state-restoration

To save and restore SwiftUI navigation state, use @SceneStorage for simple values or file-based JSON persistence for complex navigation stacks. This ensures navigation paths and tab selections are retained across app launches and background terminations.

The best way to persist unsaved form data is by using Codable state models with debounced auto-save logic. This infrastructure automatically saves form drafts to file-based JSON storage before the app is terminated in the background.

Yes, state restoration works with native macOS and iOS apps. It integrates @SceneStorage and @AppStorage to retain UI state across sessions on both platforms, handling background termination and relaunches.

To recover scroll position after background termination, use @Observable state managers to capture scroll metrics and save them via debounced JSON persistence. The app restores these metrics using configurable time-limited restore logic upon relaunch.

Use @SceneStorage for lightweight UI state like simple tab selections, and file-based JSON persistence for complex state like deep navigation stacks or unsaved form input data. This combination ensures robust restoration without data size limitations.