max lengh for textfield while typing in swift

Asked Oct 04 '17 at 18:45

Active Oct 04 '17 at 18:59

Viewed 32 times

How can I control the max length of each textfield? For example, I want set max len for txtname = 10. So while typing, if the count of characters is more than 10, it should stop typing. I use the below code but it doesn't work:

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    guard let text = textField.text else { return true }
    let newLength = text.characters.count + string.characters.count - range.length
    return newLength <= 10 // Bool
}

edited Oct 04 '17 at 18:59

Vega

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asked Oct 04 '17 at 18:45

ali

Did you set the delegate for `UITextField`? – Vini App Oct 04 '17 at 18:48
http://www.globalnerdy.com/2015/04/27/how-to-program-an-ios-text-field-that-takes-only-numeric-input-or-specific-characters-with-a-maximum-length/ – Sourav Sachdeva Oct 04 '17 at 18:51
vini app : oh no. now i set delegate and work. thanks – ali Oct 04 '17 at 18:59
https://stackoverflow.com/a/46513151/2303865 – Leo Dabus Oct 04 '17 at 19:04
https://stackoverflow.com/questions/25223407/max-length-uitextfield – Vini App Oct 04 '17 at 19:25

max lengh for textfield while typing in swift

0 Answers0