How can I get a textDidChange (like for a UISearchBar) method for a UITextField?

Question

How can I get a textDidChange method for a UITextField? I need to call a method every time a change is made to a text field. Is this possible? Thanks!

Answer 1

I found some problem when you use replaceCharactersInRange in delegate shouldChangeCharactersInRange.

Ex: In Vietnamese keyboard string aa -> â, So if you use method replaceCharactersInRange then Incorrect results.

You can try in this case by event UIControlEventEditingChanged:

[textField addTarget:self action:@selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged]