swift

UIGestureRecognizer有许多子类，用于监听一些常见的手势事件，这些子类主要有：

1、首先创建几个view，来用于手势的检测

let view1 = UIView()
let view2 = UIView()
let view3 = UIView()
let view4 = UIView()
let view5 = UIView()
let view6 = UIView()
let view7 = UIView()
let view8 = UIView()     
view1.backgroundColor = UIColor.red
view2.backgroundColor = UIColor.yellow
view3.backgroundColor = UIColor.blue
view4.backgroundColor = UIColor.brown
view5.backgroundColor = UIColor.red
view6.backgroundColor = UIColor.yellow
view7.backgroundColor = UIColor.blue
view8.backgroundColor = UIColor.brown
        
view1.frame = CGRect(x:self.view.bounds.width/2-100,y:65,100,height:100)
self.view.addSubview(view1)
        
view2.frame = CGRect(x:self.view.bounds.width/2-100,y:65+100+5,100,height:100)
     self.view.addSubview(view2)
        
view3.frame = CGRect(x:self.view.bounds.width/2-100,y:65+100*2+5*2,100,height:100)
     self.view.addSubview(view3)
        
view4.frame = CGRect(x:self.view.bounds.width/2-100,y:65+100*3+5*3,100,height:100)
     self.view.addSubview(view4)
        
view5.frame = CGRect(x:self.view.bounds.width/2+50,y:65,100,height:100)
     self.view.addSubview(view5)
        
view6.frame = CGRect(x:self.view.bounds.width/2+50,y:65+100+5,100,height:100)
     self.view.addSubview(view6)
        
view7.frame = CGRect(x:self.view.bounds.width/2+50,y:65+100*2+5*2,100,height:100)
     self.view.addSubview(view7)
        
view8.frame = CGRect(x:self.view.bounds.width/2+50,y:65+100*3+5*3,100,height:100)
     self.view.addSubview(view8)

2、滑动手势（快速滑动），可以添加多个手势绑定同一事件

//滑动手势
let swipeup = UISwipeGestureRecognizer()
swipeup.addTarget(self, action: #selector(hswipe(recognizer:)))
swipeup.direction = .up
view1.addGestureRecognizer(swipeup)
        
let swipedown = UISwipeGestureRecognizer()
swipedown.addTarget(self, action: #selector(hswipe(recognizer:)))
swipedown.direction = .down
view1.addGestureRecognizer(swipedown)
        
let swipeleft = UISwipeGestureRecognizer()
swipeleft.addTarget(self, action: #selector(hswipe(recognizer:)))
swipeleft.direction = .left
view1.addGestureRecognizer(swipeleft)
        
let swiperight = UISwipeGestureRecognizer()
swiperight.addTarget(self, action: #selector(hswipe(recognizer:)))
swiperight.direction = .right
view1.addGestureRecognizer(swiperight)       

实现方法：

func hswipe(recognizer:UISwipeGestureRecognizer) {
        print("swipe ok")
        
        if recognizer.direction == .up {
            print("向上滑动")
        }else if recognizer.direction == .down
        {
            print("向下滑动")
        }
        
        let point = recognizer.location(in: view1)
        
        print("(point.x)--(point.y)")
        
        self.navigationController?.pushViewController(mySecondViewController(), animated: true)
        
    }

3、轻点手势（点击）

   （1）可以通过numberOfTouchesRequired属性设置触摸点数，比如设置2表示必须两个手指触摸时才会触发

   （2）通过numberOfTapsRequired属性设置点击次数，单击设置为1，双击设置为2

   （3）如果一个控件既监听了单击事件也监听了双击事件，默认当双击事件触发的时候也同时会触发单击事件。

           如果想双击时不触发单击，需要通过     requireGestureRecognizerToFail进行设置

//单击监听
let tapsingle = UITapGestureRecognizer()
tapsingle.addTarget(self, action: #selector(hsswipe1))
tapsingle.numberOfTapsRequired = 1
tapsingle.numberOfTouchesRequired = 1
view3.addGestureRecognizer(tapsingle)
        
//双击手势
let tapDouble = UITapGestureRecognizer()
tapDouble.addTarget(self, action: #selector(hswipe2(recon:)))
tapDouble.numberOfTapsRequired = 2
tapDouble.numberOfTouchesRequired = 1
view4.addGestureRecognizer(tapDouble)

实现方法：

func hsswipe1()
    {
        print("点击")
        self.navigationController?.pushViewController(mySecondViewController(), animated: true)
    }
    
    func hswipe2(recon:UISwipeGestureRecognizer)
    {
        print("双击")
        
    }

4、捏合手势

//捏合手势
        let pinchTap = UIPinchGestureRecognizer()
        pinchTap.addTarget(self, action: #selector(hswipe3(recon:)))
        view5.addGestureRecognizer(pinchTap)

实现方法：

func hswipe3(recon:UIPinchGestureRecognizer)
    {
        print(recon.scale)
    }

5、旋转手势

//旋转手势
let rotation = UIRotationGestureRecognizer()
rotation.addTarget(self, action: #selector(hswipe4(recon:)))
view6.addGestureRecognizer(rotation)

实现方法：

func hswipe4(recon:UIRotationGestureRecognizer)
{
    print(recon.rotation)
}

6、拖动手势

//拖动手势
let panGap = UIPanGestureRecognizer()
panGap.addTarget(self, action: #selector(hswipe5(recon:)))
panGap.maximumNumberOfTouches = 1
view7.addGestureRecognizer(panGap)

实现方法：

func hswipe5(recon:UISwipeGestureRecognizer)
{
    let point = recon.location(in: view7)
        
    view7.center = point
}

7、长按手势

//长按手势
let longGap = UILongPressGestureRecognizer()
longGap.addTarget(self, action: #selector(hswipe6(recon:)))
view8.addGestureRecognizer(longGap)

实现方法：

func hswipe6(recon:UISwipeGestureRecognizer)
{
    if recon.state == .began {
        print("长按响应开始")
    }else
    {
        print("长按响应结束")
    }
 }
     

 8、从左侧滑动

//从左侧边缘划算
let swipe1 = UIScreenEdgePanGestureRecognizer()
swipe1.addTarget(self, action: #selector(haswipe(recon:)))
swipe1.edges = .left
view2.addGestureRecognizer(swipe1)

实现方法：

func haswipe(recon:UISwipeGestureRecognizer)
    {
        print("从左边边缘开始滑动")
        
        let point = recon.location(in: view2)
        
        print("(point.x)--(point.y)")
        
    }