{"id":55650,"library":"adapter-rxjava2","title":"Retrofit RxJava2 Adapter","description":"A Retrofit CallAdapter that enables returning RxJava 2 Observable, Flowable, Single, Maybe, and Completable types from service methods.","status":"active","version":"3.0.0","language":"java","source_language":null,"source_url":"https://github.com/square/retrofit","tags":["retrofit","rxjava2","http-client","adapter"],"install":[{"cmd":"<dependency>\n  <groupId>com.squareup.retrofit2</groupId>\n  <artifactId>adapter-rxjava2</artifactId>\n  <version>3.0.0</version>\n</dependency>","lang":"xml","label":"Maven"},{"cmd":"implementation 'com.squareup.retrofit2:adapter-rxjava2:3.0.0'","lang":"groovy","label":"Gradle"}],"dependencies":[],"imports":[{"symbol":"RxJava2CallAdapterFactory","correct":"retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory"}],"quickstart":{"code":"import retrofit2.Retrofit;\nimport retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;\nimport retrofit2.http.GET;\nimport io.reactivex.Observable;\n\npublic class Example {\n    interface Api {\n        @GET(\"users\")\n        Observable<String> getUsers();\n    }\n\n    public static void main(String[] args) {\n        Retrofit retrofit = new Retrofit.Builder()\n            .baseUrl(\"https://api.example.com/\")\n            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())\n            .build();\n        Api api = retrofit.create(Api.class);\n        api.getUsers().subscribe(System.out::println);\n    }\n}","lang":"java","description":"Configures Retrofit to use RxJava2 for asynchronous HTTP calls."},"warnings":[{"fix":"If using RxJava3, use com.squareup.retrofit2:adapter-rxjava3 instead.","message":"Retrofit 3.0 changed the package from retrofit2.adapter.rxjava2 to retrofit2.adapter.rxjava3 for RxJava3; this adapter is for RxJava2 only.","severity":"breaking","affected_versions":">=3.0.0"}],"env_vars":null,"search_vec":"'2':11 'adapt':3,27 'calladapt':6 'client':26 'complet':17 'enabl':8 'flowabl':13 'http':25 'http-client':24 'mayb':15 'method':21 'observ':12 'retrofit':1,5,22 'return':9 'rxjava':10 'rxjava2':2,23 'servic':20 'singl':14 'type':18","created_at":"2026-06-15T10:00:15.379741+00:00","updated_at":"2026-06-15T10:00:15.379741+00:00","problems":[],"ecosystem":"maven","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://github.com/square/retrofit","github":"https://github.com/square/retrofit","docs":"https://appdoc.app/artifact/com.squareup.retrofit2/adapter-rxjava2/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["http-client"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-15","next_check":"2026-12-12","install_tag":null}}