我在controller中添加了两个手势：
UIGestureRecognizer *recognizer;
recognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(handleRotation:)];
recognizer.cancelsTouchesInView = NO;
[self.scrollView addGestureRecognizer:recognizer];
[recognizer release];
UIGestureRecognizer *recognizer2;
recognizer2 = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinch:)];
recognizer2.cancelsTouchesInView = NO;
[self.scrollView addGestureRecognizer:recognizer2];
[recognizer2 release];
发现每次只能进入Pinch的手势，无法进入Rotation的手势。如果只添加一个，是都可以执行的。
我在Controller中添加了
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
但发现没有执行。于是在scrollView中添加同样的代码。虽然执行了，但效果还是一样。Pinch和Rotation这两个手势没有同时执行。都是只执行Pinch后没有执行Rotation
请问这是为什么？ 怎么让两个手势同时执行？
