iphone - Detect key press on virtual keyboard

Question

I am working on a small children's game for my son that involves timing on the virtual keyboard.

Is possible to detect when a key on the virtual keyboard is pressed? I.e. get a touch notification (touchesBegan)? I do not need to know which key is pressed, just if and when the press action started.

Answer 1

For TextView you can use...

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text
- (void)textViewDidChange:(UITextView *)textView

For TextField you can use...

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string

See UITextViewDelegate and UITextFieldDelegate on Apple website.