Ios UIImageView拖放和触摸

我想检测uiimageview上的拖放和触摸。 我该怎么做？ 我需要在图像翻转事件中实现这样的代码。

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对于图像视图的拖放操作，您必须指定手势识别器

//drag your object
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panDetected:)];
[self.imageSubVw addGestureRecognizer:panRecognizer];

// scale your object
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchDetected:)];
[self.imageSubVw addGestureRecognizer:pinchRecognizer];

// rotate your object
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationDetected:)];
[self.imageSubVw addGestureRecognizer:rotationRecognizer];

panRecognizer.delegate = self;
pinchRecognizer.delegate = self;
rotationRecognizer.delegate = self;

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对于图像视图的拖放和触摸，您必须指定手势识别器

//drag your object
UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panDetected:)];
[self.imageSubVw addGestureRecognizer:panRecognizer];

// scale your object
UIPinchGestureRecognizer *pinchRecognizer = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchDetected:)];
[self.imageSubVw addGestureRecognizer:pinchRecognizer];

// rotate your object
UIRotationGestureRecognizer *rotationRecognizer = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationDetected:)];
[self.imageSubVw addGestureRecognizer:rotationRecognizer];

panRecognizer.delegate = self;
pinchRecognizer.delegate = self;
rotationRecognizer.delegate = self;