I have not been able to find these functions for the title bar, so that one could have a save/update button disabled until something changes, where the button would then be enabled for saving the new item.
Please see attached photos or try adding a new contact in the native contacts application, to see this in effect.
I'll add this to the TODO list. It is something that I've been wanting to get around to and have some of the code in there but commented out
Thank you, I will be looking forward to this feature. I have tried various hacks, but until now, none have been consistent enough to put in an application.