A comprehensive guide to migrating Android reactive architectures from EventBus and RxJava to Kotlin Flow. Covers core reactive fundamentals (hot vs cold streams, backpressure, operator categories), detailed pros/cons of each library, and concrete side-by-side code migration scenarios: EventBus to SharedFlow, RxJava Observables to cold Flow, and BehaviorSubject to StateFlow. Also covers interoperability via kotlinx-coroutines-rx3, testing with Turbine, and a migration checklist with lifecycle-safe collection patterns.
Table of contents
3.1 RxJava / RxKotlin3.2 EventBus (GreenRobot)3.3 Kotlin Flow3.4 Why We Are Migrating Everything to Kotlin Flow4. The Master Operator & Concept Mapping5. Technical Migration Playbook5.1 Scenario A: Migrating EventBus to SharedFlow5.2 Scenario B: Migrating Cold RxJava Streams to Standard flow5.3 Scenario C: Migrating RxJava Subjects (UI State) to StateFlow6. Advanced Interoperability & Testing Strategies6.1 Bridging Legacy and Modern Streams (Interoperability)6.2 Testing Reactive Architectures: Turbine Integration7. Migration Summary Checklist3.8K Impressions2 Comments