// 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 = true
label.textAlignment = .Center;
// 添加手势
let panRecognizer = UIPanGestureRecognizer(target: self, action: Selector("panClick:"))
label.userInteractionEnabled = true
label.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 = true
label.textAlignment = .Center;
// 添加手势
let pinchRecognizer = UIPinchGestureRecognizer(target: self, action: Selector("pinchClick:"))
label.userInteractionEnabled = true
label.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 = true
label.textAlignment = .Center;
// 添加手势
let rotationRecognizer = UIRotationGestureRecognizer(target: self, action: Selector("ratotionClick:"))
label.userInteractionEnabled = true
label.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
}
}
