Event Bus: Android Simplificado

Como simplificar o desenvolvimento melhorando a comunicação entre componentes Android.

# Libs

EventBus
https://github.com/greenrobot/EventBus

Otto
https://square.github.io/otto/

# Referências

Google Developer Experts
https://medium.com/google-developer-experts/

# Autores

Mickele Moriconi
https://twitter.com/mickele

Ademar Oliveira
https://twitter.com/ademar111190

Transcript

1. Event Bus Android Simplificado
3. Componentes Android Activity Service Fragment Fragment Custom View
4. Comunicação Android Activity Service Fragment Fragment Custom View
5. Delegate Android Activity Service Fragment Fragment Custom View
6. Activity se torna God Object Activity precisa implementar diversas interfaces Excesso de cast e instance of class GodActivity implements A, B, C, D, E, Fuck {} Delegate :( Android
7. Publish / Subscribe Papéis Publisher Event Bus Subscriber Event Event
8. Event Bus Android Service Fragment Fragment Custom View Event Bus Activity
9. EventBus by greenrobot
10. EventBus // Create a bus EventBus bus = new EventBus(); // Or use the default EventBus bus = EventBus.getDefault(); // Publish bus.post(new AnyEvent()); https://github.com/greenrobot/EventBus
11. // Register - onCreate, onStart bus.register(this); // Unregister - onDestroy, onStop bus.unregister(this); public void onEvent(AnyEvent e) { [...] } public void onEventMainThread(AnyEvent e) {} EventBus https://github.com/greenrobot/EventBus
12. // Sticky Publish bus.postSticky(new AnyEvent()); // Sticky Register bus.registerSticky(this); EventBus https://github.com/greenrobot/EventBus
13. Otto by Square
14. // Create a main thread bus Bus bus = new Bus(); // Create an any thread bus Bus bus = new Bus(ThreadEnforcer.ANY); // Publish bus.post(new AnyEvent()); Otto https://square.github.io/otto/
15. Otto // Register - onCreate, onStart bus.register(this); // Unregister - onDestroy, onStop bus.unregister(this); @Subscribe public void onAnyEvent(AnyEvent e) { [...] } https://square.github.io/otto/
16. Otto @Subscribe public void onAnyEvent(AnyEvent e) { [...] } @Produce public AnyEvent produceAnyEvent() { return AnyEvent.getLast(); } https://square.github.io/otto/
17. Via Reflection Fornece um Bus Default Valor Anterior via *Sticky Threading feita no Evento Otto EventBus Via Annotation Gerenciamento Manual de Bus Valor Inicial via @Produce Threading feita no Bus
18. Caso de uso Activity Fragment Custom View Fragment
19. Crie Suvinil https://play.google.com/store/apps/details?id=com.basf.suvinil.crie
20. 420 LOC 0 Interfaces Eventos organizados Delegate EventBus 750+ LOC 9 Interfaces Interfaces fragmentadas
21. Referências Google Developer Experts https://medium.com/google-developer-experts/ Event-driven programming for Android (part I) https://medium.com/google-developer-experts/event-driven-programming-for-android-part-i-f5ea4a3c4eab Event-driven programming for Android (part II) https://medium.com/google-developer-experts/event-driven-programming-for-android-part-ii-b1e05698e440 Event-driven programming for Android (part III) https://medium.com/google-developer-experts/event-driven-programming-for-android-part-iii-3a2e68c3faa4
22. @mickele @ademar111190