}
// 否则，返回默认处理
return [super hitTest:point withEvent:event];
}
这样，当触碰点是在ButtonA上时，则touch消息就被拦截在ViewA上，ViewB就收不到了。然后ButtonA就收到touch消息，会触发onClick方法。
需求2的实现，上面说到响应链，ViewB只要override掉touches系列的方法，然后在自己处理完后，将消息传递给下一个响应者（即父View即ViewA）。
代码如下：在ViewB代码里
复制代码#pragma mark - touches
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"B - touchesBeagan..");
// 把事件传递下去给父View或包含他的ViewController
[self.nextResponder touchesBegan:touches withEvent:event];
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"B - touchesCancelled..");
// 把事件传递下去给父View或包含他的ViewController
[self.nextResponder touchesBegan:touches withEvent:event];
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"B - touchesEnded..");
// 把事件传递下去给父View或包含他的ViewController
[self.nextResponder touchesBegan:touches withEvent:event];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"B - touchesMoved..");
// 把事件传递下去给父View或包含他的ViewController
[self.nextResponder touchesBegan:touches withEvent:event];
}
然后，在ViewA上就可以接收到touches消息，在ViewA上写：
复制代码
#pragma mark - touches
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"A - touchesBeagan..");
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"A - touchesCancelled..");
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
NSLog(@"A - touchesEnded..");
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
