您的界面应如下所示:

public interface GitHubAPI { 
    @GET("/users/basil2style") 
    public void getFeed( Callback<GitHub> response);
} 

和您的回电:

gitapi.getFeed(new Callback<GitHub>() {
            @Override 
            public void success(GitHub github, Response response) { 
                Github example = github; 
                //Log.d("Size: ", Integer.toString(examplelist.size())); 
            } 

            @Override 
            public void failure(RetrofitError error) { 
                Log.d("Error: ", error.getLocalizedMessage()); 
            } 
        });