我怎样才能使我的代码井井有条,并在登录页面或注册页面后放置一些文本

how can i make my code organised well and put some text after the sign in page or sign up

   [enter image description here][1] [![enter image description here][1]][1]   import 'package:flutter/material.dart';
        import 'package:flutter/rendering.dart';
        import 'package:ionicons/ionicons.dart';
        
        
        void main() {
          runApp(const MyApp((), key:,));
        }
        
        class MyApp extends StatelessWidget {
          const MyApp(Type myApp, {required Key key}) : super(key: key);
        
          @override
          Widget build(BuildContext context) {
            return MaterialApp(
              title: 'Flutter Demo',
              debugShowCheckedModeBanner: false,
              theme: ThemeData(primarySwatch: Colors.blue),
              home: const SinginPage(key:,),
            );
          }
        }
        
        
        class SinginPage extends StatefulWidget {
          const SinginPage({required Key key}) : super(key: key);
          @override
          _SinginPageState createState() => _SinginPageState();
        }
        
        class _SinginPageState extends State<SinginPage> {
          bool obscureText = false;
        
          final TextEditingController _email = TextEditingController();
          final TextEditingController _password = TextEditingController();
        
          final emailGlobalKey = GlobalKey<FormState>();
          final passwordGlobalKey = GlobalKey<FormState>();
        
          @override
          Widget build(BuildContext context) {
            var currentWidth = MediaQuery.of(context).size.width;
            var small = currentWidth > 1201;
            var extraSmall = currentWidth > 1025;
        
