How To Use Autovalue With Retrofit 2?

I've got AutoValue (and the android-apt plugin) working in a project, and I'm aware of Ryan Harter's gson extension for AutoValue, but how do I hook Retrofit 2 up to use the extens

Solution 1:

[update] The library have changed a bit, check more here: https://github.com/rharter/auto-value-gson

I was able to make it work like this. I hope it will help you.

• Import in your gradle app file

  apt 'com.ryanharter.auto.value:auto-value-gson:0.3.1'

• Create object with autovalue:

  @AutoValuepublicabstractclassSignIn {    
      @SerializedName("signin_token")publicabstract String signinToken();
      @SerializedName("user")publicabstract Profile profile();
  
      publicstatic TypeAdapter<SignIn> typeAdapter(Gson gson) {
          returnnewAutoValue_SignIn.GsonTypeAdapter(gson);
      }
  }
  

• Create your Type Adapter Factory (Skip if using version > 0.3.0)

  publicclassAutoValueGsonTypeAdapterFactoryimplementsTypeAdapterFactory {
  
      public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
          Class<? super T> rawType = type.getRawType();
  
          if (rawType.equals(SignIn.class)) {
              return (TypeAdapter<T>) SignIn.typeAdapter(gson);
          } 
  
          returnnull;
      }
  }
  

• Create your Gson converter with your GsonBuilder

  GsonConverterFactorygsonConverterFactory= GsonConverterFactory.create(
          newGsonBuilder()
                  .registerTypeAdapterFactory(newAutoValueGsonTypeAdapterFactory())
                  .create());
  

• Add it to your retrofit builder

  Retrofitretrofit=newRetrofit
          .Builder()
          .addConverterFactory(gsonConverterFactory)
          .baseUrl("http://url.com/")
          .build()
  

• Do your request

• Enjoy

Bonus live template: In your autovalue class, type avtypeadapter then autocomplete to generate the type adapter code. To work you need to add this as a live template in Android Studio.

public static TypeAdapter<$class$> typeAdapter(Gson gson) {
    return new AutoValue_$class$.GsonTypeAdapter(gson);
}

How to create and use the live template.

Solution 2:

Here's a Gist by Jake Wharton for a Gson TypeAdapterFactory that just requires you add an annotation to all of your AutoValue classes that require working with Gson https://gist.github.com/JakeWharton/0d67d01badcee0ae7bc9

Works great for me.

Here's some proguard help too..

-keep class **.AutoValue_*
-keepnames @yourpackage.AutoGson class *