UIImageView拖動和觸摸

Question

我想檢測拖動和觸摸uiimageview。 我該怎麼做？ 我需要在圖像翻轉事件中實現這樣的代碼。 iOS 4.2: Flip image using block animations

Answer 1

的阻力和觸摸爲您的圖片查看已分配GestureRecognizer

//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;