synchronized void reset() {
    isSyncingGroupsWithServer = false;
    isSyncingContactsWithServer = false;
    isSyncingBlackListWithServer = false;

    hxModel.setGroupsSynced(false);
    hxModel.setContactSynced(false);
    hxModel.setBlacklistSynced(false);

    isGroupsSyncedWithServer = false;
    isContactsSyncedWithServer = false;
    isBlackListSyncedWithServer = false;

    alreadyNotified = false;
  }
 public void setHXId(String hxId) {
   if (hxId != null) {
     if (hxModel.saveHXId(hxId)) {
       this.hxId = hxId;
     }
   }
 }
  /**
   * please make sure you have to get EMChatOptions by following method and set related options
   * EMChatOptions options = EMChatManager.getInstance().getChatOptions();
   */
  protected void initHXOptions() {
    Log.d(TAG, "init HuanXin Options");

    // 获取到EMChatOptions对象
    EMChatOptions options = EMChatManager.getInstance().getChatOptions();
    // 默认添加好友时,是不需要验证的,改成需要验证
    options.setAcceptInvitationAlways(hxModel.getAcceptInvitationAlways());
    // 默认环信是不维护好友关系列表的,如果app依赖环信的好友关系,把这个属性设置为true
    options.setUseRoster(hxModel.getUseHXRoster());
    // 设置是否需要已读回执
    options.setRequireAck(hxModel.getRequireReadAck());
    // 设置是否需要已送达回执
    options.setRequireDeliveryAck(hxModel.getRequireDeliveryAck());
    // 设置从db初始化加载时, 每个conversation需要加载msg的个数
    options.setNumberOfMessagesLoaded(1);

    notifier = createNotifier();
    notifier.init(appContext);

    notifier.setNotificationInfoProvider(getNotificationListener());
  }
  /**
   * this function will initialize the HuanXin SDK
   *
   * @return boolean true if caller can continue to call HuanXin related APIs after calling onInit,
   *     otherwise false.
   *     <p>环信初始化SDK帮助函数 返回true如果正确初始化,否则false,如果返回为false,请在后续的调用中不要调用任何和环信相关的代码
   *     <p>for example: 例子:
   *     <p>public class DemoHXSDKHelper extends HXSDKHelper
   *     <p>HXHelper = new DemoHXSDKHelper(); if(HXHelper.onInit(context)){ // do HuanXin related
   *     work }
   */
  public synchronized boolean onInit(Context context) {
    if (sdkInited) {
      return true;
    }

    appContext = context;

    // create HX SDK model
    hxModel = createModel();

    // create a defalut HX SDK model in case subclass did not provide the model
    if (hxModel == null) {
      hxModel = new DefaultHXSDKModel(appContext);
    }

    int pid = android.os.Process.myPid();
    String processAppName = getAppName(pid);

    Log.d(TAG, "process app name : " + processAppName);

    // 如果app启用了远程的service,此application:onCreate会被调用2次
    // 为了防止环信SDK被初始化2次,加此判断会保证SDK被初始化1次
    // 默认的app会在以包名为默认的process name下运行,如果查到的process name不是app的process name就立即返回
    if (processAppName == null || !processAppName.equalsIgnoreCase(hxModel.getAppProcessName())) {
      Log.e(TAG, "enter the service process!");

      // 则此application::onCreate 是被service 调用的,直接返回
      return false;
    }

    // 初始化环信SDK,一定要先调用init()
    EMChat.getInstance().init(context);

    // 设置sandbox测试环境
    if (hxModel.isSandboxMode()) {
      EMChat.getInstance().setEnv(EMEnvMode.EMSandboxMode);
    }

    if (hxModel.isDebugMode()) {
      // set debug mode in development process
      EMChat.getInstance().setDebugMode(true);
    }

    Log.d(TAG, "initialize EMChat SDK");

    initHXOptions();
    initListener();

    syncGroupsListeners = new ArrayList<HXSyncListener>();
    syncContactsListeners = new ArrayList<HXSyncListener>();
    syncBlackListListeners = new ArrayList<HXSyncListener>();

    isGroupsSyncedWithServer = hxModel.isGroupsSynced();
    isContactsSyncedWithServer = hxModel.isContactSynced();
    isBlackListSyncedWithServer = hxModel.isBacklistSynced();

    sdkInited = true;
    return true;
  }
 public void setPassword(String password) {
   if (hxModel.savePassword(password)) {
     this.password = password;
   }
 }
 public String getPassword() {
   if (password == null) {
     password = hxModel.getPwd();
   }
   return password;
 }
 public String getHXId() {
   if (hxId == null) {
     hxId = hxModel.getHXId();
   }
   return hxId;
 }