CODEWITHSUNDEEP
iosswiftuikituitextfielduitextfielddelegate
Cublax
Cublax

Reputation: 1409

Replace empty UITextfield with value

I am building a digit only textfield.

I would like that when the text in textfield is "" replace it with "0".

I only manage to get the current text in read only.

Thanks in advance

Upvotes: 0

Views: 430

Answers (3)

Russell
Russell

Reputation: 5554

If you want the text field to update when you have finished editing you can set up the action like this

Editing Did End

and then

    @IBAction func editingDidEnd(_ txtTest: UITextField) {
    if txtTest.text == ""
    {
        txtTest.text = "0"
    }

Upvotes: 1

sats
sats

Reputation: 657

Add the editingChanged delegate method to textField as follows:

In the viewDidLoad() method add the following code: 

textField.addTarget(self, action: #selector(textFieldChanged(_:)), for: .editingChanged);

And then, implement the method as follows:

@objc func textFieldChanged(_ textField: UITextField) {
    if let text = textField.text, text.isEmpty {
        textField.text = "0"
    }
}

The above method will be called every time the textField content changes.

You can also set the initial text of the textField to "0". Simply use textField.text = "0" in the viewDidLoad() method.

Upvotes: 1

sunshuyao
sunshuyao

Reputation: 82

textField.addTarget(self, action: #selector(handleTextField(_:)), for: .editingChanged)

@objc private func handleTextField(_ textField: UITextField) {
    if textField.text == "" {
        textFiled.text = "0"
    }
}

Upvotes: 0

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