GraphRequest request = GraphRequest.newGraphPathRequest(AccessToken.getCurrentAccessToken(), "/me/feed", new GraphRequest.Callback() {
    @Override
    public void onCompleted(GraphResponse response) {
        // Gson
        // Gson gson = new Gson();
        // Posts posts = gson.fromJson(response.getJSONObject().toString(), Posts.class);
        // or
        // jackson
        // ObjectMapper mapper = new ObjectMapper();
        // Posts posts = mapper.readValue(response.getJSONObject().toString(), Posts.class);
        // or
        // LoganSquare
        // Posts posts = LoganSquare.parse(response.getJSONObject().toString(), Posts.class);
        // or manual

        // hasNext?  request = response.getRequestForPagedResults(GraphResponse.PagingDirection.NEXT); blah, blah
    }
});
GraphRequest.executeBatchAsync(new GraphRequestBatch(request));

Facebook facebook = Facebook.create(activity);

Observable<Post> myPosts = facebook.getPosts();
myPosts.take(100).forEach(post -> System.out.println(post.id()));

@RetroFacebook
abstract class Facebook {
    @GET("/me/feed")
    abstract Observable<Post> getPosts();

    // ...
}

String zuckId = "4";
Observable<Post> zuckPosts = facebook.getPosts(zuckId);
zuckPosts.forEach(post -> System.out.println(post.id()));

@RetroFacebook
abstract class Facebook {
    @GET("/{user-id}/feed")
    abstract Observable<Post> getPosts(@Path("user-id") String userId);
}

Observable<Photo> zuckUploadedPhotos = facebook.getUploadedPhotos("4");
zuckUploadedPhotos.forEach(photo -> System.out.println(photo.id()));

@RetroFacebook
abstract class Facebook {
    @GET("/{user-id}/photos?type=uploaded")
    abstract Observable<Photo> getUploadedPhotos() String userId);
}

Observable<Photo> myUploadedPhotos = facebook.getPhotosOfType("uploaded");
myPhotos.forEach(photo -> System.out.println(photo.id()));

@RetroFacebook
abstract class Facebook {
    @GET("/me/photos")
    abstract Observable<Post> getPhotosOfType(@Query("type") String type); // getPhotosOfType("uploaded") -> /me/photos?type=uploaded
}

facebook.publish(Post.builder()
    .message("yo")
    .name("RetroFacebook")
    .caption("RetroFacebook")
    .description("Retrofit Facebook Android SDK")
    .picture("https://raw.githubusercontent.com/yongjhih/RetroFacebook/master/art/retrofacebook.png")
    .link("https://github.com/yongjhih/RetroFacebook")
    .build()).subscribe();

@RetroFacebook
abstract class Facebook {
    @POST("/me/feed")
    abstract Observable<Struct> publish(@Body Post post);
}

@RetroFacebook
abstract class Facebook {
    @POST(value = "/me/feed", permissions = "publish_actions") // <- request `publish_actions` permission while `publish(post)`.
    abstract Observable<Struct> publish(@Body Post post);
}

@RetroFacebook
abstract class Facebook {
    @GET("/me/feed")
    abstract Observable<Post> getPosts();

    // ...
}

@AutoJson
public abstract class Post {
    @Nullable
    @AutoJson.Field
    public abstract String id();

    @Nullable
    @AutoJson.Field(name = "is_hidden")
    public abstract Boolean isHidden();

    // ...
}

facebook.getPosts(new Callback<>() {
    @Override public void onCompleted(List<Post> posts) {
        // ...
    }
    @Override public void onError(Throwable e) {
        // ...
    }
});

@RetroFacebook
abstract class Facebook {
    @GET("/me/feed")
    abstract void getPosts(Callback<Post> callback);
}