IllegalArgumentException: Could not locate call adapter for rx.Observable RxJava, Retrofit2
Be sure to add implementation 'com.squareup.retrofit2:adapter-rxjava2:2.4.0'
or whatever version you are using to your dependencies, and then configure retrofit with that converter:
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(endpoint)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
Updated
RxJavaCallAdapterFactory
was renamed to RxJava2CallAdapterFactory. Changed the snipped above.
For RxJava2 Use compile 'com.jakewharton.retrofit:retrofit2-rxjava2-adapter:1.0.0'
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
For more information on usage https://github.com/JakeWharton/retrofit2-rxjava2-adapter
you should have to use all Rx dependency of latest version , here i am using version 2 (like rxjava2)
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
implementation 'io.reactivex.rxjava2:rxandroid:2.0.2'
implementation 'io.reactivex.rxjava2:rxjava:2.1.9'
implementation 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
And add one more thing :
addCallAdapterFactory(RxJava2CallAdapterFactory.create())
in Retrofit Api client like :
retrofit = new Retrofit.Builder()
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.addConverterFactory(GsonConverterFactory.create())
.baseUrl(BASE_URL)
.build();