Add sign-in to an Android app with the WorkOS Android SDK

Android authentication with WorkOS AuthKit must avoid embedded secrets because APK contents are extractable, so the tutorial uses a client ID, PKCE, and the SDK’s restricted PublicClient rather than an API key. It describes building a single-activity Kotlin and Compose app that launches AuthKit in a Chrome Custom Tab, receives a custom-scheme redirect through a properly configured callback activity, persists the PKCE verifier and CSRF state to survive process death, validates the returned state, and exchanges the authorization code for tokens. Access tokens should remain only in memory, while long-lived refresh tokens should use Keystore-backed encrypted storage; refresh operations must save rotated tokens, be serialized to avoid concurrency failures, and occur shortly before expiry. Proper sign-out clears local state and opens a WorkOS logout URL using the session ID from the access token, while redirect and logout return URIs must be allowlisted. The guide also covers typed SDK error handling, automatic retries for certain server and rate-limit failures, network-specific recovery, backend-side token verification, and cautions that mobile clients should not call WorkOS management endpoints directly.

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