Overwrite cache headers in Java to hopefully "fix" Picasso caching issue with Firebase storage

overwriteCacheHeaders.java

public static Client buildOkHttpClient(boolean cacheEnable) {
        Cache cache = null;
        OkHttpClient client = new OkHttpClient();
        if (cacheEnable) {
            File cacheDirectory = new File(MainApplication.getInstance().getCacheDir().getAbsolutePath(), "HttpCache");
            try {
                cache = new Cache(cacheDirectory, CACHE_SIZE);
            } catch (IOException e) {
                e.printStackTrace();
            }
            client.setCache(cache);
            client.interceptors().add(REWRITE_CACHE_CONTROL_INTERCEPTOR);
        }
        return new OkClient(client);
    }

    /** Dangerous interceptor that rewrites the server's cache-control header. */
    private static final Interceptor REWRITE_CACHE_CONTROL_INTERCEPTOR = new Interceptor() {
        @Override public Response intercept(Chain chain) throws IOException {
            Response originalResponse = chain.proceed(chain.request());
            return originalResponse.newBuilder()
                    .header("Cache-Control", String.format("max-age=%d, max-stale=%d", MAX_AGE, MAX_STALE))
                    .build();
        }
    };

From here: https://github.com/square/okhttp/issues/1265

From here