I don't have any type of error when I run the application, but the problem is I don't retrieve the data from my interface. I use Dagger to inject dependencies, and retrofit to retrieve the data from Last.fm Api.
When I try to use a log to check if the data is null, the message is not displayed in logcat and don't work with a toast message.
Service interface
public interface GenreTopTracksService {
@GET("?method=tag.gettoptracks&format=json")
Single<GenreTopTracksResponse> getGenreTopTracks(@Query("tag") String user, @Query("limit") int limit, @Query("api_key") String apiKey);
}
Presenter interface
public interface GenreTopTracksPresenter {
void getGenreTopTracks(String tag, int limit, String apiKey);
}
Interactor interface
public interface GenreTopTracksInteractor {
Single<GenreTopTracksResponse> getGenreTopTracks(String tag, int limit, String apiKey);
}
View interface -- here i have the update data method
public interface GenreTopTracksView {
void updateData(List<Track> tracks);
}
this class is an a implementation of the GenreTopTrackPresneter
public class GenreTopTracksPrensenterImpl implements GenreTopTracksPresenter {
Disposable mDisposable;
GenreTopTracksInteractor mInteractor;
GenreTopTracksView mGenreViewData;
public GenreTopTracksPrensenterImpl(GenreTopTracksInteractor mInteractor, GenreTopTracksView mGenreViewData) {
this.mInteractor = mInteractor;
this.mGenreViewData = mGenreViewData;
}
@Override
public void getGenreTopTracks(String tag, int limit, String apiKey) {
disposeRequest();
mDisposable = mInteractor.getGenreTopTracks(tag, limit, apiKey)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.map(new Function<GenreTopTracksResponse, List<Track>>() {
@Override
public List<Track> apply(@NonNull GenreTopTracksResponse topTracksResponse) throws Exception {
if (topTracksResponse != null && topTracksResponse.getTopTracks() != null && topTracksResponse.getTopTracks().getTracks() != null) {
return topTracksResponse.getTopTracks().getTracks();
}
return new ArrayList<Track>();
}
})
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<List<Track>>() {
@Override
public void accept(@NonNull List<Track> tracks) throws Exception {
if (tracks.size() == 0) {
// NO se muestra nada
}else{
mGenreViewData.updateData(tracks);
}
}
}, new Consumer<Throwable>() {
@Override
public void accept(@NonNull Throwable throwable) throws Exception {
Log.d("ERRORGENRE", "Errorxd");
}
});
}
private void disposeRequest() {
if (mDisposable != null && !mDisposable.isDisposed()) {
mDisposable.dispose();
}
}
}
THis is my module class to inject dependencies to my main activity @Module public class GenreTopTracksModule {
GenreTopTracksView mView;
public GenreTopTracksModule(GenreTopTracksView view) {
mView = view;
}
// provides the view to create the top tracks presenter
@Singleton
@Provides
public GenreTopTracksView providesTopTracksView() {
return this.mView;
}
// provides a converter factory to create the retrofit instance
@Singleton
@Provides
public Converter.Factory providesConverterFactory() {
return GsonConverterFactory.create();
}
// provides a call adapter factory needed to integrate rxjava with retrofit
@Singleton
@Provides
public CallAdapter.Factory providesCallAdapterFactory() {
return RxJava2CallAdapterFactory.create();
}
// provides a retrofit instance to create the top tracks interactor
@Singleton
@Provides
public Retrofit providesRetrofit(Converter.Factory converter, CallAdapter.Factory adapter) {
return new Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addCallAdapterFactory(adapter)
.addConverterFactory(converter)
.build();
}
// provides top tracks interactor to make an instance of the presenter
@Singleton
@Provides
public GenreTopTracksInteractor providesTopTopTracksInteractor(Retrofit retrofit) {
return new GenreTopTracksInteractorImplementation(retrofit);
}
// provides top track presenter
@Singleton
@Provides
public GenreTopTracksPresenter providesTopTracksPresenter(GenreTopTracksInteractor interactor, GenreTopTracksView mView) {
return new GenreTopTracksPrensenterImpl(interactor, mView);
}
}
And this is my main activity
public class SelectionActivity extends AppCompatActivity implements GenreTopTracksView{
@Inject
GenreTopTracksPresenter mPresenter;
Button mButton;
EditText mEditText;
String tag;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_selection);
DaggerGenreTopTracksComponent.builder().genreTopTracksModule(new GenreTopTracksModule(this)).build().inject(this);
mButton = (Button) findViewById(R.id.button_prueba);
mEditText = (EditText) findViewById(R.id.edit_prueba);
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
tag = mEditText.getText().toString();
mPresenter.getGenreTopTracks(tag, Constants.TOP_ITEMS_LIMIT, Constants.API_KEY);
}
});
}
@Override
public void updateData(List<Track> tracks) {
if(tracks != null){
for(int x = 0; x<tracks.size(); x++){
Log.d("datasetTrack", tracks.get(x).getName());
Toast.makeText(SelectionActivity.this, tracks.get(x).getName(), Toast.LENGTH_SHORT).show();
}
}else if(tracks == null){
Log.d("datasetTrack", "datos nulos :(");
Toast.makeText(SelectionActivity.this, "Datos nulos", Toast.LENGTH_SHORT).show();
}
}
}
I need to see the data in the "updateData" method.
