public abstract class BaseRecyclerAdapter<T, VH extends RecyclerView.ViewHolder> extends RecyclerView.Adapter<VH> {

    protected List<T> mDatas = new ArrayList<>();
    protected Context mContext;
    protected LayoutInflater inflater;
    AdapterView.OnItemClickListener mItemClickListener;

    public BaseRecyclerAdapter(List<T> mDatas, Context mContext) {
        this.mDatas = mDatas;
        this.mContext = mContext;
        inflater = LayoutInflater.from(mContext);
    }

    @Override
    public void onBindViewHolder(VH holder, int position) {
        final T item = getItem(position);
        bindItemData(holder, item, position);
        setupOnItemClick(holder, position);
    }

    protected abstract void bindItemData(VH viewHolder, T data, int position);

    protected void setupOnItemClick(final VH viewHolder, final int position) {
        if (mItemClickListener != null) {
            viewHolder.itemView.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    mItemClickListener.onItemClick(null, viewHolder.itemView, position, position);
                }
            });
        }
    }

    @Override
    public int getItemCount() {
        return mDatas.size();
    }

    public T getItem(int position) {
        position = Math.max(0, position);
        return mDatas.get(position);
    }

    public List<T> getDataSource() {
        return mDatas;
    }

    public void addData(List<T> newItems) {
        if (newItems != null) {
            mDatas.addAll(newItems);
            notifyDataSetChanged();
        }
    }

    public void updateListViewData(List<T> lists) {
        mDatas.clear();
        if (lists != null) {
            mDatas.addAll(lists);
            notifyDataSetChanged();
        }
    }

    public void setOnItemClickListener(AdapterView.OnItemClickListener listener) {
        this.mItemClickListener = listener;
    }

}

public class NotesAdapter extends BaseRecyclerAdapter<NoteItem, NotesAdapter.NotesViewHolder> {

    public NotesAdapter(List<NoteItem> mDatas, Context mContext) {
        super(mDatas, mContext);
    }

    @Override
    public NotesViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View contentView = LayoutInflater.from(mContext)
                .inflate(R.layout.recycler_item_note, parent, false);
        NotesViewHolder vh = new NotesViewHolder(contentView);
        return vh;
    }

    @Override
    protected void bindItemData(NotesViewHolder viewHolder, NoteItem data, int position) {
        viewHolder.titleTxt.setText(data.getTitle());
        viewHolder.timeTxt.setText(data.getCreatedTime());
        viewHolder.tagTxt.setText(data.getTags().size() != 0 ? data.getTags().get(0) : "other");
    }

    static class NotesViewHolder extends RecyclerView.ViewHolder {
        @Bind(R.id.title_txt)
        TextView titleTxt;
        @Bind(R.id.time_txt)
        TextView timeTxt;
        @Bind(R.id.tag_txt)
        TextView tagTxt;

        NotesViewHolder(View view) {
            super(view);
            ButterKnife.bind(this, view);
        }

    }
}

class TestMethodA {
    static String name = "akioss";
}

class TestMethodB {
    static final String name = "akioss";
}

private Request networkRequest(Request request) throws IOException {
  Request.Builder result = request.newBuilder();

  //例行省略.....

  CookieHandler cookieHandler = client.getCookieHandler();
  if (cookieHandler != null) {
    // Capture the request headers added so far so that they can be offered to the CookieHandler.
    // This is mostly to stay close to the RI; it is unlikely any of the headers above would
    // affect cookie choice besides "Host".
    Map<String, List<String>> headers = OkHeaders.toMultimap(result.build().headers(), null);

    Map<String, List<String>> cookies = cookieHandler.get(request.uri(), headers);

    // Add any new cookies to the request.
    OkHeaders.addCookies(result, cookies);
  }

  //例行省略....

  return result.build();
}

public void readResponse() throws IOException {
  //例行省略....

  receiveHeaders(networkResponse.headers());

  //例行省略....
}

public void receiveHeaders(Headers headers) throws IOException {
  CookieHandler cookieHandler = client.getCookieHandler();
  if (cookieHandler != null) {
    cookieHandler.put(userRequest.uri(), OkHeaders.toMultimap(headers, null));
  }
}

private CookieHandler cookieHandler;
public OkHttpClient setCookieHandler(CookieHandler cookieHandler) {
  this.cookieHandler = cookieHandler;
  return this;
}

public CookieHandler getCookieHandler() {
  return cookieHandler;
}

OkHttpClient client = new OkHttpClient();
client.setCookieHandler(CookieHandler cookieHanlder);

private Request networkRequest(Request request) throws IOException {
    Request.Builder result = request.newBuilder();

    //例行省略....
    
