dknaack dknaack - 4 months ago 59
Android Question

Getting Header from Response (Retrofit / OkHttp Client)

I am using Retrofit with the OkHttp Client and Jackson for Json Serialization and want to get the header of the response.

I know that i can extend the OkClient
and intercept it. But this comes before the deserialization process starts.

What i basically needs is to get the header alongside with the deserialized Json Object.

Answer

Well technically if you use the Callback asynchronous version of the interface,

@GET("/user")
void getUser(Callback<User> callback)

Then your callback will receive a Response object

    Callback<User> user = new Callback<User>() {
        @Override
        public void success(User user, Response response) {

        }

        @Override
        public void failure(RetrofitError error) {

        }
    }

Which has a method called getHeaders()

    Callback<User> user = new Callback<User>() {
        @Override
        public void success(User user, Response response) {
            List<Header> headerList = response.getHeaders();
            for(Header header : headerList) {
                Log.d(TAG, header.getName() + " " + header.getValue());
            }
        }
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