why it doesn't send any request to server? - kotlin

Question

my project is based on clean architecture and hilt
I'm trying to request some data from a Web Service which I made with Python.
I don't know why but it doesn't receive any request from app
my apiservice
interface Service {
#GET("/question")
fun getQuestion(): Single<Question>
my apimodule
class ApiModule {
#Provides
#Singleton
fun provideOkHttpClient(): OkHttpClient {
val okHttpBuilder = OkHttpClient.Builder()
okHttpBuilder.addInterceptor(HttpLoggingInterceptor())
return okHttpBuilder.build()
}
#Provides
#Singleton
fun provideGson(): Gson {
return GsonBuilder()
.setLenient()
.create()
}
#Provides
#Singleton
fun provideRetrofit(okHttpClient: OkHttpClient): Retrofit {
return Retrofit.Builder()
.baseUrl(" http://25ae1464a63a.ngrok.io")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava3CallAdapterFactory.create())
.client(okHttpClient)
.build()
}
#Provides
#Singleton
fun bindApiService(retrofit: Retrofit): Service {
return retrofit.create(Service::class.java)
my viewmodel
class MainViewModel #ViewModelInject constructor(
private val questionUseCaseImpl: QuestionUseCaseImpl,
): ViewModel(){
val questionModel = MutableLiveData<QuestionModel>()
private val compositeDisposable = CompositeDisposable()
fun getData() {
questionUseCaseImpl.execute()
.subscribeOn(Schedulers.io())
.subscribe({
it?.let {
questionModel.postValue(it)
}
},{
}).let {
compositeDisposable.add(it)
}
}
override fun onCleared() {
compositeDisposable.clear()
}
}
my main activity
class MainActivity : AppCompatActivity() {
private val mainViewModel by viewModels<MainViewModel> ()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val button: Button = findViewById(R.id.startButton)
button.setOnClickListener {
mainViewModel.getData()
}
mainViewModel.questionModel.observe(this, {
it?.let {
Toast.makeText(
this,
"${it.first}is ${it.second}",
Toast.LENGTH_LONG
).show()
}
})
}
And I have no response at all! In logs it seems like I haven't sent any request