@objc func editingChanged(_ textField: UITextField) { if textField.text?.characters.count == 1 { if textField.text?.characters.first == " " { textField.text = "" return } } guard let habit = habitNameField.text, !habit.isEmpty, let goal = goalField.text, !goal.isEmpty, let frequency = frequencyField.text, !frequency.isEmpty else { doneBarButton.isEnabled = false return } doneBarButton.isEnabled = true
}