touches,motion触摸事件响应

//触摸事件响应需要重写方法

 1 // 触摸时触发该方法(消息发送)
 2 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
 3     UITouch *touch = [touches anyObject];
 4     CGPoint point = [touch locationInView:self.rootView.touchView];//locationInView:得到当前点击下在指定视图中位置的坐标
 5     NSLog(@"触摸开始:%.2f,%.2f",point.x,point.y);
 6 }
 7 //但触摸移动时触发该事件
 8 - (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
 9
10     UITouch *touch = [touches anyObject];
11     CGPoint point1 = [touch locationInView:self.rootView.touchView];
12     CGPoint point2 = [touch previousLocationInView:self.rootView.touchView];//previouslocationInView:得到当前点的前一个点在指定视图中位置的坐标
13 }
14 // 触摸结束时触发该方法(消息发送)
15 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
16     NSLog(@"触摸结束");
17 }
18 //发生其他情况,如来电话或意外退出时,执行该方法
19 - (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
20
21 }

//手机摇一摇实现要重写方法

 1 //开始时调用
 2 - (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event{
 3     NSLog(@"摇一摇开始");
 4 }
 5 //结束时调用
 6 - (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event{
 7     NSLog(@"摇一摇结束");
 8 }
 9 //意外情况调用
10 - (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event{
11     NSLog(@"意外退出");
12 }