detecting the change of content of UITextField when the change is not made by the keyboard

Question

I have a UIButton and a UITextField,when the button is pressed the textfield\'s content string will be equal to: This is a test string

Answer 1

You can add the UITextFieldTextDidChangeNotification:

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(textFieldChanged:)
                                             name:UITextFieldTextDidChangeNotification
                                           object:textField];

textField (param object) is your UITextField. selector is your method that will be called when this notification was fired.