Q:

How can I catch the clear button in a UITextField

Is it possible to catch a clear button method  from a UITextField somehow and then and give it  more things to do like clear annotations on a map  etc ? 
On which method I need to catch to additional with the clear button ? 
Thanks for help and fast answer 

A:

You can set yourself as the text field delegate and implement textField:shouldChangeCharactersInRange:replacementString:. If the range is the full range of the textField.text and the replacement string is equal to @"" then it is a clear operation.
Note that the user manually selecting all text and hitting backspace on the keyboard will have the same result.