            var Validators;
            return Scaffold(
              backgroundColor: Colors.white,
              body: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Container(
                    height: extraSmall ? MediaQuery.of(context).size.height : 0.0,
                    width: small
                        ? MediaQuery.of(context).size.width * 0.72
                        : extraSmall
                        ? MediaQuery.of(context).size.width - 500
                        : 0.0,
                    color: Colors.indigo[200],
                    child: Image.network(
                      'https://cdn.pixabay.com/photo/2021/10/11/13/12/website-6700615_960_720.png',
                      fit: BoxFit.cover,
                    ),
                  ),
                  Stack(
                    alignment: Alignment.topRight,
                    children: [
                      Container(
                        height: MediaQuery.of(context).size.height,
                        width: small ? MediaQuery.of(context).size.width * 0.28 : 500,
                        alignment: Alignment.center,
                        color: Colors.white,
                        child: Container(
                          padding: const EdgeInsets.all(60.0),
                          child: Column(
                            mainAxisAlignment: MainAxisAlignment.center,
                            children: [
                              const SizedBox(height: 45.0),
                              Container(
                                alignment: Alignment.topLeft,
                                child: const Text(
                                  'WELCOME BACK :)',
                                  style: TextStyle(
                                      color: Colors.black,
                                      fontSize: 40.0,
                                      fontWeight: FontWeight.bold),
                                ),
                              ),
                              const SizedBox(height: 65.0),
                              Container(
                                alignment: Alignment.topLeft,
                                child: const Text('Email'),
                              ),
                              Form(
                                key: emailGlobalKey,
                                child: TextFormField(
                                  onChanged: (value) {
                                    setState(() {
                                      _email.text = value;
                                    });
                                  },
                                  decoration: const InputDecoration(
                                    prefixIcon: Padding(
                                      padding:
                                      EdgeInsets.only(right: 20.0, bottom: 1.0),
                                      child: Icon(Icons.email_outlined,
                                          color: Colors.black45, size: 24.0),
                                    ),
                                    contentPadding: EdgeInsets.only(top: 15.0, left: 0),
                                    hintStyle: TextStyle(
                                        fontWeight: FontWeight.normal,
                                        color: Colors.grey),
                                    hintText: 'Email',
                                    focusedBorder: UnderlineInputBorder(
                                      borderSide:
                                      BorderSide(color: Colors.indigo, width: 2.0),
                                    ),
                                  ),
                                  validator: Validators.required('Email is required!'),
                                ),
                              ),
                              const SizedBox(height: 25.0),
                              Container(
                                alignment: Alignment.topLeft,
                                child: const Text('Password'),
                              ),
                              Form(
                                key: passwordGlobalKey,
                                child: TextFormField(
                                  obscureText: obscureText,
                                  onChanged: (value) {
                                    setState(() {
                                      _password.text = value;
                                    });
                                  },
                                  decoration: InputDecoration(
                                    suffixIcon: obscureText
                                        ? InkWell(
                                      onTap: () {
                                        setState(() {
                                          obscureText = false;
                                        });
                                      },
                                      child: const Icon(Ionicons.eye,
                                          color: Colors.black54, size: 25.0),
                                    )
                                        : InkWell(
                                      onTap: () {
                                        setState(() {
                                          obscureText = true;
                                        });
                                      },
                                      child: const Icon(Ionicons.eye_off,
                                          color: Colors.black54, size: 25.0),
                                    ),
                                    prefixIcon: const Padding(
                                      padding:
                                      EdgeInsets.only(right: 20.0, bottom: 1.0),
                                      child: Icon(Icons.lock_outline,
                                          color: Colors.black45, size: 25.0),
                                    ),
                                    contentPadding:
                                    const EdgeInsets.only(top: 15.0, left: 0),
                                    hintStyle: const TextStyle(
                                        fontWeight: FontWeight.normal,
                                        color: Colors.grey),
                                    hintText: 'Password',
                                    focusedBorder: const UnderlineInputBorder(
                                      borderSide:
                                      BorderSide(color: Colors.indigo, width: 2.0),
                                    ),
                                  ),
                                  validator:
                                  Validators.required('Password is required!'),
                                ),
                              ),
                              const SizedBox(height: 10.0),
                              Container(
                                  alignment: Alignment.topRight,
                                  child: TextButton(
                                    style: TextButton.styleFrom(
                                        padding: const EdgeInsets.all(0.0)),
                                    onPressed: () {},
                                    child: const Text('Forgot Password'),
                                  )),
                              const SizedBox(
                                height: 50.0,
                              ),
                              SizedBox(
                                height: 45.0,
                                width: MediaQuery.of(context).size.width,
                                child: ElevatedButton(
                                  style: ElevatedButton.styleFrom(
                                      primary: _password.text != ''
                                          ? _password.text != ''
                                          ? Colors.indigo
                                          : Colors.indigo[300]
                                          : Colors.indigo[300],
                                      elevation: 0.0,
                                      shadowColor: Colors.transparent,
                                      shape: RoundedRectangleBorder(
                                          borderRadius: BorderRadius.circular(50.0)),
                                      padding: const EdgeInsets.only(
                                          left: 30.0,
                                          top: 0.0,
                                          right: 30.0,
                                          bottom: 0.0)),
                                  onPressed: () {
                                    emailGlobalKey.currentState?.validate();
                                    passwordGlobalKey.currentState?.validate();
                                  },
                                  child: const Text('LOGIN',
                                      style: TextStyle(
                                          color: Colors.white,
                                          fontWeight: FontWeight.bold)),
                                ),
                              ),
                              Container(
                                padding: const EdgeInsets.symmetric(
                                    horizontal: 30.0, vertical: 30.0),
                                child: const Text('OR'),
                              ),
                              Row(
                                mainAxisAlignment: MainAxisAlignment.center,
                                children: [
                                  InkWell(
                                    onTap: () {},
                                    child: Padding(
                                      padding: const EdgeInsets.only(right: 8.0),
                                      child: Material(
                                        color: Colors.indigo,
                                        borderRadius: BorderRadius.circular(50.0),
                                        child: const Padding(
                                          padding: EdgeInsets.all(10.0),
                                          child: Icon(
                                            Ionicons.logo_facebook,
                                            color: Colors.white,
                                            size: 30.0,
                                          ),
                                        ),
                                      ),
                                    ),
                                  ),
                                  InkWell(
                                    onTap: () {},
                                    child: Padding(
                                      padding:
                                      const EdgeInsets.only(left: 8.0, right: 8.0),
                                      child: Material(
                                          color: Colors.red,
                                          borderRadius: BorderRadius.circular(50.0),
                                          child: const Padding(
                                            padding: EdgeInsets.all(10.0),
                                            child: Icon(
                                              Ionicons.logo_google,
                                              color: Colors.white,
                                              size: 30.0,
                                            ),
                                          )),
                                    ),
                                  ),
                                  InkWell(
                                    onTap: () {},
                                    child: Padding(
                                      padding: const EdgeInsets.only(left: 8.0),
                                      child: Material(
                                        color: Colors.blue,
                                        borderRadius: BorderRadius.circular(50.0),
                                        child: const Padding(
                                          padding: EdgeInsets.all(10.0),
                                          child: Icon(
                                            Ionicons.logo_twitter,
                                            color: Colors.white,
                                            size: 30.0,
                                          ),
                                        ),
                                      ),
                                    ),
                                  ),
                                ],
                              ),
                              SizedBox(height: small ? 100.0 : 60.0),
                              Row(
                                mainAxisAlignment: MainAxisAlignment.center,
                                children: [
                                  const Text("I don't have an account?"),
                                  TextButton(
                                    onPressed: () {},
                                    child: const Text(
                                      "Sign up",
                                      style: TextStyle(color: Colors.blue),
                                    ),
                                  )
                                ],
                              ),
                            ],
                          ),
                        ),
                      ),
                      Container(
                        padding: const EdgeInsets.only(top: 30.0, right: 50),
                        child: Icon(Ionicons.settings_outline,
                            color: Colors.black12.withOpacity(0.03), size: 80.0),
                      ),
                    ],
                  ),
                ],
              ),
            );
          }
        }
        
