Unexpected JDWP Error: 103. Exception during Retrofit(2.3.0) GET call - kotlin

Question

I am getting Unexpected JDWP Error: 103 during call to vk.api to fetch some data.
I have found this topic with related problem, but suggestion from there is already applyed in my application.
So maybe my retrofit configuration is wrong?
Here some code:
Module for DI, using dagger
#Module
class NetworkModule {
#Provides
internal fun provideRetrofit(): Retrofit {
return Retrofit.Builder()
.baseUrl(ApiConstants.VK_BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build()
}
#Provides
internal fun provideGroupApi(retrofit: Retrofit) : GroupApi {
return retrofit.create(GroupApi::class.java)
}
}
Api interface:
interface GroupApi {
#GET(ApiMethods.SEARCH_GROUPS)
fun getGroups(#QueryMap map: Map<String, String?>) : Observable<GroupResponse>
}
object ApiMethods {
const val SEARCH_GROUPS = "groups.search"
}
Inside query:
Model classes:
data class Response<T>(
val count: Int,
val items: List<T>
)
data class GroupResponse(
#SerializedName("response")
#Expose
val response: Response<Group>
)
data class Group(
#SerializedName("id")
#Expose
val id: Int,
#SerializedName("name")
#Expose
val name: String,
#SerializedName("screenName")
#Expose
val screen_name: String,
#SerializedName("isClosed")
#Expose
val is_closed: Int,
#SerializedName("type")
#Expose
val type: String,
#SerializedName("isAdmin")
#Expose
val is_admin: Int,
#SerializedName("isMebmer")
#Expose
val is_member: Int,
#SerializedName("photo_50")
#Expose
val photo_50: String,
#SerializedName("photo_100")
#Expose
val photo_100: String,
#SerializedName("photo_200")
#Expose
val photo_200: String
)
Here is response example from vk.api (I am providing this, because I have a thought that my model is configured not properly):
{
"response": {
"count": 193738,
"items": [{
"id": 26667550,
"name": "ARTY",
"screen_name": "arty_music",
"is_closed": 0,
"type": "page",
"is_admin": 0,
"is_member": 0,
"photo_50": "https://pp.vk.me/...841/1B4wTxXinAc.jpg",
"photo_100": "https://pp.vk.me/...840/Xc_3PikLQ_M.jpg",
"photo_200": "https://pp.vk.me/...83e/kGwRLtSLJOU.jpg"
}, {
"id": 25597207,
"name": "Alexander Popov",
"screen_name": "popov.music",
"is_closed": 0,
"type": "page",
"is_admin": 0,
"is_member": 0,
"photo_50": "https://pp.vk.me/...e8f/g2Z9jU6qXVk.jpg",
"photo_100": "https://pp.vk.me/...e8e/DtYBYKLU810.jpg",
"photo_200": "https://pp.vk.me/...e8d/QRVqdhTvQ4w.jpg"
}, {
"id": 42440233,
"name": "Музыка",
"screen_name": "exp.music",
"is_closed": 0,
"type": "page",
"is_admin": 0,
"is_member": 0,
"photo_50": "https://pp.vk.me/...2d1/52gY6m5ZObg.jpg",
"photo_100": "https://pp.vk.me/...2d0/Jx9DWph_3ag.jpg",
"photo_200": "https://pp.vk.me/...2ce/qsFhk6yEtDc.jpg"
}]
}
}
Could anybody please provide any suggestion ?
UPDATE:
I am also have tried another response model as:
data class Root<T> (
#SerializedName("response")
#Expose
val response: T
)
interface GroupApi {
#GET(ApiMethods.SEARCH_GROUPS)
fun getGroups(#QueryMap map: Map<String, String?>) : Observable<Root<Response<Group>>>
}
but still no luck...
additional code:
Presenter where I call the interactor -> and inside interactor I call GroupApi:
class SearchResultPresenter<V : SearchResultMVPView, I : SearchResultMVPInteractor> #Inject constructor(interactor: I, schedulerProvider: SchedulerProvider, compositeDisposable: CompositeDisposable)
: BasePresenter<V, I>(interactor = interactor, schedulerProvider = schedulerProvider, compositeDisposable = compositeDisposable), SearchResultMVPPresenter<V, I> {
