無法將參數類型“Context”分配給參數類型“BuildContext”

Question

我正在嘗試創建一個帶有 flutter 和 firebase 的登錄頁面，導航器在所有文件中都正常工作，但是當進入此頁面時，它在導航器的上下文中顯示錯誤，錯誤是
'不能將參數類型 'Context' 分配給參數類型 'BuildContext'。 以下是我的flutter版本的詳細信息：版本：1.0.0+1

環境：sdk：">=2.1.0 <3.0.0"

依賴項：flutter：sdk：flutter curve_navigation_bar：^0.3.2 oktoast：firebase_auth：^0.5.20 請幫我解決這個問題

 import 'package:path/path.dart';
    import 'package:codej/effects.dart';
    import 'package:flutter/material.dart';
    import 'package:oktoast/oktoast.dart';
    import 'package:firebase_auth/firebase_auth.dart';

    class Auth extends StatefulWidget {
      @override
    _AuthState createState() => new _AuthState();
    }

    class _AuthState extends State<Auth>{

    String _email, _password;
    final GlobalKey<FormState> formkey = GlobalKey<FormState>();
      Widget build(BuildContext context) {
        // TODO: implement build
        return Scaffold(appBar: AppBar(
          title: Text("Authentication"),
        ),
        // TODO: implement build
    body: Form(
      key: formkey,
      child: Column(
        children: <Widget>[
    TextFormField(
      validator: (input){
        if(input.isEmpty){
          showToastWidget(Text("please enter your user name"));
        }
      },
      onSaved: (input) => _email = input,
      decoration: InputDecoration(
        labelText: 'Email'
      ),
    ),
    TextFormField(
      validator: (input){
        if(input.length < 6){
          showToastWidget(Text("please enter your password atleast 6 characters"));
        }
      },
      onSaved: (input) => _password = input,
      decoration: InputDecoration(
        labelText: 'Password'
      ),
      obscureText: true,
    ),
    RaisedButton(onPressed: (){

    },
    child: Text("Sign in"),)
        ],
      )),
        );
      }
      void signinAuth() async{
        final formState = formkey.currentState;
        if(formState.validate()){
        formState.save();
        try{
     FirebaseUser user = await FirebaseAuth.instance.signInWithEmailAndPassword(email: _email, password: _password);
      Navigator.push(context, MaterialPageRoute(builder: (context) => BottomNav())); //BottomNav loacted in other file  
        }catch(e){
          print(e.message);
        }

        }

      }
    }

Answer 1

這在我的電腦上工作，所以它是版本問題。 嘗試更新您的 flutter 和 dart sdk，如果這不是您的解決方案，只需像這樣將 BuildContext 傳遞給您的 signinAuth

void signinAuth(BuildContext context) async {
    final formState = formkey.currentState;
    if (formState.validate()) {
      formState.save();
      try {
        FirebaseUser user = await FirebaseAuth.instance
            .signInWithEmailAndPassword(email: _email, password: _password);
        Navigator.push(
            context,
            MaterialPageRoute(
                builder: (context) =>
                    BottomNav())); //BottomNav loacted in other file
      } catch (e) {
        print(e.message);
      }
    }
  }