IOS 开发之swift中手势的实例详解

// 点击let label = UILabel(frame: CGRectMake(10.0, 10.0, (self.view.frame.size.width - 10.0 * 2), 60.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-单指单击手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let tapRecognizer = UITapGestureRecognizer(target: self, action: Selector("tapClick:"))tapRecognizer.numberOfTapsRequired = 1tapRecognizer.numberOfTouchesRequired = 1label.userInteractionEnabled = truelabel.addGestureRecognizer(tapRecognizer)// 手势响应方法func tapClick(recognizer:UITapGestureRecognizer){    let label:UILabel = recognizer.view as! UILabel    label.textColor = UIColor.redColor()}

// 滑动let label = UILabel(frame: CGRectMake(10.0, 10.0, (self.view.frame.size.width - 10.0 * 2), 60.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-左滑手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let swipeLeftRecognizer = UISwipeGestureRecognizer(target: self, action: Selector("swipeLeftClick:"))swipeLeftRecognizer.direction = .LeftswipeLeftRecognizer.numberOfTouchesRequired = 1label.userInteractionEnabled = truelabel.addGestureRecognizer(swipeLeftRecognizer)// 手势响应方法func swipeLeftClick(recognizer:UISwipeGestureRecognizer){    let label = recognizer.view    label!.backgroundColor = UIColor.orangeColor()}

// 拖动let label = UILabel(frame: CGRectMake(10.0, 10.0, 100.0, 100.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-拖动手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let panRecognizer = UIPanGestureRecognizer(target: self, action: Selector("panClick:"))label.userInteractionEnabled = truelabel.addGestureRecognizer(panRecognizer)var pointValue:CGPoint! = CGPointZero // 移动// 手势响应方法func panClick(recognizer:UIPanGestureRecognizer){    let label:UILabel = recognizer.view as! UILabel    let point = recognizer.translationInView(label)    print("pan point = /(point)")    // 移动    label.transform = CGAffineTransformMakeTranslation(point.x + self.pointValue.x, point.y + self.pointValue.y)    if recognizer.state == .Began    {      label.backgroundColor = UIColor.yellowColor()      self.view.bringSubviewToFront(label)    }    else if recognizer.state == .Ended    {      label.backgroundColor = UIColor.lightGrayColor()      self.pointValue.x += point.x      self.pointValue.y += point.y    }}

// 缩放let label = UILabel(frame: CGRectMake(10.0, 10.0, 200.0, 200.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-捏合手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let pinchRecognizer = UIPinchGestureRecognizer(target: self, action: Selector("pinchClick:"))label.userInteractionEnabled = truelabel.addGestureRecognizer(pinchRecognizer)// 手势响应方法var scaleValue:CGFloat! = 1.0 // 缩放func pinchClick(recognizer:UIPinchGestureRecognizer){    let label:UILabel = recognizer.view as! UILabel    let scale = recognizer.scale;    if scale > 1.0    {      // 放大      label.transform = CGAffineTransformMakeScale(self.scaleValue + scale - 1.0, self.scaleValue + scale - 1.0)    }    else    {      // 缩小      label.transform = CGAffineTransformMakeScale(self.scaleValue * scale, self.scaleValue * scale)    }    if recognizer.state == .Began    {      label.backgroundColor = UIColor.greenColor()      self.view.bringSubviewToFront(label)    }    else if recognizer.state == .Ended    {      label.backgroundColor = UIColor.lightGrayColor()      if scale > 1.0      {        self.scaleValue = self.scaleValue + scale - 1.0;      }      else      {        self.scaleValue = self.scaleValue * scale      }    }}

// 旋转let label = UILabel(frame: CGRectMake(10.0, 10.0, 200.0, 200.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-旋转手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let rotationRecognizer = UIRotationGestureRecognizer(target: self, action: Selector("ratotionClick:"))label.userInteractionEnabled = truelabel.addGestureRecognizer(rotationRecognizer)var rotationValue:CGFloat! = 1.0 // 旋转// 手势响应方法func ratotionClick(recognizer:UIRotationGestureRecognizer){    let label:UILabel = recognizer.view as! UILabel    let rotation = recognizer.rotation    label.transform = CGAffineTransformMakeRotation(rotation + self.rotationValue)    if recognizer.state == .Began    {      label.backgroundColor = UIColor.greenColor()      self.view.bringSubviewToFront(label)    }    else if recognizer.state == .Ended    {      label.backgroundColor = UIColor.lightGrayColor()      self.rotationValue = self.rotationValue + rotation    }}

// 长按let label = UILabel(frame: CGRectMake(10.0, 10.0, (self.view.frame.size.width - 10.0 * 2), 60.0))self.view.addSubview(label)label.backgroundColor = UIColor.lightGrayColor()label.text = "手势操作-长按手势";label.adjustsFontSizeToFitWidth = truelabel.textAlignment = .Center;// 添加手势let pressRecognizer = UILongPressGestureRecognizer(target: self, action: Selector("pressClick:"))    pressRecognizer.minimumPressDuration = 3.0    label.userInteractionEnabled = true    label.addGestureRecognizer(pressRecognizer)// 手势响应方法func pressClick(recognizer:UILongPressGestureRecognizer){    let label:UILabel = recognizer.view as! UILabel    if recognizer.state == .Began    {      let alertView = UIAlertView(title: nil, message: "长按响应", delegate: nil, cancelButtonTitle: "知道了")      alertView.show()      label.backgroundColor = UIColor.orangeColor()      self.view.bringSubviewToFront(label)    }    else if recognizer.state == .Ended    {      label.backgroundColor = UIColor.lightGrayColor()    }}