swift 中手势的使用

/**点击手势*/func tapGestureDemo() {    //建立手势识别器    let gesture = UITapGestureRecognizer(target: self, action: "viewTap:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**缩放手势*/func pinchGestureDemo() {    //建立手势识别器    let gesture = UIPinchGestureRecognizer(target: self, action: "viewPinch:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**旋转手势*/func rotationGestureDemo() {    //建立手势识别器    let gesture = UIRotationGestureRecognizer(target: self, action: "viewRotation:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**滑动手势*/func swipeGestureDemo() {    //建立手势识别器    let gesture = UISwipeGestureRecognizer(target: self, action: "viewSwipe:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**平移手势*/func panGestureDemo() {    //建立手势识别器    let gesture = UIPanGestureRecognizer(target: self, action: "viewPan:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**长按手势*/func LongPressGestureDemo() {    //建立手势识别器    let gesture = UILongPressGestureRecognizer(target: self, action: "viewLongPress:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}/**自定义手势*/func custonGestureDemo() {    //建立手势识别器    let gesture = CustomGestureRecognizer(target: self, action: "viewCustom:")    //附加识别器到视图    self.view1.addGestureRecognizer(gesture)}//-----------------------手势action事件---------------------------/**点击事件*/@IBAction func viewTap(sender: UITapGestureRecognizer) {    print("clicked...")}/**缩放事件*/func viewPinch(sender: UIPinchGestureRecognizer) {    print("pinch...")    let _width = view1.bounds.width    let _height = view1.bounds.height    view1.bounds.size = CGSize(width: _width * sender.scale, height: _height * sender.scale)}/**旋转事件*/func viewRotation(sender: UIRotationGestureRecognizer) {    view1.transform = CGAffineTransformMakeRotation(sender.rotation)}/**滑动事件*/var offsetX: CGFloat = 0func viewSwipe(sender: UISwipeGestureRecognizer) {    if sender.direction == UISwipeGestureRecognizerDirection.Right {        //每次向右平移20        offsetX += 20        view1.transform = CGAffineTransformMakeTranslation(offsetX, 0)    }}/**平移事件*/func viewPan(sender: UIPanGestureRecognizer) {    let _transX = sender.translationInView(view1).x    let _transY = sender.translationInView(view1).y    view1.transform = CGAffineTransformMakeTranslation(_transX, _transY)}/**长按事件*/func viewLongPress(sender: UILongPressGestureRecognizer) {    print("long pressed....")}func viewCustom(sender: CustomGestureRecognizer) {    print("custom gesture...")}