iOS flutter中共享首选项和flutter toast插件缺少平台异常错误

Question

我在play商店上传了我的应用程序，但是当我为flutter应用程序创建IPA时，我收到了以下两个错误：

未处理的异常：MissingPluginException（在通道Ponnam Karthik/Flutter toast上找不到方法showToast的实现）

[✓] **Flutter (Channel stable, v1.12.13+hotfix.8, on Mac OS X 10.15.2 19C57, locale en-IN)**
 
[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
[✓] Xcode - develop for iOS and macOS (Xcode 11.3)
[✓] Android Studio (version 3.5)
[✓] Connected device (1 available)

Future<List> mainLogin() async {
  final response = await 
  http.post("$api_version/authentication/signin",
  body: {"email": email, "password": password});
    datauser = json.decode(response.body);

    if (datauser.length == 0) {
    setState(() {
    msg = "Login Fail";
    });
  } else {
    if (datauser['error_description'] == 'Invalid Login Details') {
      searchScaffoldKey.currentState.hideCurrentSnackBar();
      showLoginError(
        context, datauser['error_message'], 
        datauser['error_description']
      );
    } else if (datauser['success'] == 1) {
      searchScaffoldKey.currentState.hideCurrentSnackBar();
      Fluttertoast.showToast(
        msg: datauser['success_description'],
        toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.CENTER,
        timeInSecForIos: 1
      );

      //===============================================
      //Create a session of user

      SharedPreferences loginCresentials =
        await SharedPreferences.getInstance();
      loginCresentials.setString('User_id', datauser['results']['id']);
      loginCresentials.setString('User_email', datauser['results'].['email']);
      loginCresentials.setString(
        'User_fname', datauser['results']['first_name']
      );
      loginCresentials.setString(
        'User_lname', datauser['results']['last_name']
      );
      loginCresentials.setString(
        'User_password', datauser['results']['plain_password']);
      loginCresentials.setString('userType', datauser['results'].['userType']);
      loginCresentials?.setBool("isLoggedIn", true);

      Navigator.pushAndRemoveUntil(
        context,
        MaterialPageRoute(
          builder: (BuildContext context) => MyHome(
            initialIndex: 0,
          )
        ),
        ModalRoute.withName('/')
      );
    } else {
      SharedPreferences loginCresentials =
      await SharedPreferences.getInstance();
      loginCresentials?.setBool("isLoggedIn", false);
    }
  }
}

Answer 1

先使用flutter clean命令，然后重新运行应用程序