override fun searchGroups(q: String) {
getView()?.showProgress()
interactor?.let {
compositeDisposable.add(it.getGroupList(q)
.compose(schedulerProvider.ioToMainObservableScheduler())
.subscribe { groupResponse ->
getView()?.let {
it.showSearchResult(groupResponse.response.items)
it.hideProgress()
}
})
}
}
}
class SearchResultInteractor #Inject constructor() : SearchResultMVPInteractor {
#Inject
lateinit var groupApi: GroupApi
override fun getGroupList(q: String): Observable<Root<Response<Group>>> = groupApi.getGroups(GroupRequest(q).toMap())
}
I have decided to provide the whole code, where I am applying DI:
#Singleton
#Component(modules = [(AndroidInjectionModule::class), (AppModule::class), (ActivityBuilder::class)])
interface AppComponent {
#Component.Builder
interface Builder {
#BindsInstance
fun application(application: Application): Builder
fun build(): AppComponent
}
fun inject(app: MyApplication)
}
Module for fragment:
#Module
class SearchResultFragmentModule {
#Provides
internal fun provideSearchResultInteractor(interactor: SearchResultInteractor): SearchResultMVPInteractor = interactor
#Provides
internal fun provideSearchResultFragment(presenter: SearchResultPresenter<SearchResultMVPView, SearchResultMVPInteractor>)
: SearchResultMVPPresenter<SearchResultMVPView, SearchResultMVPInteractor> = presenter
#Provides
internal fun provideSearchResultProvider(): SearchResultAdapter = SearchResultAdapter(ArrayList())
#Provides
internal fun provideLayoutManager(fragment: SearchResultFragment) : LinearLayoutManager = LinearLayoutManager(fragment.activity)
}
Provider:
#Module
abstract class SearchResultFragmentProvider {
#ContributesAndroidInjector(modules = [(SearchResultFragmentModule::class), (NetworkModule::class)])
internal abstract fun proviceSearchResultFragmentModule(): SearchResultFragment
}
Activity that contains injector for fragments inside of it:
class MainActivity : BaseActivity(), MainMVPView, HasSupportFragmentInjector {
#Inject
internal lateinit var presenter: MainMVPPresenter<MainMVPView, MainMVPInteractor>
#Inject
internal lateinit var fragmentDispatchingAndroidInjector: DispatchingAndroidInjector<Fragment>
...
//some code
override fun supportFragmentInjector(): AndroidInjector<Fragment> = fragmentDispatchingAndroidInjector
}
And activity builder:
#Module
abstract class ActivityBuilder {
#ContributesAndroidInjector(modules = [(MainActivityModule::class), (SearchResultFragmentProvider::class)])
abstract fun bindMainActibity(): MainActivity
}
AppComponent:
#Singleton
#Component(modules = [(AndroidInjectionModule::class), (AppModule::class), (ActivityBuilder::class)])
interface AppComponent {
#Component.Builder
interface Builder {
#BindsInstance
fun application(application: Application): Builder
fun build(): AppComponent
}
fun inject(app: MyApplication)
}

Answer 1

Have you tried to inject retrofit (instead of GroupApi) and then call
retrofit.create(GroupApi::class.java).getGroups(GroupRequest(q).toMap())
in your SearchResultInteractor? Also you can annotate fun provideRetrofit() as Singleton.

Answer 2

If some one still watching this post - I am sorry, I've made a mistake.
Retrofit is working properly, the issue was in uninitialized view at presenter class, so when I was calling api method groupApi.getGroups(GroupRequest(q).toMap()) in debug - exception was appearing. But problem was in view class.