@Override
  public boolean onContextItemSelected(MenuItem item) {
    boolean handled = false;
    boolean deleteMessage = false;
    if (item.getItemId() == R.id.delete_message) {
      deleteMessage = true;
      handled = true;
    } else if (item.getItemId() == R.id.delete_conversation) {
      deleteMessage = false;
      handled = true;
    }
    EMConversation tobeDeleteCons =
        adapter.getItem(((AdapterContextMenuInfo) item.getMenuInfo()).position);
    // 删除此会话
    EMChatManager.getInstance()
        .deleteConversation(tobeDeleteCons.getUserName(), tobeDeleteCons.isGroup(), deleteMessage);
    InviteMessgeDao inviteMessgeDao = new InviteMessgeDao(getActivity());
    inviteMessgeDao.deleteMessage(tobeDeleteCons.getUserName());
    adapter.remove(tobeDeleteCons);
    adapter.notifyDataSetChanged();

    // 更新消息未读数
    ((HxMainActivity) getActivity()).updateUnreadLabel();

    return handled ? true : super.onContextItemSelected(item);
  }
 /** 刷新页面 */
 public void refresh() {
   conversationList.clear();
   conversationList.addAll(loadConversationsWithRecentChat());
   if (adapter != null) adapter.notifyDataSetChanged();
 }