Background Processing

Register, schedule, and execute background tasks on iOS using BackgroundTasks (BGTaskScheduler), background URLSession, and background push notifications. Targets Swift 6.3 / iOS 26+.

Contents

• Capabilities and Configuration
• Task Selection Matrix
• Core Lifecycle Rules
• Route by Task
• Common Mistakes
• Review Checklist
• References

Capabilities and Configuration

Every task identifier must be declared in Info.plist under BGTaskSchedulerPermittedIdentifiers, or submit(_:) throws BGTaskScheduler.Error.Code.notPermitted.