ios - 如何从 TableView 中自定义单元格中的标签获取文本

Question

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = self.tbl_vw.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)as!cuscellTableViewCell

    cell.txt_lbl.text = self.section[indexPath.row];
    cell.sel_btn.addTarget(self, action: #selector(self.switchChanged), forControlEvents: .ValueChanged)

    return cell

}



func switchChanged(sender: AnyObject) {
    let switchControl: UISwitch = sender as! UISwitch
    print("The switch is \(switchControl.on ? "ON" : "OFF")")

    if switchControl.on {
        print("The switch is on lets martch")
    }
}

我在表格 View 的自定义单元格中有一个开关和一个标签。当我打开开关时，我需要获取标签中的文本，任何人都可以帮助实现这一点。

Answer 1

使用 UISwitch 的标签属性来存储位置，并在您的处理程序中使用它来获取实际的文本表单部分数组。

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = self.tbl_vw.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)as!cuscellTableViewCell

    cell.txt_lbl.text = self.section[indexPath.row];

    cell.sel_btn.tag = indexPath.row

    cell.sel_btn.addTarget(self, action: #selector(self.switchChanged), forControlEvents: .ValueChanged)

    return cell

}



func switchChanged(sender: AnyObject) 
{
  let switchControl: UISwitch = sender as! UISwitch
  print("The switch is \(switchControl.on ? "ON" : "OFF")")

  let text = self.section[switchControl.tag]
  print(text)

  if switchControl.on 
  {
        print("The switch is on lets martch")
  }
} 

如果您有多个包含多行的部分，您可以使用字典并存储一个元组。

var items = [Int:(Int,Int)]()
...

func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = self.tbl_vw.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)as!cuscellTableViewCell

    cell.txt_lbl.text = self.section[indexPath.row];
    cell.sel_btn.tag = indexPath.row

    let tuple = (section: indexPath.section, row: indexPath.row)
    self.items[cell.sel_btn.hashValue] = tuple
    cell.sel_btn.addTarget(self, action: #selector(self.switchChanged), forControlEvents: .ValueChanged)

    return cell

}

func switchChanged(sender: AnyObject) 
    {
      let switchControl: UISwitch = sender as! UISwitch
      print("The switch is \(switchControl.on ? "ON" : "OFF")")

      let tuple = self.items[switchControl.hashValue]
      print(tuple.0)  // this is the section
      print(tuple.1) // this is the row

      if switchControl.on 
      {
            print("The switch is on lets martch")
      }
    }