现在有一个问题，点击黄色子视图超出红色视图的区域的时候，事件没有响应。原因是事件传递默认是在红色父视图的坐标区域里面的，所以超出的部分不起作用。

解决问题的思路：重写红色父视图的- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event方法，当超出区域的适合返回黄色子视图。

@interface UIView2:UIView@end@implementation UIView2@end@interface UIView1:UIView@end@implementation UIView1- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{        if (![self pointInside:point withEvent:event]) {        for (UIView *view in self.subviews) {            CGPoint view2Point = [self convertPoint:point toView:view];            if ([view isKindOfClass:[UIView2 class]]&&CGRectContainsPoint(view.frame, view2Point)) {                return view;            }        }            }        return [super hitTest:point withEvent:event];}@end//    UIView1 *view1 = [UIView1 new];    view1.frame = CGRectMake(50, 100, 100, 100);    view1.backgroundColor = [UIColor redColor];    [self.view addSubview:view1];        UIView2 *view2 = [UIView2 new];    view2.frame = CGRectMake(10, 50, 100, 100);    view2.backgroundColor = [UIColor yellowColor];    [view1 addSubview:view2];  UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tap)];    [view2 addGestureRecognizer:tap];- (void)tap{    NSLog(@"点击了黄色的view");}复制代码