- (void) handlePinch:(UIPinchGestureRecognizer*) recognizer  
{  
    recognizer.view.transform = CGAffineTransformScale(recognizer.view.transform, recognizer.scale, recognizer.scale);  
    recognizer.scale = 1;  
}  

UIPanGestureRecognizer * panRecognizer = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(handlePan:)];  
 //添加手势到 tabBarController.view  
 [tabBarController.view addGestureRecognizer:panRecognizer];  

- (void) handlePan:(UIPanGestureRecognizer*) recognizer  
{  
    CGPoint translation = [recognizer translationInView:self.view];  
    recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,recognizer.view.center.y + translation.y);  
    [recognizer setTranslation:CGPointZero inView:self.view];  
      
}  

/** 
 *  处理旋转手势 
 * 
 *  @param recognizer 旋转手势识别器对象实例 
 */  
- (void)handleRotation:(UIRotationGestureRecognizer *)recognizer 
{  
    recognizer.view.transform = CGAffineTransformRotate(recognizer.view.transform, recognizer.rotation);  
    recognizer.rotation = 0.0;  
}