The quality-of-service class for tasks that the user does not track actively.
- iOS 8.0+
- macOS 10.10+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
- Xcode 6.0.1+
Utility tasks have a lower priority than default, user-initiated, and user-interactive tasks, but a higher priority than background tasks. Assign this quality-of-service class to tasks that do not prevent the user from continuing to use your app. For example, you might assign this class to long-running tasks whose progress the user does not follow actively.
The quality-of-service class for user-interactive tasks, such as animations, event handling, or updating your app's user interface.
The quality-of-service class for tasks that prevent the user from actively using your app.
The quality-of-service class for maintenance or cleanup tasks that you create.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.Learn more about using Apple's beta software