Question 130581 in Xcode Question posted in
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Xcode – Is there a iOS standard for adding error messages to textFields?

I am trying to perform text validation on my textFields for user login and sign up and I want to display error text depending on what the user inputs. I have been trying to find if there is any sort of default implementation for displaying error text in or around a textfield that I can build off of but I have not been able to find anything. Is there a solution that doesn’t involve relying upon external libraries?

I already have the logic for validating the textFields but I just need to display messages to the user. This is what I have:

@IBAction func signUpButton(_ sender: UIButton) {
        
        if (emailTextField.text == "") {
            print("Please enter an email.")
        } else if (passwordTextField.text == "") {
            print("Please enter a password.")
        } else if (confirmPasswordTextField.text == "") {
            print("Please confirm your password.")
        } else if (confirmPasswordTextField.text != passwordTextField.text) {
            print("Please ensure that your passwords are matching.")
        } else if (!emailTextField.isEmail()) {
            print("Please enter a valid email address.")
        } else if (!passwordTextField.isValidPassword()) {
            print("Passwords must be at least 8 characters in length and must contain at least one letter and one number.")
        }
    }
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2

Answers


  1. 0

    your can use UIAlertController to show the error messages.

    For textField use

    yourTextfield.text = "Error Message"
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  2. 0

    If you’re looking for a built-in solution that is really low-effort like

    inputView.validationErrorMessage = "you must enter an email"

    then no, there is no such thing built in to UIKit. However there are many built-in mechanisms that can be very easily used to show error messages.

    For example, UIAlertController can show a modal popup with possible options for them to choose from. Another approach is to add labels or imageviews that indicate a validation error and use the isHidden property to show/hide them at the appropriate time.

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