How to handle background location?

To handle background location in your app, you should utilize Core Location's session management effectively. Here are some key points from the session "What’s new in location authorization" at WWDC 2024:

1. Session Lifecycle: Core Location sessions can continue to function even if your app is suspended or terminated. This is crucial for features like workout tracking, where the app needs to continue receiving location updates in the background. You should ensure that your app's process launch logic is aware of the features it needs to pursue and resumes any interrupted sessions as soon as possible. This is discussed in the Session lifecycle chapter.

2. Implicit and Explicit Sessions: Implicit sessions are automatically managed by Core Location, but you can also create explicit CL service session objects to assert your app's continued interest in its authorization goals. This is important for maintaining location tracking when the app is in the background.

3. Authorization Goals: When your app is backgrounded, Core Location will not ask users to adjust the app's authorization level. However, it can restore authorization when the app returns to the foreground if needed. This ensures that your app can continue to function as expected without unnecessary interruptions.

4. Diagnostic Properties: These properties help you understand why an authorization goal cannot be met. For example, if a user denies location sharing, you can use diagnostic properties to handle such scenarios gracefully.

By managing sessions effectively and understanding the lifecycle and authorization goals, you can ensure that your app handles background location updates efficiently.