    List<Cookie> cookies = client.cookieJar().loadForRequest(request.url());
    if (!cookies.isEmpty()) {
      result.header("Cookie", cookieHeader(cookies));
    }

    //例行省略....

    return result.build();
  }

private String cookieHeader(List<Cookie> cookies) {
    StringBuilder cookieHeader = new StringBuilder();
    for (int i = 0, size = cookies.size(); i < size; i++) {
      if (i > 0) {
        cookieHeader.append("; ");
      }
      Cookie cookie = cookies.get(i);
      cookieHeader.append(cookie.name()).append('=').append(cookie.value());
    }
    return cookieHeader.toString();
  }

public void receiveHeaders(Headers headers) throws IOException {
    if (client.cookieJar() == CookieJar.NO_COOKIES) return;

    List<Cookie> cookies = Cookie.parseAll(userRequest.url(), headers);
    if (cookies.isEmpty()) return;

    client.cookieJar().saveFromResponse(userRequest.url(), cookies);
  }

public interface CookieJar {
  /** A cookie jar that never accepts any cookies. */
  CookieJar NO_COOKIES = new CookieJar() {
    @Override public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
    }

    @Override public List<Cookie> loadForRequest(HttpUrl url) {
      return Collections.emptyList();
    }
  };

  /**
   * Saves {@code cookies} from an HTTP response to this store according to this jar's policy.
   *
   * <p>Note that this method may be called a second time for a single HTTP response if the response
   * includes a trailer. For this obscure HTTP feature, {@code cookies} contains only the trailer's
   * cookies.
   */
  void saveFromResponse(HttpUrl url, List<Cookie> cookies);

  /**
   * Load cookies from the jar for an HTTP request to {@code url}. This method returns a possibly
   * empty list of cookies for the network request.
   *
   * <p>Simple implementations will return the accepted cookies that have not yet expired and that
   * {@linkplain Cookie#matches match} {@code url}.
   */
  List<Cookie> loadForRequest(HttpUrl url);
}

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

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

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

public class PersistentCookieStore {
    private static final String LOG_TAG = "PersistentCookieStore";
    private static final String COOKIE_PREFS = "Cookies_Prefs";

    private final Map<String, ConcurrentHashMap<String, Cookie>> cookies;
    private final SharedPreferences cookiePrefs;


    public PersistentCookieStore(Context context) {
        cookiePrefs = context.getSharedPreferences(COOKIE_PREFS, 0);
        cookies = new HashMap<>();

        //将持久化的cookies缓存到内存中 即map cookies
        Map<String, ?> prefsMap = cookiePrefs.getAll();
        for (Map.Entry<String, ?> entry : prefsMap.entrySet()) {
            String[] cookieNames = TextUtils.split((String) entry.getValue(), ",");
            for (String name : cookieNames) {
                String encodedCookie = cookiePrefs.getString(name, null);
                if (encodedCookie != null) {
                    Cookie decodedCookie = decodeCookie(encodedCookie);
                    if (decodedCookie != null) {
                        if (!cookies.containsKey(entry.getKey())) {
                            cookies.put(entry.getKey(), new ConcurrentHashMap<String, Cookie>());
                        }
                        cookies.get(entry.getKey()).put(name, decodedCookie);
                    }
                }
            }
        }
    }

    protected String getCookieToken(Cookie cookie) {
        return cookie.name() + "@" + cookie.domain();
    }

    public void add(HttpUrl url, Cookie cookie) {
        String name = getCookieToken(cookie);

        //将cookies缓存到内存中 如果缓存过期 就重置此cookie
        if (!cookie.persistent()) {
            if (!cookies.containsKey(url.host())) {
                cookies.put(url.host(), new ConcurrentHashMap<String, Cookie>());
            }
            cookies.get(url.host()).put(name, cookie);
        } else {
            if (cookies.containsKey(url.host())) {
                cookies.get(url.host()).remove(name);
            }
        }

