User Input not working on Text Field added program

问题:

I am trying to add a user-editable text field. I was able to get the text field to appear for each different cell of the table, but I wasn't able to get users to input. It doesn't show the keyboard. I have user interaction enabled. This is my code. Please ignore the commented out parts.

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "transportCell", for: indexPath)

  //self.tableView.rowHeight = 100



    //var a = Array(words[indexPath.row])

    //a.shuffle()

    //var shuffledWord = String(a)


    //shuffledWord = shuffledWord.lowercased()

    let sampleTextField =  UITextField(frame: CGRect(x: 20, y: 100, width: 300, height: 40))
    sampleTextField.placeholder = "Enter text here"
    sampleTextField.font = UIFont.systemFont(ofSize: 15)
    sampleTextField.borderStyle = UITextBorderStyle.roundedRect
    sampleTextField.autocorrectionType = UITextAutocorrectionType.no
    sampleTextField.keyboardType = UIKeyboardType.alphabet
    sampleTextField.returnKeyType = UIReturnKeyType.done
    sampleTextField.clearButtonMode = UITextFieldViewMode.whileEditing;
    sampleTextField.contentVerticalAlignment = UIControlContentVerticalAlignment.center
    sampleTextField.delegate = self as? UITextFieldDelegate


   // cell.textLabel?.text = shuffledWord

   // var imageName = UIImage(named: words[indexPath.row])
    //cell.imageView?.image = imageName

    return cell
}

If possible could you also tell me how to store the user's input as a variable?

Thanks in advance

回答1:

As @rmaddy said that first, you have to add that text field to your cell for that ...

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {......

  sampleTextField.text = arrTextFieldVal[indexPath.item]//this array for stroing the user input values..
  sampleTextField.tag = indexPath.item // u will access the text field with this value 
  cell.addSubview(sampleTextField)........}

and second, you can store user values by manage an array of string like ...

 func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return arrTextFieldVal.count }

and take values from text field delegate like this...

 func textFieldDidEndEditing(_ textField: UITextField) {
    arrTextFieldVal[textField.tag] = textField.text!
}

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return true
}

回答2:

Please refer to this answer see if it helps you.

• Also, please check that you are not resigning keyboard on textFieldShouldBeginEditing, shouldChangeCharactersIn or textFieldShouldBeginEditing delegates of textfield.