Infinum Android Talks #16 - Retrofit 2 by Kristijan Jurkovic
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Retrofit 2.0 is an updated version of Retrofit, a type-safe REST client for Android and Java. Some key differences in Retrofit 2.0 include calls returning Call objects instead of Responses, OkHttp now being required, and improved URL handling. Retrofit 2.0 also features enhanced converter support to serialize and deserialize JSON and XML to and from POJO objects using libraries like Gson, Jackson, and Moshi.
Infinum Android Talks #16 - Retrofit 2 by Kristijan Jurkovic
- 4. WHAT’S DIFFERENT? com.squareup.retrofit > com.squareup.retrofit2 Converters Rest interface methods return Call<T> OkHttp is required Security exception if no Internet permission RestAdapter > Retrofit
- 5. CALL<T> call.enqueue(new Callback<T> { … }) call.execute(); call.cancel();
- 6. ONRESPONSE response.isSuccess(); response.code(); response.body(); response.errorBody().string();
- 7. URL HANDLING same as web <a href=“…” /> handling @GET(“blog”) Base url: http://www.infinum.co/api/v1 Result: http://www.infinum.co/api/blog Base url: http://www.infinum.co/api/v1/ Result: http://www.infinum.co/api/v1/blog
- 8. URL HANDLING @GET(“/blog”) Base url: http://www.infinum.co/api/v1 Result: http://www.infinum.co/blog @GET(“http://www.infinum.co/api/v1/blog”) @GET void get(@Url String url);
- 9. LOG
- 10. CONVERTERS .addConverterFactory({pass in converter here}); Gson: com.squareup.retrofit:converter-gson Jackson: com.squareup.retrofit:converter-jackson Moshi: com.squareup.retrofit:converter-moshi Protobuf: com.squareup.retrofit:converter-protobuf Wire: com.squareup.retrofit:converter-wire Simple XML: com.squareup.retrofit:converter-simplexml Converter.Factory interface
- 11. CONVERTERS .addConverterFactory({pass in converter here}); Gson gson = new GsonBuilder() ... add type converters here .create(); Retrofit retrofit = new Retrofit.Builder() .baseUrl(“http://www.infinum.co/api/”) .addConverterFactory(GsonConverterFactory.create(gson)) .build();
- 12. Any questions? KRISTIJAN.JURKOVIC@INFINUM.CO @KJURKOVIC Visit infinum.co or find us on social networks: infinum.co infinumco infinumco infinum