        //讲cookies持久化到本地
        SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
        prefsWriter.putString(url.host(), TextUtils.join(",", cookies.get(url.host()).keySet()));
        prefsWriter.putString(name, encodeCookie(new SerializableOkHttpCookies(cookie)));
        prefsWriter.apply();
    }

    public List<Cookie> get(HttpUrl url) {
        ArrayList<Cookie> ret = new ArrayList<>();
        if (cookies.containsKey(url.host()))
            ret.addAll(cookies.get(url.host()).values());
        return ret;
    }

    public boolean removeAll() {
        SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
        prefsWriter.clear();
        prefsWriter.apply();
        cookies.clear();
        return true;
    }

    public boolean remove(HttpUrl url, Cookie cookie) {
        String name = getCookieToken(cookie);

        if (cookies.containsKey(url.host()) && cookies.get(url.host()).containsKey(name)) {
            cookies.get(url.host()).remove(name);

            SharedPreferences.Editor prefsWriter = cookiePrefs.edit();
            if (cookiePrefs.contains(name)) {
                prefsWriter.remove(name);
            }
            prefsWriter.putString(url.host(), TextUtils.join(",", cookies.get(url.host()).keySet()));
            prefsWriter.apply();

            return true;
        } else {
            return false;
        }
    }

    public List<Cookie> getCookies() {
        ArrayList<Cookie> ret = new ArrayList<>();
        for (String key : cookies.keySet())
            ret.addAll(cookies.get(key).values());

        return ret;
    }

    /**
     * cookies 序列化成 string
     *
     * @param cookie 要序列化的cookie
     * @return 序列化之后的string
     */
    protected String encodeCookie(SerializableOkHttpCookies cookie) {
        if (cookie == null)
            return null;
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        try {
            ObjectOutputStream outputStream = new ObjectOutputStream(os);
            outputStream.writeObject(cookie);
        } catch (IOException e) {
            Log.d(LOG_TAG, "IOException in encodeCookie", e);
            return null;
        }

        return byteArrayToHexString(os.toByteArray());
    }

    /**
     * 将字符串反序列化成cookies
     *
     * @param cookieString cookies string
     * @return cookie object
     */
    protected Cookie decodeCookie(String cookieString) {
        byte[] bytes = hexStringToByteArray(cookieString);
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
        Cookie cookie = null;
        try {
            ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
            cookie = ((SerializableOkHttpCookies) objectInputStream.readObject()).getCookies();
        } catch (IOException e) {
            Log.d(LOG_TAG, "IOException in decodeCookie", e);
        } catch (ClassNotFoundException e) {
            Log.d(LOG_TAG, "ClassNotFoundException in decodeCookie", e);
        }

        return cookie;
    }

    /**
     * 二进制数组转十六进制字符串
     *
     * @param bytes byte array to be converted
     * @return string containing hex values
     */
    protected String byteArrayToHexString(byte[] bytes) {
        StringBuilder sb = new StringBuilder(bytes.length * 2);
        for (byte element : bytes) {
            int v = element & 0xff;
            if (v < 16) {
                sb.append('0');
            }
            sb.append(Integer.toHexString(v));
        }
        return sb.toString().toUpperCase(Locale.US);
    }

    /**
     * 十六进制字符串转二进制数组
     *
     * @param hexString string of hex-encoded values
     * @return decoded byte array
     */
    protected byte[] hexStringToByteArray(String hexString) {
        int len = hexString.length();
        byte[] data = new byte[len / 2];
        for (int i = 0; i < len; i += 2) {
            data[i / 2] = (byte) ((Character.digit(hexString.charAt(i), 16) << 4) + Character.digit(hexString.charAt(i + 1), 16));
        }
        return data;
    }
}

/**
     * 自动管理Cookies
     */
    private class CookiesManager implements CookieJar {
        private final PersistentCookieStore cookieStore = new PersistentCookieStore(getApplicationContext());

        @Override
        public void saveFromResponse(HttpUrl url, List<Cookie> cookies) {
            if (cookies != null && cookies.size() > 0) {
                for (Cookie item : cookies) {
                    cookieStore.add(url, item);
                }
            }
        }

        @Override
        public List<Cookie> loadForRequest(HttpUrl url) {
            List<Cookie> cookies = cookieStore.get(url);
            return cookies;
        }
    }