How to Autogenerate App Version Number from GIT

Application needs a version number, naturally. It's publicly used to identify, which version customer is using (and reporting bugs about).

However there is a very important technical reason to take good care of version number: if you want to update application, the new version number must be bigger than the old one. Sounds easy, yet again...

Let's check the documentation:

How to Update CFBundleVersion Before Building Application

Used to update application version number in appDelegate.m during startup. The problem was that user has to run the application at least once to update version number in system Settings application.

Before that moment version number was either missing or wrong, depending on what the default value was. Not good.