There are few changes needs to be done for the existing android projects with dagger after you update the version. this is the guide for that.

Dagger_2_23_2_changes.md

Changes to be made to your Android Dagger injection if you have updated to the latest 2.23.2

Scope Structure

@Scope
@Retention(RetentionPolicy.CLASS)
public @interface ApplicationScope {
}

Module Structure

@Module
public class SharedPreferenceModule {

    @ApplicationScope
    @Provides
    SharedPreferences sharedPreferences(Application application) {
        return application.getSharedPreferences(
                KeyWordsAndConstants.SHARED_PREFERENCE_DB_NAME,
                Context.MODE_PRIVATE
        );
    }
}

SubComponent needs to look like this -

@LoginScope
@Subcomponent(modules = {
        LoginModule.class
})
public interface LoginSubComponent extends AndroidInjector<Login> {
    @Subcomponent.Factory
    public interface Factory extends AndroidInjector.Factory<Login> {
    }
}

AppModule Structure

@Module(
        subcomponents = {
                SplashSubComponent.class,
                LoginSubComponent.class
        }
)
public class AppModule {
}

Builders Structure

@Module
public abstract class LoginActivityBuilder {

    @Binds
    @IntoMap
    @SuppressWarnings("unused")
    @ClassKey(Login.class)
    abstract AndroidInjector.Factory<?> bind(LoginSubComponent.Factory builder);
}

AppComponent Structure

@ApplicationScope
@Component(
        modules = {
                AndroidInjectionModule.class,
                AppModule.class,
                NetworkModule.class,
                RepositoryModule.class,
                LogUtilModule.class,
                SharedPreferenceModule.class,
                SplashActivityBuilder.class,
                LoginActivityBuilder.class
        }
)
public interface AppComponent {
    @Component.Builder
    interface Builder {
        @BindsInstance
        Builder application(Application application);

        AppComponent build();
    }

    void inject(ApplicationClass applicationClass);
}

Application Class Structure

public class ApplicationClass extends Application implements HasActivityInjector {

    @Inject
    DispatchingAndroidInjector<Activity> dispatchingAndroidInjector;

    @Override
    public AndroidInjector<Activity> activityInjector() {
        return dispatchingAndroidInjector;
    }

    @Override
    public void onCreate() {
        super.onCreate();

        DaggerAppComponent
                .builder()
                .application(this)
                .build()
                .inject(this);
    }
}