imageVIew.userInteractionEnabled=YES;
//图片view需要开启它的事件响应属性。其他的view默认是开启的。
//点击手势时间
//用来识别手势时间的
UITapGestureRecognizer* tapOne = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tapOneAct:)];
//手势识别类型表示几次点击时触发
tapOne.numberOfTapsRequired=2;
//表示几个手指点击时触发时事件
tapOne.numberOfTouchesRequired=1; //默认为1
[imageVIewaddGestureRecognizer:tapOne];
UITapGestureRecognizer* tapTwo = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(tapTwoAct:)];
tapTwo.numberOfTapsRequired=1;
[imageVIewaddGestureRecognizer:tapTwo];
//表示当单击操作遇到双击操作时失效
[tapTworequireGestureRecognizerToFail:tapOne];
//事件中拿到触发事件的view
UIImageView* imageView = (UIImageView*) pinch.view;
