Daggers configuration

Daggers.md

Daggers

Configuration

My minimal configuration would be.

AppComponent

@Singleton
@Component(modules = AppModule.class)
public interface AppComponent {

  ActivityComponent plus(ActivityModule __);
}

ActivityComponent

@ActivityScope
@Subcomponent(modules = ActivityModule.class)
public interface ActivityComponent {
}

Application

public class SampleApp extends Application implements AppInjector {

  private AppComponent appComponent;

  @Override
  public void onCreate() {
    super.onCreate();
    appComponent = DaggerAppComponent.builder()
        .appModule(new AppModule(this))
        .build();
    Daggers.installAppInjector(this);
  }

  @Override
  public Object appComponent() {
    return appComponent;
  }

}

BaseActivity

public abstract class BaseActivity extends AppCompatActivity implements ActivityInjector {
  @Override
  public void onCreate(@Nullable final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Daggers.installActivityInjector(this);
  }

  @Override
  protected void onDestroy() {
    Daggers.uninstallActivityInjector(this);
    super.onDestroy();
  }

  @Override
  public Object activityModule() {
    return new ActivityModule(this);
  }
}

Everything is all done.

Usage

Let’s add an activity

Step 1: Add HomeActivity to ActivityModule

@ActivityScope
@Subcomponent(modules = ActivityModule.class)
public interface ActivityComponent {

  void inject(HomeActivity __);
}

Step 2: Inject

public class HomeActivity extends BaseActivity {

  // @Inject your dependencies
  @Override
  public void onCreate(@Nullable final Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Daggers.inject(this); // so easy
  }
}

Repeat those steps to add your activities or fragments and even custom views.