public static void Login() {
  if (userid == "" || user_sig == "")
  {
      return;
  }
  TIMResult res = TencentIMSDK.Login(userid, user_sig, (int code, string desc, string json_param, string user_data)=>{
    // 处理登录回调逻辑
  });

public static void GetLoginUserID()
  {
    StringBuilder userId = new StringBuilder(128);

    TIMResult res = TencentIMSDK.GetLoginUserID(userId);

    Debug.Log(userId.ToString());
  }

 public static void GetLoginStatus()
  {
    TIMLoginStatus res = TencentIMSDK.GetLoginStatus();
  }

public static void Logout()
  {
    TIMResult res = TencentIMSDK.Logout((int code, string desc, string json_param, string user_data)=>{
    // 处理登出回调逻辑
    });
  }