flutter跳转路由后怎么取消左上角的返回箭头

Question

我打算在登陆成功跳转其他页面后，没有左上角的返回箭头，要如何实现，我把其中的路由方法换成pushAndRemoveUntil也是不行，出现报错，那要怎么办

这是登陆界面

这是登陆后的页面，我希望这个左上方的返回箭头消失

以下是部分代码
登陆界面

class Myapp extends StatefulWidget {
  const Myapp({Key? key}) : super(key: key);

  @override
  State<Myapp> createState() => _MyappState();
}

class _MyappState extends State<Myapp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'test',
      home: Scaffold(
        body: LoginScreen(),
    ),
    );
  }
}


class LoginScreen extends StatefulWidget {
  @override
  _LoginScreenState createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
  final _formKey = GlobalKey<FormState>();
  final _usernameController = TextEditingController();
  final _passwordController = TextEditingController();

  Future<void> _login() async {
    final username = _usernameController.text;
    final password = _passwordController.text;

    try {
      final response = await Dio().post(
        'http://192.168.2.7:5000/login',
        data: {'username': username, 'password': password},
      );
      if(response.statusCode==200){
        Navigator.push(context,
            MaterialPageRoute(builder: (context) {
              return const Mytab();
            }));
        Navigator.pop(context);
      }

      // handle successful login
    } catch (e) {
      // handle login failure
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Login'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              TextFormField(
                controller: _usernameController,
                decoration: InputDecoration(
                  labelText: 'Username',
                ),
                validator: (value) {
                  if (value!.isEmpty) {
                    return 'Please enter your username';
                  }
                  return null;
                },
              ),
              TextFormField(
                controller: _passwordController,
                decoration: InputDecoration(
                  labelText: 'Password',
                ),
                obscureText: true,
                validator: (value) {
                  if (value!.isEmpty) {
                    return 'Please enter your password';
                  }
                  return null;
                },
              ),
              SizedBox(height: 16.0),
              ElevatedButton(
                child: Text('Login'),
                onPressed: () {
                  if (_formKey.currentState!.validate()) {
                    _login();
                  }
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

void main(){
  runApp(Myapp());
}

然后是跳转有底部导航栏的页面代码

class Mytab extends StatefulWidget {
  const Mytab({Key? key}) : super(key: key);

  @override
  State<Mytab> createState() => _MytabState();
}

class _MytabState extends State<Mytab> {
  int _currentIndex=0;
  final List<Widget> _pages= [
    Myhome(),
    jijin(),
    Myperson()
  ];
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Flutter App")),
      body: _pages[_currentIndex],
      bottomNavigationBar: BottomNavigationBar(
          currentIndex: _currentIndex,
          onTap:(int v){
            setState((){
              _currentIndex=v;
            });
          },
          items: const [
            BottomNavigationBarItem(
                icon: Icon(Icons.home),
                label: "首页"
            ),
            BottomNavigationBarItem(
                icon: Icon(Icons.star_rounded),
                label: "我的仓库"
            ),
            BottomNavigationBarItem(
                icon: Icon(Icons.account_circle),
                label: "个人"
            ),
          ]),
    );;
  }
}

Answer 1

用下面的方式 进行跳转 , 没有返回按钮 :

Navigator.pushReplacement( context,  MaterialPageRoute( ... ));