How to clear the text field automatically

Question

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" + "---  "
    }
 }

Possibly related: http://stackoverflow.com/questions/28530167/objective-c-auto-erase-nstextfield-string — l'L'l, May 07 '16 at 04:40
i am first time using swift and i don't know how to objective-c — X.BOZO, May 07 '16 at 04:43
Well, if you read the other question there is no answer, (obj-c and swift apis are similar in some ways) so it might be just that. If there is a way then hopefully someone will explain... good luck :) — l'L'l, May 07 '16 at 04:45

score 39 · Accepted Answer · edited Mar 09 '18 at 18:24

39

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
    } 
}

edited Mar 09 '18 at 18:24

brimstone

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answered May 07 '16 at 04:50

Iyyappan Ravi

3,205
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What if I have two textfiled, 1 , 2 , and when I click on the first 1textfiled will remove "0", and then when i click on second textfiled2 will remove "0", I want to return the value of the first textfiled when i click on textfiled2 or anywhere – X.BOZO May 07 '16 at 05:17
1

you want differentiate the textfield, check the condition below format, ` func textFieldDidBeginEditing(textField: UITextField) { if textField == fi { } else if textField == anotherTextFieldName { } }' check the condition – Iyyappan Ravi May 07 '16 at 05:28
1

Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/111271/discussion-between-iyyappan-ravi-and-x-bozo). – Iyyappan Ravi May 07 '16 at 05:51
1

its check your textfield is equal to yourTextFieldName then call the particular textfield only this code is comment for you – Iyyappan Ravi May 07 '16 at 05:54
if textField == TextFailde.text { here what i write ?} – X.BOZO May 07 '16 at 06:00
1

write what you want `fi.text = ""` or you give any function in particular textfield, mainly particular textfield only call the action – Iyyappan Ravi May 07 '16 at 06:04
its small issue set the break point and check, ok Thank you bro – Iyyappan Ravi May 07 '16 at 07:18
i use this function (func textFieldDidEndEditing(textField: UITextField)) – X.BOZO May 07 '16 at 07:19

score 10 · Answer 2 · answered Mar 28 '19 at 06:09

10

You can easily clear the TextField in swift

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

answered Mar 28 '19 at 06:09

Apps Freax

113
1
6

I am surprised that there are so many answers quoting "" instead of this one. There is literally a function to accomplish this. – BVB09 May 21 '20 at 15:41
This should be the accepted answer. – user-44651 Feb 23 '22 at 15:23

score 6 · Answer 3 · answered May 07 '16 at 04:51

6

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

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

answered May 07 '16 at 04:51

brimstone

3,370
3
28
49

score 4 · Answer 4 · answered May 07 '16 at 04:53

4

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

answered May 07 '16 at 04:53

Jayesh Miruliya

3,279
2
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score 2 · Answer 5 · answered May 07 '16 at 04:50

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.

thank you so much , your code doesn't work with me i think we should use func textFieldDidBeginEditing — X.BOZO, May 07 '16 at 05:09
Whoops, misread the question that'll be correct. Essentially the same thing. Be careful with the other answers though as they are largely incomplete; if you always set the text to "" on begin editing than anytime the user enters the field whatever they have typed will be deleted. — treyhakanson, May 07 '16 at 05:20

score 2 · Answer 6 · answered May 07 '16 at 05:26

2

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

func textFieldDidEndEdition(textField: UITextField) {

     if fi.text isEqualToString:@"" {
          fi.text = @""
     }

}

answered May 07 '16 at 05:26

Gaurav Patel

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1
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score 1 · Answer 7 · answered Aug 05 '22 at 10:40

1

simply use clearsOnBeginEditing property of textfield.

textfield.clearsOnBeginEditing = true

answered Aug 05 '22 at 10:40

Jaideep Kumar

11
2

score 0 · Answer 8 · answered Jul 18 '22 at 10:08

0

Use a small button on the right corner of textfield. Create action of that button.

@IBAction func removeSearchTFTapped(_ sender: Any) {
    searchTF.text = ""
}

answered Jul 18 '22 at 10:08

UsamaDev

21
1
3

How to clear the text field automatically

8 Answers8