Nsryjdtyk

I am pretty new to MVVM Patterns and calling API with RxJava2 and Retrofit2. I'm trying to call API from Unsplash API
I have no idea what should I do, I've looked over a lot of tutorials but no solution what is happening.

Here is where I provide APIService and OkHttpClient and Retrofit:

 @Provides

@Singleton

fun provideHttpLoggingInterceptor(): HttpLoggingInterceptor {

    val interceptor = HttpLoggingInterceptor()

    interceptor.level = HttpLoggingInterceptor.Level.BODY

    return interceptor

}



@Provides

@Singleton

fun provideOkHttpClient(httpLoggingInterceptor: HttpLoggingInterceptor): OkHttpClient {

    val okHttpClient = OkHttpClient.Builder()

    okHttpClient.apply {

        if (BuildConfig.DEBUG) {

            addNetworkInterceptor(StethoInterceptor())

            addInterceptor(httpLoggingInterceptor)

        }

    }

    return okHttpClient.build()

}



    @Provides

@Singleton

fun provideApiService(okHttpClient: OkHttpClient): PhotoService {

    val retrofit = Retrofit.Builder()

        .baseUrl("https://api.unsplash.com/")

        .addConverterFactory(GsonConverterFactory.create())

        .addCallAdapterFactory(RxJava2CallAdapterFactory.create())

        .client(okHttpClient)

        .build()



    return retrofit.create(PhotoService::class.java)

}

PhotoService:

   @GET("photos")

fun getPhotos(@Query("page") page: Int = 1): Observable<List<Photo>>

PhotoRepository:

  fun getPhotos() : PhotoService {

    return photoApiService

}

ViewModel:

  //=======================================================

//                  DISPOSABLE

//=======================================================

private var disposable: Disposable? = null





//=======================================================

//         GET PHOTOS

//=======================================================

private val photoLive = MutableLiveData<List<Photo>>()

private val photoData: LiveData<List<Photo>>

get() = photoLive



@SuppressLint("LogNotTimber", "CheckResult")

fun getPhotos(): LiveData<List<Photo>> {

   disposable = photoRepository.getPhotos().getPhotos()

        .subscribeOn(Schedulers.io())

        .observeOn(AndroidSchedulers.mainThread())

        .subscribe(

       {

               it -> photoLive.value = it

       },

       {

               it -> if (it != null)

       {

               Log.e(TAG,Log.getStackTraceString(it))

       }

       })

    return photoData

}

And Fragment where I set adapter:

 private fun setPhotos() {

    viewModel.getPhotos().observe(this, Observer<List<Photo>> {

        it -> rvListPhoto.adapter = PhotosAdapter(it)

    })

}

I think code from Adapter is not necessarily to put it. Because the error is from the other side but I don't know where is the problem.

And if it does matters here is the error:

retrofit2.adapter.rxjava2.HttpException: HTTP 401 

    at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onNext(BodyObservable.java:54)

    at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onNext(BodyObservable.java:37)

    at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:44)

    at io.reactivex.Observable.subscribe(Observable.java:12005)

    at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)

    at io.reactivex.Observable.subscribe(Observable.java:12005)

    at io.reactivex.internal.operators.observable.ObservableSubscribeOn$SubscribeTask.run(ObservableSubscribeOn.java:96)

    at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:571)

    at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)

    at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)

    at java.util.concurrent.FutureTask.run(FutureTask.java:266)

    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)

    at java.lang.Thread.run(Thread.java:764)

Looking at the documentation of unsplash, seems like you need to pass client_id with your query as a query parameter like below

https://api.unsplash.com/photos/?client_id=YOUR_ACCESS_KEY

This client_id can be found by user authentication api at https://unsplash.com/oauth/

Check https://unsplash.com/documentation#user-authentication for more information.