如何从tableview单元格中检索文本字段值

3 回答

• 5

  我想你的tableView只有一个部分 . 然后你可以这样做

  func signInButtonTapped() {
          let indexpathForEmail = NSIndexPath(forRow: 0, inSection: 0)
          let emailCell = tableView.cellForRowAtIndexPath(indexpathForEmail)! as TextFieldCell
  
          let indexpathForPass = NSIndexPath(forRow: 1, inSection: 0)
          let passCell =  tableView.cellForRowAtIndexPath(indexpathForPass)! as TextFieldCell
  
          if emailCell.textField.placeholder!.isEmpty || passCell.textField.placeholder!.isEmpty {
  
              let alert = UIAlertController(title: "Alert", message: "all fields are required to be filled in", preferredStyle: .Alert)
              let action = UIAlertAction(title: "OK", style: .Default, handler: nil)
              alert.addAction(action)
              self.presentViewController(alert, animated: true, completion: nil)
          }
      }
  

  回复于 2024-05-03T22:54:59+08:00
• 1

  step-1

  在当前类中添加委托 UITextFieldDelegate

  class ViewController: UIViewController,UITextFieldDelegate
  

  step-2

  在 cellForRowAtIndexPath 上调用当前字段的委托并添加标记

  func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
      let cell = tableView.dequeueReusableCellWithIdentifier(cellID) as! TextFieldCell
  
      cell.label.text = loginOptions[indexPath.row]
      cell.textField.placeholder = loginOptions[indexPath.row] 
       // add the following lines
       cell.textField.delegate = self
       cell.textField.tag = indexPath.row
  
  
      return cell
  }
  

  Step-3

  拨打 UITextField Delegates

  func textFieldDidEndEditing(textField: UITextField) {
  print("TextField did end editing method called")
  
  if !textField.text.isEmpty // check textfield contains value or not
   {
    if textField.tag == 0
    {
    emailAddress = textField.text!
    }
    else
    {
     password = textField.text!
    }
   }
  
  func textFieldShouldReturn(textField: UITextField) -> Bool {
  
  textField.resignFirstResponder();
  return true;
  }
  
    func textFieldDidBeginEditing(textField: UITextField!) {     
       if textField.tag == 0
    {
    emailAddress = ""
    }
    else
    {
     password = ""
    }
  }
  

  Step-4

  如果 emailAddress & password 不包含通过错误的值，则称为使用您的函数

  func signInButtonTapped() {
  
      if emailAddress!.isEmpty || password!.isEmpty {
  
          let alert = UIAlertController(title: "Alert", message: "all fields are required to be filled in", preferredStyle: .Alert)
          let action = UIAlertAction(title: "OK", style: .Default, handler: nil)
          alert.addAction(action)
          self.presentViewController(alert, animated: true, completion: nil)
      }
  else
    {
     // continue your work
    }
  
  }
  

  回复于 2024-05-03T22:54:59+08:00
• 0

  func textFieldDidEndEditing(_ textField: UITextField) {
    var tf = textField
     repeat {tf = superView.tf!} while !(tf is UITableViewCell)
      let cell = tf as! TextFieldCell
      let indexPath = self.tableView.indexPath(for: cell)
  
      //do further customization with indexPath
       switch indexPath.row {
         case 0: //assign value of row one to your data model,
         case 1: //assign value of row two to your data model
         default: break
      }
  }
  

  回复于 2024-05-03T22:54:59+08:00