1.UITapGestureRecognizer 的delegate:
1)gesture locationInView一个点击在view的坐标;点击如果在view的外面,就会出现负值;
2).delegate控制一个事件是否识别等。gestureRecognizerShouldBegin
2.ConvertView,ConvertPoint;
3.UIView继承了UIResponder:
touchesBegan/Move/End/Cancel;
PressesBegan/Move/End/Cancel;
MotionBegan/Move/End/Cancel;
4.UITouch,UIEvent,UIPress;
1)Event是个集合的概念,touch,motion是子项;
EventType:touch,motion,press,remote;
2)touch可以得到点击的位置,点击的view或windows;
5.UIDevice:
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