Using Dagger 2 to inject into service

Question

I have an app which is basically a service that runs all the time and alarms the user when something happens.

When the service creates the alarm, it needs to give it

Answer 1

I know this question already has an answer but there are an other way to do this

first make your application extend HasServiceInjector like this:

public class App extends Application implements HasActivityInjector, 
HasServiceInjector {

@Inject
DispatchingAndroidInjector dispatchingActivityInjector;
@Inject
DispatchingAndroidInjector dispatchingServiceInjector;

@Override
public void onCreate() {
    super.onCreate();
    AppInjector.init(this);
}

@Override
public AndroidInjector activityInjector() {
    return dispatchingActivityInjector;
}

@Override
public AndroidInjector serviceInjector() {
    return dispatchingServiceInjector;
}

}

then create a ServiceBuilderModule this will perform injection over services:

@Module
abstract class ServiceBuilderModule {

@ContributesAndroidInjector
abstract MyService contributeMyService();

}

then register the new module to your component

@Component(modules = {
    AndroidSupportInjectionModule.class,
    AppModule.class,
    ActivityBuilderModule.class,
    ServiceBuilderModule.class
 })
 @Singleton
 public interface AppComponent {

 @Component.Builder
 interface Builder {
    @BindsInstance
    Builder application(App application);

    AppComponent build();
 }

 void inject(App app);

 }

then override the onCreate method of your service and add AndroidInjection.inject(this) like below code :

public class MyService extends Service {

@Override
public void onCreate() {
    AndroidInjection.inject(this);
    super.onCreate();
}

@Nullable
@Override
public IBinder onBind(Intent intent) {
    return null;
}

}

code in kotlin is exact conversion of the code above. hope this helps some coders from now on.