1.平移
uipangesturerecognizer *pan = [[uipangesturerecognizer alloc] initwithtarget:self action:@selector(pan:)];
新增手勢
[self.imagev addgesturerecognizer:pan];
實現手勢方法
手指在螢幕上移動進呼叫
- (void)pan:(uipangesturerecognizer *)pan
2.旋轉
新增旋轉手勢
uirotationgesturerecognizer *rotation = [[uirotationgesturerecognizer alloc] initwithtarget:self action:@selector(rotation:)];
設定**,設定**的目的就讓它能夠同時支援旋轉跟縮放
rotation.delegate = self;
新增手勢
[self.imagev addgesturerecognizer:rotation];
當旋轉時呼叫
- (void)rotation:(uirotationgesturerecognizer *)rotation
3.新增縮放手勢
新增縮放手勢
uipinchgesturerecognizer *pinch = [[uipinchgesturerecognizer alloc] initwithtarget:self action:@selector(pinch:)];
[self.imagev addgesturerecognizer:pinch];
縮放手勢時呼叫
-(void)pinch:(uipinchgesturerecognizer *)pinch
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