IOS多點觸控與手勢識別

標籤：

1 點擊-UITapGestureRecognizer

    override func viewDidLoad() {        super.viewDidLoad()                       let rect=CGRect(x:80,y:200,width:200,height:200);        var view1 = UIView(frame: rect)        view1.backgroundColor = UIColor.redColor()        self.view.addSubview(view1)                //1,建立手勢辨識器        var gesture = UITapGestureRecognizer(target: self, action: "viewAction:")#warning 如果想要辨識器能夠識別多種觸控，例如1點和2點，那就要建立2個UITapGestureRecognizer        gesture.numberOfTapsRequired = 2    //點擊次數       // gesture.numberOfTouchesRequired = 2 //多點觸摸                //2,關聯辨識器到視圖        view1.addGestureRecognizer(gesture)            }    //3，手勢引用的動作    func viewAction(sender:UITapGestureRecognizer){        //獲得點擊處的位置        var point:CGPoint = sender.locationInView(self.view)        println("\(point)")        println("clicked")    }

2, 放大縮放UIPinchGestureRecognizer

    override func viewDidLoad() {        super.viewDidLoad()                //1,建立手勢辨識器        var gesture = UIPinchGestureRecognizer(target: self, action: "viewAction:")                //2,關聯辨識器到視圖        view1.addGestureRecognizer(gesture)            }    //3，手勢引用的動作    func viewAction(sender:UITapGestureRecognizer){                var _height = view1.bounds.height        var _width  = view1.bounds.width               view1.bounds.size = CGSize(width: _width * sender.scale,                                        height: _height * sender.scale)    }

IOS多點觸控與手勢識別