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，如果我的问题无法解决，我只需使用按钮并将图像放在上面即可。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。我使用UIImageView而不是UIButton尝试了确切的答案，我收到了此错误

＆＃34;致命错误：在打开一个可选值＆＃34;时意外发现nil。

cell.imagePosted是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

这可能会对你有帮助，

向UITapGestureRecognizer添加UIImageView 您可以将indexpath.row存储在UIImageView的代码属性中，并在UITapGestureRecognizer事件

上访问该代码

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);
}

Answer 2

您可以使用单元格中的imageViewInCellTapped(cell:YourCellType)和委托属性等方法创建协议。在cellForRowAtIndexPath中，将控制器设置为每个单元的委托，并从协议中实现该方法。当您的单元格中出现某些事情（如按钮或图像被点击）时，您可以调用delegate?.imageViewInCellTapped(self)其中self是单元格，然后在控制器中实现此方法，您可以使用tableView的indexPathForCell方法获取索引。

Answer 3

如果有人感兴趣的话，这里是Madan的代码：

    func imageTapped(gestureRecognizer: UITapGestureRecognizer) {

    var view: UIView!
    var loc: CGPoint!
    view = gestureRecognizer.view
    loc = gestureRecognizer.locationInView(view)

    var indexPath: NSInteger!

    indexPath = (view.hitTest(loc, withEvent: nil)?.tag)!

    print(indexPath)

}

Answer 4

希望此代码有助于获取tapped cell swift 3的索引路径：

  func nameTapped(_ sender:UITapGestureRecognizer)
{
    var pointVAlue = CGPoint()
    pointVAlue = sender.location(in: infoTable)

    var indexPath = IndexPath()
    indexPath = infoTable.indexPathForRow(at: pointVAlue)!

    print(indexPath.row)

   /* if indexPath != nil {

        let userEnt  = ratingArray.object(at: indexPath.row)as! RateEntity

        let detailVc = AssociateDetailViewController()          

        if ((userEnt.userId as String).isEmpty == false )
        {
            detailVc.m_otherUserId = userEnt.userId as String
            self.navController!.pushViewController(detailVc, animated: true)
        }
    }*/

}

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

4 个答案: