将触摸事件从 UIScrollview 传递到 UICollectionView

Question

我有一个使用自定义 UICollectionViewCell 的 UICollectionView，它又包含包含 UIImageView 的 UIScrollView。

UIScrollView 附加了几个手势识别器（点击、双击）。我使用 UIScrollView 来放大图像。

问题是我能够在 UICollectionView 中接收触摸事件的唯一方法是禁用 UIScrollView 中的用户交互。尽管如此，UICollectionView 正在滚动，所以显然 UIScrollView 上的一些手势正在传递给父 UICollectionView）

我通过在 UIScrollView（自定义类）中添加这些方法尝试了另一种解决方案

@interface MyScrollView : UIScrollView

@end

@implentation MyScrollView
-(void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
    [[self nextResponder] touchesEnded:touches withEvent:event];
}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [[self nextResponder] touchesBegan:touches withEvent:event];
}

-(void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
    [[self nextResponder] touchesCancelled:touches withEvent:event];
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    [[self nextResponder] touchesMoved:touches withEvent:event];
}
@end

这有助于让 collectionview 接收触摸，但是当在滚动视图中向上滑动时，collectionview 将停止接收未来的触摸......

传递触摸事件（单击/双击）的正确方法是什么？

Answer 1

你实现gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer:了吗？

请看这里：Multiple Gestures for UIGestureRecognizers (iPhone, Cocos2d)

Answer 2

我有这个确切的设置，这就是我所做的

1. 我在图像视图中添加了一个触摸手势

   UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(bannerTapped:)];
   singleTap.numberOfTapsRequired = 1;
   singleTap.numberOfTouchesRequired = 1;
   cell.conversationImageView.tag = indexPath.row;
   [cell.conversationImageView addGestureRecognizer:singleTap];
   [cell.conversationImageView setUserInteractionEnabled:YES];
   

2. 然后我添加了这个

   - (void)bannerTapped:(UIGestureRecognizer *)gestureRecognizer {
       NSLog(@"%@", [gestureRecognizer view]);
       NSLog(@"the tag is %d", [gestureRecognizer view].tag);
   
       //do something here based on the tag which tells me what row I'm in
   }
   

希望这对你有用