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I renamed AppDelegate.h in my iOS application project.
The project is still working but the delegate name turned red and a small question mark button appeared.
Will this cause problems in the future? Why did the App Delegate turn red?
An AppDelegate is the object that act for the whole application, i.e., it is an object that confirms to the
UIApplicationDelegateprotocol. E.g., it should react if the application becomes active (– applicationDidBecomeActive:is fired) etc.The object’s name does not matter. If a file turns red in Xcode it means that Xcode can not find the actual file. Maybe you changed the name or moved it outside of Xcode. Usually it helps to remove the red file and re-add it.