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
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
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
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
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
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
6.3 自定义触摸响应事件处理