@Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(com.xuhai.telescopes.R.layout.em_activity_group_pick_contacts);

    if (exitingMembers == null) exitingMembers = new ArrayList<String>();
    // 获取好友列表
    final List<EaseUser> alluserList = new ArrayList<EaseUser>();
    for (EaseUser user : MyHelper.getInstance().getContactList().values()) {
      if (!user.getUsername().equals(Constant.NEW_FRIENDS_USERNAME)
          & !user.getUsername().equals(Constant.GROUP_USERNAME)
          & !user.getUsername().equals(Constant.CHAT_ROOM)
          & !user.getUsername().equals(Constant.CHAT_ROBOT)) alluserList.add(user);
    }
    // 对list进行排序
    Collections.sort(
        alluserList,
        new Comparator<EaseUser>() {

          @Override
          public int compare(EaseUser lhs, EaseUser rhs) {
            if (lhs.getInitialLetter().equals(rhs.getInitialLetter())) {
              return lhs.getNick().compareTo(rhs.getNick());
            } else {
              if ("#".equals(lhs.getInitialLetter())) {
                return 1;
              } else if ("#".equals(rhs.getInitialLetter())) {
                return -1;
              }
              return lhs.getInitialLetter().compareTo(rhs.getInitialLetter());
            }
          }
        });

    listView = (ListView) findViewById(com.xuhai.telescopes.R.id.list);
    contactAdapter =
        new PickContactAdapter(
            this, com.xuhai.telescopes.R.layout.em_row_contact_with_checkbox, alluserList);
    listView.setAdapter(contactAdapter);
    ((EaseSidebar) findViewById(com.xuhai.telescopes.R.id.sidebar)).setListView(listView);
    listView.setOnItemClickListener(
        new OnItemClickListener() {

          @Override
          public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            CheckBox checkBox = (CheckBox) view.findViewById(com.xuhai.telescopes.R.id.checkbox);
            checkBox.toggle();
          }
        });
  }
  @Override
  public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
    super.onSuccess(statusCode, headers, response);
    List<String> team = new ArrayList<>();
    Map<String, List<String>> teamUsers = new HashMap();

    if (statusCode == 200) {
      try {
        JSONArray allTeam = response.getJSONArray("groups");
        Map<String, EaseUser> allUsers = new HashMap<String, EaseUser>(); // 所有用户

        for (int i = 0; i < allTeam.length(); i++) {

          // 获得分组名
          String teamName = allTeam.getJSONObject(i).getString("name");
          Log.e("FromServer获得分组", teamName);
          team.add(teamName);

          // 获得这个分组的所有用户User
          JSONArray users = allTeam.getJSONObject(i).getJSONArray("users");
          Log.e("这个分组用户", users.toString());
          List<String> oneLineUsersNameList = new ArrayList<>(); // 这个分组的所有用户名
          for (int j = 0; j < users.length(); j++) {
            JSONObject userjson = users.getJSONObject(j);
            Log.e("FromServer获得用户", userjson.toString());

            oneLineUsersNameList.add(userjson.getString("name"));
            EaseUser user = null;
            user = setUserFromJson(userjson);
            allUsers.put(user.getUsername(), user);
            Log.e("allUser", allUsers.toString());
          }
          teamUsers.put(teamName, oneLineUsersNameList);
        }

        MyHelper.getInstance().setTeam(team);
        MyHelper.getInstance().setTeamUsers(teamUsers);
        // 把所有用户存到内存
        // 存入内存
        MyHelper.getInstance().getContactList().clear();
        MyHelper.getInstance().getContactList().putAll(allUsers);
        // 存入db
        UserDao dao = new UserDao(MyApplication.applicationContext);
        List<EaseUser> users = new ArrayList<EaseUser>(allUsers.values());
        dao.saveContactList(users);

      } catch (JSONException e) {
        e.printStackTrace();
        Log.e("FromServer", "解析分组信息出错");
      } catch (Exception en) {
        en.printStackTrace();
      }
    }
  }