The below code example checks if UITextField value is empty and can be used when we need to make sure that all required field contain values for example and if otherwise, display an error message.

The firstNameTextField is a UITextField added to the UIView on the page. I simply refer to the name of UITextField object and use isEmpty to check if is true. The exclamation mark at the end “!” is used to unwrap the value.

Check If UITextField isEmpty

if (firstNameTextField.text?.isEmpty)!
{
  // Display Alert dialog window if the First Name TextField is empty
}

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