是否可以在一个小部件中两次使用SharedPreferences？

I tried to safe two ints with SharedPreferences in one file. I don´t know if that is possible, because I can only save one of them. I´m not sure if I made a mistake in the code or if it´s not possible to save to different values in one StatefulWidget. Does anybody see a mistake in my code or can tell me if it is theoretically possible to safe two values in one file? Below is the code of my two safe requests.

安全请求一项（一项有效）：

 int lastLoginInt = 1;
 String nameKey = "_key_name";
@override
  void initState() {
    super.initState();
  }

  Future<bool> saveLastLoginInt() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    return await preferences.setInt(nameKey, lastLoginInt);
  }

  Future<int> loadLastLoginInt() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    return preferences.getInt(nameKey);
  }

  setLastLoginInt() {
    loadLastLoginInt().then((value) {
      setState(() {
        lastLoginInt = value;
      });
    });
  }

这是我的第二个请求（不起作用）：

String nameKey1 = "_key_name2";
int countInt = 0;
Future<bool> saveCount() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    return await preferences.setInt(nameKey1, countInt);
  }

  Future<int> loadCount() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    return preferences.getInt(nameKey1);
  }

  setCount() {
    loadLastLoginInt().then((value) {
      setState(() {
        countInt = value;
      });
    });
  }

希望这是一个易于解决的问题。提前致谢！