ios - 当点击单元格中的 UIImageView 时如何获取indexpath.row？

Question

swift: how to get the indexpath.row when a button in a cell is tapped?

此链接是点击按钮时的答案，如果无法回答我的问题，我将只使用按钮并将图像放在上面。我只是想知道是否可以通过点击 UIImageView 而不是按钮来实现这一点。我用 UIImageView 而不是 UIButton 尝试了确切的答案，但我得到了这个错误

"fatal error: unexpectedly found nil while unwrapping an Optional value".

cell.imagePosted 是一个 UIImageView

let tapGR = UITapGestureRecognizer(target: self,action:Selector("imageTapped:"))
cell.imagePosted.userInteractionEnabled = true
cell.imagePosted.addGestureRecognizer(tapGR);

func imageTapped(img: AnyObject)
{
    if let imgView = img as? UIImageView {

        if let superView = imgView.superview {

            if let cell = superView.superview as? CellCustom {

                indexPath2 = self.tableView.indexPathForCell(cell)

            }      
       }       
   }

   print(indexPath2.row)       
}

Answer 1

这可能对你有帮助，

将 UITapGestureRecognizer 添加到 UIImageView您可以将 indexpath.row 存储在 UIImageView 的标记属性中，并在 UITapGestureRecognizer 事件

上访问该标记

例如( objective-C ):

    UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleImageTap:)];
    tap.cancelsTouchesInView = YES;
    tap.numberOfTapsRequired = 1;
    [cell.imageView addGestureRecognizer:tap];

    cell.imageView.tag = indexPath.row;

并获取indexpath.row

-(void)handleImageTap:(UITapGestureRecognizer *)gestureRecognizer{
    UIView* view = gestureRecognizer.view;
    CGPoint loc = [gestureRecognizer locationInView:view];
    NSInteger indexpath = [view hitTest:loc withEvent:nil].tag;
    NSLog(@"%ld",(long)indexpath);
}