单击UITableView

Question

我在表格视图单元格中有一个标签。

在检索到正确的indexPath后点击标签我想要转到另一个视图控制器。

我在标签上添加了gestureRecognizer。单击标签时，它返回错误的indexPath，它不会返回标签所在单元格的索引路径。

我该如何解决这个问题。任何帮助将不胜感激。谢谢

以下是我的代码

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
    {
        cell = tableView.dequeueReusableCell(withIdentifier: "ViewControllerCell", for: indexPath) as! TableCell

        cell.name.text = feeds[indexPath.row].name

        nameClicked()
        return cell
    }


 func nameClicked(){
        cell.name.isUserInteractionEnabled = true
        let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(TrendViewController.handleTap(gestureRecognizer:)))
        cell.name.addGestureRecognizer(gestureRecognizer)

    }


    func handleTap(gestureRecognizer: UIGestureRecognizer) {

        var touchPoint = cell.name.convert(CGPoint.zero, to: self.tableView)
        var clickedLabelIndexPath = tableView.indexPathForRow(at: touchPoint)!

        nameFromView = feeds[clickedLabelIndexPath.row].name
        print("IndexPath at touch",clickedLabelIndexPath)

        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let vc = storyboard.instantiateViewController(withIdentifier: "profile") as! ProfileViewController

        vc.clickedLabelIndexPath = clickedLabelIndexPath
        vc.nameFromView = feeds[clickedLabelIndexPath.row].name

        self.navigationController?.pushViewController(vc, animated: true)
    }

Answer 1

您已在类中声明cell作为实例属性，因此您要将手势添加到同一单元格的标签中。因此，使用dequeueReusableCell创建新单元格，并通过添加单元格类型的参数来更改方法nameClicked。

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    //create new cell
    let cell = tableView.dequeueReusableCell(withIdentifier: "ViewControllerCell", for: indexPath) as! TableCell
    cell.name.text = feeds[indexPath.row].name
    nameClicked(cell)
    return cell
}

func nameClicked(_ cell: TableCell){
    cell.name.isUserInteractionEnabled = true
    let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(TrendViewController.handleTap(gestureRecognizer:)))
    cell.name.addGestureRecognizer(gestureRecognizer)
}

现在更改您的handleTap方法，以获得正确的indexPath。

func handleTap(_ gestureRecognizer: UIGestureRecognizer) {
    let point = self.tableView.convert(CGPoint.zero, from: gestureRecognizer.view!)
    if let indexPath = self. tableView.indexPathForRow(at: point) {
        print("\(indexPath.section) \(indexPath.row)")
        //Add your code here
    }
}

注意：如果您的单元格只有单个单元格，那么如果您使用didSelectRowAt方法而不是向标签添加手势，那么它就会变得更糟。

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    print(indexPath.row)
}

Answer 2

也许你应该制定检查细胞是否被触及的条件？

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
   let cell = tableView.dequeueReusableCell(withIdentifier: "ViewControllerCell", for: indexPath) as! TableCell
   if cell.isTouched { 
      cell.setTouched
   }
   else { 
      cell.setNoTouched
   }

   return cell
}