一、查找控件
UIApplication -> UIWindow -> UIViewController ->UIView ->AVView
二、响应事件（反过来）
AVView ->UIView -> UIViewController -> UIWindow -> UIApplication
响应者链
/*
*注释:
1.自定义手势、
2.隐藏键盘
*/
//触摸开始
-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
NSLog(@"触摸开始");
UITouch *touch = [touches anyObject];
CGPoint point = [touch locationInView:self.view];
}
//触摸结束
-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
NSLog(@"触摸结束");
}
//触摸移动
-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
NSLog(@"触摸移动");
}
//触摸取消
-(void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
{
NSLog(@"触摸取消");
}
