CODEWITHSUNDEEP
androiddagger-2
JoCuTo
JoCuTo

Reputation: 2483

Dagger2 inject everything?

I am reading documentation about Dagger2. The thing is I have clear how inject a class how has Context using this

But my doubt is with the following class for example:

public class SocialControler{

private ImageView twitterLogo;
private ImageView googleLogo;

public SocialControler(ImageView twitter, ImageView google){
twitterLogo = twitter;
googleLogo = google;
}
//Getters and Setters

}

So in my MainActivity I will have something like this 

SocialControler mSocial = new SocialControler(mTwitterLogo, mGoogleLogo);

Should I inject this class using @Inject anotation instead doing new , so no more new on our Activity? If yes How?

I am stuck in the @Mudule . How I can provide a View inside de Module ?

@Module
public class AppModuleSocialMediaManager {


    @Provides
    public MainActivity provideActivity(){
        return new MainActivity();
    }

    @Provides
    public SocialMediaClickManager provideMediaManager(MainActivity mainActivity, View twitterLogo, View googleLogo) {
        return new SocialMediaClickManager(mainActivity);
    }

    @Provides
    public View provideTwitter(){
        return ?
    //from here how I can provide a View
    }
}

Upvotes: 2

Views: 273

Answers (1)

andrei_zaitcev
andrei_zaitcev

Reputation: 1458

I would not recommend the architecture you're using to build your app, i.e. make your controllers depend on exact views, but if you're fine with that then you can implement your module like this:

 @Module
 public class AppModuleSocialMediaManager {
     private final MainActivity mainActivity;

     public AppModuleSocialMediaManager(MainActivity mainActivity) {
         this.mainActivity = mainActivity;
     }

     @Provides
     @Named("twitter_view")
     View provideTwitterView() {
         return mainActivity.findViewById(..);
     }

     @Provides
     @Named("google_view")
     View provideGoogleView() {
         return mainActivity.findViewById(..);
     }

     @Provides
     SocialController provideSocialController(@Named("twitter_view") View twitterView, @Named("google_view") View googleView) {
         return new SocialController(twitterView, googleView);
     }

 }

Then you need to declare another component. Let's say it's MainActivityComponent:

 @Component(modules = AppModuleSocialMediaManager.class)
 public interface MainActivityComponent {
     void inject(MainActivity activity);
 }

After that in your activity you can do something like this:

 public class MainActivity extends Activity {
     @Inject
     SocialController socialController;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         DaggerMainActivityComponent.Builder()
             .appModuleSocialMediaManager(new AppModuleSocialMediaManager(this))
             .build()
             .inject(this);

         socialController.doSomething();
     }

 }

Upvotes: 1

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