app state transitions

Objective C apps can handle background refresh and app state transitions using several mechanisms. One way is through background fetch, where the app periodically wakes up in the background to fetch new content. Another way is through background notifications, where the app receives notifications even when it’s in the background. Additionally, Objective C apps can handle app state transitions by implementing methods in the app delegate, such as applicationWillResignActive and applicationDidBecomeActive. These methods allow the app to perform specific actions when it transitions between states, such as pausing or resuming certain tasks. By utilizing these mechanisms and methods, Objective C apps can effectively manage background refresh and app state transitions.