IOS多点触控与手势识别

1 点击-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,建立手势识别器
        var gesture = UITapGestureRecognizer(target: self, action: "viewAction:")
#warning 如果想要识别器能够识别多种触控，例如1点和2点，那就要建立2个UITapGestureRecognizer
        gesture.numberOfTapsRequired = 2    //点击次数
       // gesture.numberOfTouchesRequired = 2 //多点触摸
        
        //2,关联识别器到视图
        view1.addGestureRecognizer(gesture)
        
    }
    //3，手势引用的动作
    func viewAction(sender:UITapGestureRecognizer){
        //获得点击处的位置
        var point:CGPoint = sender.locationInView(self.view)
        println("\(point)")
        println("clicked")
    }

2, 放大缩放UIPinchGestureRecognizer

    override func viewDidLoad() {
        super.viewDidLoad()
        
        //1,建立手势识别器
        var gesture = UIPinchGestureRecognizer(target: self, action: "viewAction:")
        
        //2,关联识别器到视图
        view1.addGestureRecognizer(gesture)
        
    }
    //3，手势引用的动作
    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多点触控与手势识别

原文：http://my.oschina.net/u/2346786/blog/497271