greenrobot/EventBus
Event bus for Android and Java that simplifies communication between Activities, Fragments, Threads, Services, etc. Less code, better quality. observed · 2026-10-15
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5209
- days_rel: n/a
- days_push: 972
- n_releases_24m: 0
Adoption not part of the score
24688 stars · 4632 forks observed · 2026-10-15
What it is AI-extracted, prompt v1, taxonomy v1, 2026-10-12, confidence 0.97
EventBus is a lightweight publish/subscribe event bus for Android and Java. It enables decoupled communication between components such as Activities, Fragments, Services, and background threads.
Use cases
- send UI updates from a background thread to an Activity
- communicate between fragments without direct references
- broadcast events across different modules of an Android app
- handle sticky events like configuration changes or initialization signals
- prioritize event handling for critical UI actions
When to choose
- You need a simple, fast in‑process messaging system for Android or Java projects.
- You want zero‑configuration, annotation‑based event handling with optional indexing for performance.
- Your app has many loosely coupled components that must exchange data without tight dependencies.
When to avoid
- You require cross‑process or networked messaging; EventBus works only within the same JVM.
- You need a full‑featured message broker with persistence, clustering, or external clients.
- Your project targets platforms other than Android/Java where a native solution is preferred.
Facets
library · maturity active
middleware message-queue mobile-development backend jvm eventbus publish-subscribe android java annotation-processor sticky-events threading
9 sources
- readme: https://github.com/greenrobot/EventBus · fetched 2026-10-15 · f3a817bef53a
- site_page: https://greenrobot.org/eventbus/features · fetched 2026-08-29 · 4fa06b05822b
- site_page: https://greenrobot.org/eventbus/documentation · fetched 2026-08-29 · ce9b1a155589
- site_page: https://greenrobot.org/eventbus/documentation/how-to-get-started · fetched 2026-08-29 · 4edddab93803
- site_page: https://greenrobot.org/eventbus/documentation/delivery-threads-threadmode · fetched 2026-08-29 · 7ba65dc1fa7c
- site_page: https://greenrobot.org/eventbus/documentation/configuration · fetched 2026-08-29 · d3e960eab436
- site_page: https://greenrobot.org/eventbus/documentation/configuration/sticky-events · fetched 2026-08-29 · 685e2caa0e2d
- site_page: https://greenrobot.org/eventbus/documentation/priorities-and-event-cancellation · fetched 2026-08-29 · a30f8bcf0c67
- site_page: https://greenrobot.org/eventbus/documentation/subscriber-index · fetched 2026-08-29 · 7fa93e023717
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| greenrobot/EventBus | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="greenrobot/EventBus")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem