1、tapGesture 点击手势

• 1.1 tapGesture 的创建

// 实例化点击手势对象UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapClick:)];// 向 imageView 添加点击手势[imageView addGestureRecognizer:tapGesture];

• 1.2 tapGesture 的设置

// 设置点击次数/*默认为 1：单击，为 2 时为双击*/singleTapGesture.numberOfTapsRequired = 1;// 设置触摸点数/*默认为 1，单个手指触摸*/singleTapGesture.numberOfTouchesRequired = 1;// 单双击共存/*设置单击手势与双击手势共存，当没有检测到双击手势或检测双击手势失败时单击手势才有效*/[singleTapGesture requireGestureRecognizerToFail:doubleTapGesture];// 获取点击的视图/*剪取点击的视图，附带点击手势一起剪取*/UIView *tapView = tapGesture.view;// 获取点击的图片/*复制点击的图片，附带点击手势一起复制*/UIImage *tapImage = ((UIImageView *)tapGesture.view).image;

• 1.3 自定义触摸响应事件处理

- (void)tapClick:(UITapGestureRecognizer *)tapGesture {}

2、longPressGesture 长按手势

• 2.1 longPressGesture 的创建

// 实例化长按手势对象UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressClick:)];// 向 imageView 添加长按手势[imageView addGestureRecognizer:longPressGesture];

• 2.2 longPressGesture 的设置

// 获取手势状态UIGestureRecognizerState state = longPressGesture.state;// 长按手势开始if (longPressGesture.state == UIGestureRecognizerStateBegan) {}// 长按手势触发结束if (longPressGesture.state == UIGestureRecognizerStateEnded) {}

• 2.3 自定义触摸响应事件处理

- (void)longPressClick:(UILongPressGestureRecognizer *)longPressGesture {}

3、rotationGesture 旋转手势

• 3.1 rotationGesture 的创建

// 实例化旋转手势对象UIRotationGestureRecognizer *rotationGesture = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@selector(rotationClick:)];// 向 imageView 添加旋转手势[imageView addGestureRecognizer:rotationGesture];

• 3.2 rotationGesture 的设置

// 获取旋转角度/*rotation 获取到的为弧度，1 度 ＝ PI/180 弧度*/CGFloat rotation = rotationGesture.rotation  * 180 * M_1_PI;// 图片旋转/*lastRotation 为之前的角度*/imageView.transform = CGAffineTransformMakeRotation(lastRotation + rotationGesture.rotation);// 旋转手势触发结束if (rotationGesture.state == UIGestureRecognizerStateEnded) {    lastRotation += rotationGesture.rotation;}

• 3.3 自定义触摸响应事件处理

// 用模拟器时需按住 option 键- (void)rotationClick:(UIRotationGestureRecognizer *)rotationGesture {}

4、pinchGesture 捏合手势

• 4.1 pinchGesture 的创建

// 实例化捏合手势对象UIPinchGestureRecognizer *pinchGesture = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(pinchClick:)];// 向 imageView 添加捏合手势[imageView addGestureRecognizer:pinchGesture];

• 4.2 pinchGesture 的设置

// 获取缩放倍数CGFloat scale = pinchGesture.scale;// 图片缩放imageView.transform = CGAffineTransformMakeScale(pinchGesture.scale, pinchGesture.scale);imageView.bounds = CGRectMake(0, 0, imageView.bounds.size.width * pinchGesture.scale, imageView.bounds.size.height * pinchGesture.scale);// 还原缩放倍数[pinchGesture setScale:1];

• 4.3 自定义触摸响应事件处理

// 用模拟器时需按住 option 键- (void)pinchClick:(UIPinchGestureRecognizer *)pinchGesture {}

5、panGesture 拖动手势

• 5.1 panGesture 的创建

// 实例化拖拽手势对象UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panClick:)];// 向 imageView 添加拖拽手势[imageView addGestureRecognizer:panGesture];

• 5.2 panGesture 的设置

// 获取手势位置CGPoint currentPoint = [panGesture locationInView:self.view];// 图片移动imageView.center = currentPoint;

• 5.3 自定义触摸响应事件处理

- (void)panClick:(UIPanGestureRecognizer *)panGesture {}

6、swipeGesture 滑动手势

• 6.1 swipeGesture 的创建

// 实例化滑动手势对象UISwipeGestureRecognizer *swipeGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeClick:)];// 设置滑动方向，默认为 0：向右滑动swipeGesture.direction = UISwipeGestureRecognizerDirectionLeft | UISwipeGestureRecognizerDirectionRight;// 向 imageView 添加拖拽手势[imageView addGestureRecognizer:swipeGesture];

• 6.2 swipeGesture 的设置

// 获取滑动方向UISwipeGestureRecognizerDirection direction = swipeGesture.direction;

• 6.3 自定义触摸响应事件处理

- (void)swipeClick:(UISwipeGestureRecognizer *)swipeGesture {}

7、旋转+捏合+拖拽

• 7.1 多手势的创建

// 默认情况下,控件只能监听一种手势// 如果要监听到多个手势,设置代理方法,告知允许多个手势存在// 旋转UIRotationGestureRecognizer *rotaitonGest = [[UIRotationGestureRecognizer alloc]initWithTarget:self action:@selector(rotationView:)];rotaitonGest.delegate =self;[self.imgView addGestureRecognizer:rotaitonGest];// 捏合UIPinchGestureRecognizer *pinchGest = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:@selector(pinchView:)];[self.imgView addGestureRecognizer:pinchGest];// 拖拽UIPanGestureRecognizer *panGest = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panView:)];[self.imgView addGestureRecognizer:panGest];

• 7.2 代理实现

/** *  多个手势同时存在的代理 */- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{        return YES;}

• 7.3 事件处理

- (void)rotationView:(UIRotationGestureRecognizer *)rotationGest {         // 旋转角度    // 旋转的角度也一个累加的过程    NSLog(@"旋转角度 %f",rotationGest.rotation);        // 设置图片的旋转    self.imgView.transform = CGAffineTransformRotate(self.imgView.transform, rotationGest.rotation);        // 清除 "旋转角度" 的累    rotationGest.rotation = 0;    }- (void)pinchView:(UIPinchGestureRecognizer *)pinchGest {    // 设置图片缩放    self.imgView.transform = CGAffineTransformScale(self.imgView.transform, pinchGest.scale, pinchGest.scale);        // 还原    pinchGest.scale = 1;}- (void)panView:(UIPanGestureRecognizer *)panGest {        // 拖拽的距离(距离是一个累加)    CGPoint trans = [panGest translationInView:panGest.view];    NSLog(@"%@",NSStringFromCGPoint(trans));        // 设置图片移动    CGPoint center =  self.imgView.center;    center.x += trans.x;    center.y += trans.y;    self.imgView.center = center;        // 清除累加的距离    [panGest setTranslation:CGPointZero inView:panGest.view];}