When I have the iOS keyboard's return key set to display as "Done", how do I intercept the keystroke so that I know the user tapped the return key?
No matter what you label that key, when a user taps it there is a call to the method:
- (BOOL)textFieldShouldReturn:(UITextField *)textField{
see:
https://developer.apple.com/reference/uikit/uitextfielddelegate?language=objc