How to clear the text field automatically

I have a question about UITextField() in Swift. How can I clear the text in the text field when I click on it?

My textField.text = "0". I want to automatically remove the number "0" when I click on the text field:

import UIKit class ViewController: UIViewController, UITextFieldDelegate { @IBOutlet var lbltext: UILabel! @IBOutlet var scrolview1: UIScrollView! @IBOutlet var fi: UITextField! @IBOutlet var scrolviewus: UIScrollView! @IBOutlet var counterLabel: UILabel! override func viewDidLoad() { super.viewDidLoad() fi.text = "0" } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } @IBAction func button(sender: AnyObject) { lbltext.numberOfLines = 0 lbltext.text! = lbltext.text! + "\n" + fi.text! + "\n" + "--- " } } 

6 Answers

Use this method,

If you want to manually clear the text field use this code:

textField.text = "" 

If you want the text field to empty when you begin editing, use the delegate method below:

func textFieldDidBeginEditing(textField: UITextField) { textField.text = "" } 

If you are using multiple text fields, use the method below:

func textFieldDidBeginEditing(textField: UITextField) { if (textField == oneTextField) { textField.text = "" } else if (textField == anotherTextField) { // Perform any other operation } } 

You can easily clear the TextField in swift

emailTextField.text?.removeAll() passwordTextField.text?.removeAll() confirmPasswordTextField.text?.removeAll() 

Simply use textFieldDidBeginEditing method to handle focus change, and clear text.

func textFieldDidBeginEditing(textField: UITextField) { textField.text = "" } 

func textFieldDidBeginEditing(textField: UITextField) { if fi.text == "0" { fi.text = "" } } 

There are a couple of ways you can solve this problem, depending on what you're looking for. The first is to use a placeholder instead of setting the text to 0. A placeholder will disappear whenever the user starts typing and reappear if they type nothing in:

fi.placeholder = "0" 

if you want the 0 to be the value and not just a placeholder, there are lots of built in methods to track editing/entering/returning/etc of a textfield. This does require implementation of the UITextFieldDelegate however, which it appears you have already done.

var isFirstTime = true override viewDidLoad() { super.viewDidLoad() fi.delegate = self } func textViewDidBeginEditing(textView: UITextView) { isFirstTime = false if fi.text == "0" { fi.text = "" } } func textViewDidEndEditing(textView: UITextView) { if fi.text.isEmpty { fi.text = "0" isFirstTime = true } } 

The is first time var is only present so that the user can type 0 if they choose. If the user should not be able to type 0, then it may be removed.

func textFieldDidBeginEditing(textField: UITextField) { fi.text = "" } func textFieldDidEndEdition(textField: UITextField) { if fi.text isEqualToString:@"" { fi.text = @"" } }