AgentSkillsCN

iOS App Lifecycle

在 AppDelegate、SceneDelegate、深度链接以及后台任务方面的规范。

SKILL.md
--- frontmatter
name: iOS App Lifecycle
description: Standards for AppDelegate, SceneDelegate, Deep Linking, and Background Tasks.
metadata:
  labels: [ios, lifecycle, scenedelegate, background-tasks]
  triggers:
    files: ['AppDelegate.swift', 'SceneDelegate.swift']
    keywords:
      [
        didFinishLaunchingWithOptions,
        willConnectTo,
        backgroundTask,
        Shortcut,
        UserActivity,
      ]

iOS App Lifecycle Standards

Priority: P0

Implementation Guidelines

App & Scene Delegate

  • •SceneDelegate: Use for UI windows and scene-specific state in iOS 13+.
  • •AppDelegate: Focus on app-wide setup (DI, Analytics, Push notification registration).
  • •Slim Delegates: Move initialization logic to dedicated Bootstrapper or AppCoordinator.

Deep Linking

  • •Universal Links: Prefer over custom URL schemes. Handle via scene(_:continue:userActivity:).
  • •Handling logic: Routing should be handled by the Root Coordinator to navigate to specific screens.

Background Tasks

  • •Background Fetch: Use BGTaskScheduler for periodically refreshing data.
  • •Expiration: Handle expirationHandler to avoid app kill by the system.

Anti-Patterns

  • •Fat AppDelegate: **No complex logic in didFinishLaunching**: Use a Bootstrapper service.
  • •Direct UI in AppDelegate: **No UIWindow setup in AppDelegate**: Use SceneDelegate for iOS 13+.
  • •Blocking Launch: **No synchronous network calls in launch**: Move to background thread or defer.

References