点击

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];

tap.numberOfTapsRequired = 1;

[imageView addGestureRecognizer:tap];

[tap release];

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拖拽

UIPanGestureRecognizer *Pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];

[imageView addGestureRecognizer:Pan];

[Pan release];

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捏合

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

[(UIImageView *) imageView addGestureRecognizer:pinch];

[pinch release];

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旋转

UIRotationGestureRecognizer *rotation = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotation:)];

[imageView addGestureRecognizer:rotation];

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扫

UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipe:)];

[imageView addGestureRecognizer:swipe];

[swipe release];

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