Using Coroutines and Flows with Firebase on an Android app

Part five of an Android Jetpack Compose app tutorial series replaces callback-based Firebase operations with Kotlin Coroutines and Flow to simplify asynchronous code and state handling. Firebase Authentication service methods become suspending functions that use `await()` instead of completion listeners, allowing ViewModels to execute authentication and navigation sequentially while centralized coroutine error handling manages failures. For Cloud Firestore, version 31.0.0 or later of the Firebase Bill of Materials is required for Flow support; the storage service exposes a Flow of task lists, maps user-specific Firestore documents through `dataObjects()`, and retains suspend functions for individual data operations. This removes the need for ViewModels to manage snapshot callbacks and local task maps, while Compose screens safely observe current task data with lifecycle-aware collection through `collectAsStateWithLifecycle`. The next installment will introduce Firebase Performance Monitoring, and the project source code is available in GitHub repositories for Android and related SwiftUI-based iOS and macOS versions.

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