[INFO] About Retrofit and RxJava Latest Versions

[sebetci]

1. Info

I found out that the major version of the RxJava library has been upgraded to v3. That's why I opened this issue. The dependencies (build.gradle (:app)) I use in the current project are as follows:

dependencies {
    ...

    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
    implementation 'com.squareup.retrofit2:adapter-rxjava3:2.9.0'

    implementation 'io.reactivex.rxjava3:rxandroid:3.0.0'
    implementation 'io.reactivex.rxjava3:rxjava:3.0.0'

    implementation 'androidx.recyclerview:recyclerview:1.2.1'
}

In this case, the assignment (.addCallAdapterFactory(RxJava3CallAdapterFactory.create())) to the retrofit object in the onCreate() method in MainActivity.java should be updated:

public class MainActivity extends AppCompatActivity {
    ...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    ...

        retrofit = new Retrofit.Builder()
                .baseUrl(baseURL)
                .addCallAdapterFactory(RxJava3CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create(gson))
                .build();
    }
}

2. Resources

• Stack Overflow - retrofit2 and rxjava3: java.lang.IllegalArgumentException