Undo button press check iPad/iPhone keyboard

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How do I check if an UNDO button was pressed on an iPhone or iPad? If the user presses UNDO button, I wish to return NO for this method of searchBar delegate.

"- (BOOL)searchBar:(UISearchBar *)searchBar shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text"

One thing I tried is, I check that when I press an UNDO button, [text isEqualToString:@""] returns YES. But when I press the DELETE button on the keyboard, I guess my text would be @"" for DELETE button as well.

Is there a way to programmatically figure out which keyboard button has the user pressed?

asked 21 secs ago

techie_woman

379