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Event BusAndroid Simplificado
Componentes Android
Activity Service
Fragment Fragment Custom View
Comunicação Android
Activity Service
Fragment Fragment Custom View
Delegate Android
Activity
ServiceFragment
Fragment Custom View
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
Publish / Subscribe Papéis
Publisher Event Bus SubscriberEvent Event
Event Bus Android
ServiceFragment
Fragment Custom View
Event Bus
Activity
EventBus by greenrobot
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
// 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
// Sticky Publish
bus.postSticky(new AnyEvent());
// Sticky Register
bus.registerSticky(this);
EventBus https://github.com/greenrobot/EventBus
Otto by Square
// 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/
Otto
// Register - onCreate, onStart
bus.register(this);
// Unregister - onDestroy, onStop
bus.unregister(this);
@Subscribe
public void onAnyEvent(AnyEvent e) {
[...]
}
https://square.github.io/otto/
Otto
@Subscribe
public void onAnyEvent(AnyEvent e) {
[...]
}
@Produce
public AnyEvent produceAnyEvent() {
return AnyEvent.getLast();
}
https://square.github.io/otto/
Via Reflection
Fornece um Bus Default
Valor Anterior via *Sticky
Threading feita no Evento
OttoEventBus
Via Annotation
Gerenciamento Manual de Bus
Valor Inicial via @Produce
Threading feita no Bus
Caso de usoActivity
Fragment
Custom ViewFragment
Crie Suvinil https://play.google.com/store/apps/details?id=com.basf.suvinil.crie
420 LOC
0 Interfaces
Eventos organizados
Delegate EventBus
750+ LOC
9 Interfaces
Interfaces fragmentadas
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)
Em breve...
