#pragma mark-UIGestureRecognizerDelegate Methods// 只要实现这个方法，就可以实现两个手势同时响应- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {        return YES;}