Set editText length limitation inside tableView in iOS

Question

I used a tableView as a registration screen and I need to enforce some length limitation to every row. I used the function below but it lets all the fields have the same constraint. Does anyone know how to handle it?

func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
    let maxLength = 12
    let currentString: NSString = textField.text! as NSString
    let newString: NSString =
        currentString.replacingCharacters(in: range, with: string) as NSString
    return newString.length <= maxLength
}

Where is this code? Your cell class or your view controller? — rmaddy, Dec 05 '18 at 15:46
@TalCohen They want a different length for each each text field in each row of th e table view. — rmaddy, Dec 05 '18 at 15:55
@SaikoDiabovic Why is this code in the view controller? It belongs in your custom cell class. All of the text field delegate methods should be in the class that contains the text field. — rmaddy, Dec 05 '18 at 15:56
@rmaddy .. i moved the func inside the custom cell class .. but still have the same issue ,, and how to limit each row ? — Saiko Diabovic, Dec 05 '18 at 16:05

score 0 · Accepted Answer · answered Dec 05 '18 at 16:09

Since your text field delegate methods are in the cell, the cell needs to know what length to enforce for its text field.

Your view controller needs to provide that length to each cell in cellForRowAt based on the current index path.

Add a textLength property to your cell class and then set that value as needed in cellForRowAt.

Then your shouldChangeCharactersIn in the cell class can use that textLength property instead of the hardcoded 12 you have now.

Set editText length limitation inside tableView in iOS

1 Answers1