初级_手势识别

双击

var tapGesture = UITapGestureRecognizer(target: self, action: "handleTapGesture:")  
//设置手势点击数,双击：点2下  
tapGesture.numberOfTapsRequired = 2  
self.view.addGestureRecognizer(tapGesture)

func handleTapGesture(sender: UITapGestureRecognizer){
}

捏

//手势为捏的姿势:按住option按钮配合鼠标来做这个动作在虚拟器上  
var pinchGesture = UIPinchGestureRecognizer(target: self, action: "handlePinchGesture:")  
self.view.addGestureRecognizer(pinchGesture) 

//捏手势做缩放比例
func handlePinchGesture(sender: UIPinchGestureRecognizer){ 
if sender.scale > 1{  
     //图片放大
}else{  
     //缩小
}
}

旋转

//旋转手势:按住option按钮配合鼠标来做这个动作在虚拟器上  
var rotateGesture = UIRotationGestureRecognizer(target: self, action: "handleRotateGesture:")  
self.view.addGestureRecognizer(rotateGesture)  

func handleRotateGesture(sender: UIRotationGestureRecognizer){  
//浮点类型，得到sender的旋转度数   
var rotation : CGFloat = sender.rotation  
}

拖

var panGesture = UIPanGestureRecognizer(target: self, action: "handlePanGesture:")  
self.view.addGestureRecognizer(panGesture)

func handlePanGesture(sender: UIPanGestureRecognizer){  
//得到拖的过程中的xy坐标  
var translation : CGPoint = sender.translationInView(imgView)  
}

划动

//右划  
var swipeGesture = UISwipeGestureRecognizer(target: self, action: "handleSwipeGesture:")  
self.view.addGestureRecognizer(swipeGesture)  
//左划  
var swipeLeftGesture = UISwipeGestureRecognizer(target: self, action: "handleSwipeGesture:")  
swipeLeftGesture.direction = UISwipeGestureRecognizerDirection.Left //不设置是右  
self.view.addGestureRecognizer(swipeLeftGesture)  

func handleSwipeGesture(sender: UISwipeGestureRecognizer){  
        //划动的方向  
        var direction = sender.direction  
        //判断是上下左右  
        switch (direction){  
        case UISwipeGestureRecognizerDirection.Left: 
             break  
        case UISwipeGestureRecognizerDirection.Right:
            break  
        default:  
            break; 
     }
}

长按

//长按手势  
var longpressGesutre = UILongPressGestureRecognizer(target: self, action: "handleLongpressGesture:")  
//最小长按时间为1秒  
longpressGesutre.minimumPressDuration = 1  
//允许像素的最大移动  
longpressGesutre.allowableMovement = 15  
//要识别的手势必须保持的手指数
longpressGesutre.numberOfTouchesRequired = 1  
self.view.addGestureRecognizer(longpressGesutre) 

func handleLongpressGesture(sender : UILongPressGestureRecognizer){  
        //手势状态，开始、结束、失败、取消...
        if sender.state == UIGestureRecognizerState.Began{ 
        } else if sender.state == UIGestureRecognizerState.Ended {
        }
}