ios - Pan 和 2 Finger Pinch 同时 iOS - 同时 -

Question

2 手势识别器:

UIPinchGestureRecognizer *twoFingerPinch = 
[[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(handlePinch:)];
[croppper addGestureRecognizer:twoFingerPinch];

UIPanGestureRecognizer *PanRecognizer = [[[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePan:)] autorelease];
[croppper addGestureRecognizer:PanRecognizer];

和:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {        
    return YES;
}   

但是同时捏和平移是行不通的...我经常可以捏，因为平底锅识别器打开了。

问候

Answer 1

您似乎没有为每个手势识别器设置委托(delegate)。 gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer: 是一个委托(delegate)方法，因此如果手势识别器没有委托(delegate)，则不会调用此方法。

因此，默认返回值为NO，因此不会同时识别手势。