UIPinchGestureRecognizer * pinchGesture = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchGesture:)];

  

[redView addGestureRecognizer:pinchGesture];

  

[pinchGesture release];

- (void)pinchGesture:(UIPinchGestureRecognizer *)pinchGesture

{       pinchGesture.view.transform = CGAffineTransformScale(pinchGesture.view.transform, pinchGesture.scale, pinchGesture.scale);      

将之前变化的比例置为 1 . .

    pinchGesture.scale = 1.0;        [pinchGesture setScale:1.0];    }