在Android中使用MVP模式时，应该在哪里调用android服务并调用GoogleAPIClient？

Question

I am trying to implement MVP pattern in my android project by referring to this link : https://github.com/jpotts18/android-mvp

I have successfully implemented the view / presenter / interactor classes. I am not clear on

• Where to put the service call code?

Since i cannot get the context inside the presenter or interactor class, I am not able to put the service call there

• Where to implement the GoogleApiClient class?

Since GoogleApiClient also requires context to run, it also cannot be implemented inside the presenter or interactor without a context

Answer 1

Using dagger makes it easier to inject the Interactor on your Presenter. Try this link ( https://github.com/spengilley/AndroidMVPService )

I'm trying to achieve it without dagger. But this seems violates the MVP architecture.

From the Activity, I created an instance of Interactor. Then create instance of Presenter with the Interactor as one of the parameter.

Activity

public class SomeActivity extends Activity implements SomeView {
   private SomePresenter presenter;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      SomeInteractor interactor = new SomeInteractorImpl(SomeActivity.this);
      presenter = new SomePresenterImpl(interactor,this);
   }

   @Override
   protected void onStart() {
     super.onStart();
     presenter.startServiceFunction();
   }

Presenter

public interface SomePresenter {
   public void startServiceFunction();
}

Presenter Implementation

public class SomePresenterImpl implements SomePresenter {
   private SomeInteractor interactor;
   private SomeView view;
   public SomePresenterImpl(SomeInteractor interactor,SomeView view){
      this.interactor = interactor;
      this.view = view;
   }
   @Override
   public void startServiceFunction() {
      interactor.startServiceFunction();
   }
}

Interactor

public interface SomeInteractor {
   public void startServiceFunction();
}

Interactor Implementation

public class SomeInteractorImpl implements SomeInteractor {
   private Context context;

   public SomeInteractorImpl(Context context) {
      this.context = context;
   }

   @Override
   public void startServiceFunction() {
      Intent intent = new Intent(context, SomeService.class);
      context.startService(intent);
   }
}

Answer 2

I am also searching for your first question. However, I have the answer of the second question.

The answer is Dagger2. ( http://google.github.io/dagger/ ) You can easily inject GoogleApiClient object by using Dagger2.