UITextField text change event

Question

How can I detect any text changes in a textField? The delegate method shouldChangeCharactersInRange works for something, but it did not fulfill my need exactly.

Answer 1

For Swift 3.0:

let textField = UITextField()

textField.addTarget(
    nil,
    action: #selector(MyClass.textChanged(_:)),
    for: UIControlEvents.editingChanged
)

using class like:

class MyClass {
    func textChanged(sender: Any!) {

    }
}