How to implement cookie handling on Android using OkHttp?

Question

Using OkHttp by Square https://github.com/square/okhttp, how can I:

1. Retrieve a cookie returned from the server
2. Store the cookie for upcoming requests<

Answer 1

For OkHttp3, a simple accept-all, non-persistent CookieJar implementation can be as follows:

OkHttpClient client = new OkHttpClient.Builder()
    .cookieJar(new CookieJar() {
        private final HashMap> cookieStore = new HashMap<>();

        @Override
        public void saveFromResponse(HttpUrl url, List cookies) {
            cookieStore.put(url, cookies);
        }

        @Override
        public List loadForRequest(HttpUrl url) {
            List cookies = cookieStore.get(url);
            return cookies != null ? cookies : new ArrayList();
        }
    })
    .build();

Or if you prefer to use java.net.CookieManager, include okhttp-urlconnection in your project, which contains JavaNetCookieJar, a wrapper class that delegates to java.net.CookieHandler:

dependencies {
    compile "com.squareup.okhttp3:okhttp:3.0.0"
    compile "com.squareup.okhttp3:okhttp-urlconnection:3.0.0"
}

---

CookieManager cookieManager = new CookieManager();
cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ALL);
OkHttpClient client = new OkHttpClient.Builder()
    .cookieJar(new JavaNetCookieJar(cookieManager))
    .build();