Retrofit 2 addQueryParam replacement

Question

In previous retrofit versions it was possible to add an interceptor and use that to add query parameters that were globally needed for example:

 .setRequestInterceptor(new RequestInterceptor() {
                    @Override
                    public void intercept(RequestFacade requestFacade) {
                        requestFacade.addQueryParam("platform", "android");
                        requestFacade.addQueryParam("app_version", com.package.BuildConfig.VERSION_NAME);


                }
            })

With the new implementation, it's required that you use OkHttpClient.interceptors. With this new approach, how would one append parameters without removing the original paramaters?

Answer 1

Here is an okhttp implementation --

OkHttpClient client = new OkHttpClient();
client.interceptors().add(new Interceptor() {
    @Override
    public com.squareup.okhttp.Response intercept(Chain chain) throws IOException {
        Request request = chain.request();
        HttpUrl url = request.httpUrl().newBuilder()
                     .addQueryParameter("platform", "android")
                     .addQueryParameter("app_version", com.package.BuildConfig.VERSION_NAME)
                     .build();
        Request newRequest = chain.request().newBuilder().url(url).build();
        return chain.proceed(newRequest);
    }
});

Add the client to your retrofit --

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl("http://www.example.com")
    .client(client)         
    .build();