Swift中实现点击、双击、捏、旋转、拖动、划动、长按手势的类和方法介绍

1.UITapGestureRecognizer 点击/双击手势

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) 

var pinchGesture = UIPinchGestureRecognizer(target: self, action: "handlePinchGesture:")  

self.view.addGestureRecognizer(pinchGesture)

var rotateGesture = UIRotationGestureRecognizer(target: self, action: "handleRotateGesture:")  

 self.view.addGestureRecognizer(rotateGesture)  

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

 self.view.addGestureRecognizer(panGesture)  

var swipeGesture = UISwipeGestureRecognizer(target: self, action: "handleSwipeGesture:")  

swipeGesture.direction = UISwipeGestureRecognizerDirection.Left //不设置是右  

self.view.addGestureRecognizer(swipeGesture)

   var longpressGesutre = UILongPressGestureRecognizer(target: self, action: "handleLongpressGesture:")  

    //长按时间  

    // longpressGesutre.minimumPressDuration 

    //所需触摸次数 

    /// longpressGesutre.numberOfTouchesRequired  

    self.view.addGestureRecognizer(longpressGesutre)  

UIGestureRecognizerState 枚举定义如下

enum UIGestureRecognizerState : Int {
    case Possible // the recognizer has not yet recognized its gesture, but may be evaluating touch events. this is the default state
    case Began // the recognizer has received touches recognized as the gesture. the action method will be called at the next turn of the run loop

    case Changed // the recognizer has received touches recognized as a change to the gesture. the action method will be called at the next turn of the run loop

    case Ended // the recognizer has received touches recognized as the end of the gesture. the action method will be called at the next turn of the run loop and the recognizer will be reset to UIGestureRecognizerStatePossible

    case Cancelled // the recognizer has received touches resulting in the cancellation of the gesture. the action method will be called at the next turn of the run loop. the recognizer will be reset to UIGestureRecognizerStatePossible
    case Failed // the recognizer has received a touch sequence that can not be recognized as the gesture. the action method will not be called and the recognizer will be reset to UIGestureRecognizerStatePossible

}