void SetUserInfoUI(FbUser user)
    {
        m_Connect.GetComponentInChildren <Text>().text = "Sing out";
        m_UserName.text = user.Name;
        m_UserMail.text = user.Email;

        user.GetProfileImage(FbProfileImageSize.Large, (texture) =>
        {
            m_UserAvatar.texture = texture;
        });
    }