Question

所以我一直在学习Dagger 2 Android，但我遇到了问题。我想在运行时传递值。我读过很多博客等，但是找不到任何解决方案。每个Dagger来源都是关于Dagger 2而不是Dagger 2 Android。无论如何，在Dagger 2 Android上也可以做到吗？还是我应该简单地迁移到Dagger 2？

这是AppComponent.java

@Singleton
@Component(
        modules = {
                AndroidSupportInjectionModule.class,
                ActivityBuildersModule.class,
                AppModule.class,
        }
)
public interface AppComponent extends AndroidInjector<BaseApplication> {

    @Component.Builder
    interface Builder{

        @BindsInstance
        Builder application(Application application);

        AppComponent build();
    }
}

这是ActivityBuildersModule.java

@Module
public abstract class ActivityBuildersModule {
    //For injection class
    @AuthScope
    @ContributesAndroidInjector(
            modules = {
                    AuthModule.class,
                    InjectFragmentBuildersModule.class, //Only gonna exist on AuthActivity Scope
                    MainViewModelsModule.class,
            })
    abstract AuthActivity contributeAuthActivity();
}

这是AuthModule.java

@Module
public class AuthModule {
    //SubComponent
    @AuthScope
    @Provides
    static Tiers getTiers(){
        return new Tiers();
    }

    @AuthScope
    @Provides
    static Engine getEngine(){
        return new Engine();
    }

    @AuthScope
    @Provides
    static Car getCar(Tiers tiers, Engine engine, @Named("String1")String string){
        return new Car(tiers,engine,string);
    }

    @AuthScope
    @Provides
    static FragmentManager getFragmentManager(AuthActivity authActivity){
        return authActivity.getSupportFragmentManager();
    }
}

最后是AuthActivity.java

public class AuthActivity extends DaggerAppCompatActivity {

    private static final String TAG = "AuthActivity";

    @Inject
    Car car;

    @Inject
    @Named("String1")
    String test1;

    @Inject
    @Named("String2")
    String test2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_auth);

        car.startCar();
        car.setmBrand("new test brand");
        NavController navController= Navigation.findNavController(this,R.id.nav_host_fragment);
        navController.navigate(R.id.injectFragment);
    }

}

所以可以说我想将一些字符串传递给Car而不是@Named（“ String1”）怎么办？我用二传手解决了这个问题，但我无法每次都解决那样的问题。

Android Dagger 2如何在运行时传递值？

0 个答案: