前言
NS_CLASS_AVAILABLE_IOS(3_2) @interface UIGestureRecognizer : NSObject @available(iOS 3.2, *) public class UIGestureRecognizer : NSObject // 点击（轻点） NS_CLASS_AVAILABLE_IOS(3_2) @interface UITapGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UITapGestureRecognizer : UIGestureRecognizer // 长按（按住不放） NS_CLASS_AVAILABLE_IOS(3_2) @interface UILongPressGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UILongPressGestureRecognizer : UIGestureRecognizer // 旋转（两个手指进行旋转） NS_CLASS_AVAILABLE_IOS(3_2) @interface UIRotationGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UIRotationGestureRecognizer : UIGestureRecognizer // 捏合（两个手指，缩放手势） NS_CLASS_AVAILABLE_IOS(3_2) @interface UIPinchGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UIPinchGestureRecognizer : UIGestureRecognizer // 拖动（移动速度较慢） NS_CLASS_AVAILABLE_IOS(3_2) @interface UIPanGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UIPanGestureRecognizer : UIGestureRecognizer // 滑动（快速移动） NS_CLASS_AVAILABLE_IOS(3_2) @interface UISwipeGestureRecognizer : UIGestureRecognizer @available(iOS 3.2, *) public class UISwipeGestureRecognizer : UIGestureRecognizer
1、tapGesture 点击手势
1.1 tapGesture 的创建
Objective-C
// 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];
Swift
// 实例化点击手势对象 let tapGesture:UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.tapClick(_:))) // 向 imageView 添加点击手势 imageView?.addGestureRecognizer(tapGesture)
1.2 tapGesture 的设置
Objective-C
// 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;
Swift
// 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 */ let tapView:UIView = 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 */ let tapImage:UIImage = (tapGesture.view! as! UIImageView).image!
1.3 自定义触摸响应事件处理
Objective-C
- (void)tapClick:(UITapGestureRecognizer *)tapGesture { }Swift
func tapClick(tapGesture:UITapGestureRecognizer) { }
2、longPressGesture 长按手势
2.1 longPressGesture 的创建
Objective-C
// 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];
Swift
// 实例化长按手势对象 let longPressGesture:UILongPressGestureRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.longPressClick(_:))) // 向 imageView 添加长按手势 imageView?.addGestureRecognizer(longPressGesture)
2.2 longPressGesture 的设置
Objective-C
// 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) { }Swift
// 获取手势状态 let state:UIGestureRecognizerState = longPressGesture.state // 长按手势开始 if longPressGesture.state == UIGestureRecognizerState.Began { } // 长按手势触发结束 if longPressGesture.state == UIGestureRecognizerState.Ended { }
2.3 自定义触摸响应事件处理
Objective-C
- (void)longPressClick:(UILongPressGestureRecognizer *)longPressGesture { }Swift
func longPressClick(longPressGesture:UILongPressGestureRecognizer) { }
3、rotationGesture 旋转手势
3.1 rotationGesture 的创建
Objective-C
// 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];
Swift
// 实例化旋转手势对象 let rotationGesture:UIRotationGestureRecognizer = UIRotationGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.rotationClick(_:))) // 向 imageView 添加旋转手势 imageView?.addGestureRecognizer(rotationGesture)
3.2 rotationGesture 的设置
Objective-C
// 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; }Swift
// 获取旋转角度 /* rotation 获取到的为弧度，1 度 ＝ PI/180 弧度 */ let rotation:CGFloat = rotationGesture.rotation * 180 * CGFloat(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 == UIGestureRecognizerState.Ended { lastRotation += rotationGesture.rotation }
3.3 自定义触摸响应事件处理
Objective-C
// 用模拟器时需按住 option 键 - (void)rotationClick:(UIRotationGestureRecognizer *)rotationGesture { }Swift
// 用模拟器时需按住 option 键 func rotationClick(rotationGesture:UIRotationGestureRecognizer) { }
4、pinchGesture 捏合手势
4.1 pinchGesture 的创建
Objective-C
// 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];
Swift
// 实例化捏合手势对象 let pinchGesture:UIPinchGestureRecognizer = UIPinchGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.pinchClick(_:))) // 向 imageView 添加捏合手势 imageView?.addGestureRecognizer(pinchGesture)
4.2 pinchGesture 的设置
Objective-C
// 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];
Swift
// 获取缩放倍数 let scale:CGFloat = 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.scale = 1
4.3 自定义触摸响应事件处理
Objective-C
// 用模拟器时需按住 option 键 - (void)pinchClick:(UIPinchGestureRecognizer *)pinchGesture { }Swift
// 用模拟器时需按住 option 键 func pinchClick(pinchGesture:UIPinchGestureRecognizer) { }
5、panGesture 拖动手势
5.1 panGesture 的创建
Objective-C
// 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];
Swift
// 实例化拖拽手势对象 let panGesture:UIPanGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.panClick(_:))) // 向 imageView 添加拖拽手势 imageView?.addGestureRecognizer(panGesture)
5.2 panGesture 的设置
Objective-C
// 获取手势位置 CGPoint currentPoint = [panGesture locationInView:self.view]; // 图片移动 imageView.center = currentPoint;
Swift
// 获取手势位置 let currentPoint:CGPoint = panGesture.locationInView(self.view) // 图片移动 imageView?.center = currentPoint
5.3 自定义触摸响应事件处理
Objective-C
- (void)panClick:(UIPanGestureRecognizer *)panGesture { }Swift
func panClick(panGesture:UIPanGestureRecognizer) { }
6、swipeGesture 滑动手势
6.1 swipeGesture 的创建
Objective-C
// 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];
Swift
// 实例化滑动手势对象 let swipeGesture:UISwipeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(UiGestureRecognizer.swipeClick(_:))) // 设置滑动方向，默认为 0：向右滑动 swipeGesture.direction = [.Left, .Right] // 向 imageView 添加拖拽手势 imageView?.addGestureRecognizer(swipeGesture)
6.2 swipeGesture 的设置
Objective-C
// 获取滑动方向 UISwipeGestureRecognizerDirection direction = swipeGesture.direction;
Swift
// 获取滑动方向 let direction:UISwipeGestureRecognizerDirection = swipeGesture.direction
6.3 自定义触摸响应事件处理
Objective-C
- (void)swipeClick:(UISwipeGestureRecognizer *)swipeGesture { }Swift
func swipeClick(swipeGesture:UISwipeGestureRecognizer) { }