，例子如下:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer? shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)other {
if (gestureRecognizer == panRecognize) {
? ?return YES;
? }
return NO;
}