        
        
 
        

** 我怎样才能使我的代码组织得井井有条,并在登录页面后添加一些文本或如您所见进行注册我这里有一些错误,我将如何组织我的代码以使其完美,所以请任何人都可以帮助修复错误,让我做一个文本或 table 就像市场添加的那样,让代码整洁漂亮,这样我就可以理解我可以在哪里写文本或做一个新的 cons 并输入我想要的 好吧,现在我有一个 运行 issue problem 我没听懂你想说什么**

你对他们有意见key

试试这个:

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp((), key: UniqueKey(),));
}


class MyApp extends StatelessWidget {
  const MyApp(Type myApp, {required Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(primarySwatch: Colors.blue),
      home: SinginPage(key: UniqueKey()),
    );
  }
}

class SinginPage extends StatefulWidget {
  const SinginPage({required Key key}) : super(key: key);
  @override
  _SinginPageState createState() => _SinginPageState();
}

class _SinginPageState extends State<SinginPage> {
  bool obscureText = false;

  final TextEditingController _email = TextEditingController();
  final TextEditingController _password = TextEditingController();

  final emailGlobalKey = GlobalKey<FormState>();
  final passwordGlobalKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    var currentWidth = MediaQuery.of(context).size.width;
    var small = currentWidth > 1201;
    var extraSmall = currentWidth > 1025;

    var Validators;
    return Scaffold(
      backgroundColor: Colors.white,
      body: Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          Container(
            height: extraSmall ? MediaQuery.of(context).size.height : 0.0,
            width: small
                ? MediaQuery.of(context).size.width * 0.72
                : extraSmall
                    ? MediaQuery.of(context).size.width - 500
                    : 0.0,
            color: Colors.indigo[200],
            child: Image.network(
              'https://cdn.pixabay.com/photo/2021/10/11/13/12/website-6700615_960_720.png',
              fit: BoxFit.cover,
            ),
          ),
          Stack(
            alignment: Alignment.topRight,
            children: [
              Container(
                height: MediaQuery.of(context).size.height,
                width: small ? MediaQuery.of(context).size.width * 0.28 : 500,
                alignment: Alignment.center,
                color: Colors.white,
                child: Container(
                  padding: const EdgeInsets.all(60.0),
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      const SizedBox(height: 45.0),
                      Container(
                        alignment: Alignment.topLeft,
                        child: const Text(
                          'WELCOME BACK :)',
                          style: TextStyle(
                              color: Colors.black,
                              fontSize: 40.0,
                              fontWeight: FontWeight.bold),
                        ),
                      ),
                      const SizedBox(height: 65.0),
                      Container(
                        alignment: Alignment.topLeft,
                        child: const Text('Email'),
                      ),
                      Form(
                        key: emailGlobalKey,
                        child: TextFormField(
                          onChanged: (value) {
                            setState(() {
                              _email.text = value;
                            });
                          },
                          decoration: const InputDecoration(
                            prefixIcon: Padding(
                              padding:
                                  EdgeInsets.only(right: 20.0, bottom: 1.0),
                              child: Icon(Icons.email_outlined,
                                  color: Colors.black45, size: 24.0),
                            ),
                            contentPadding: EdgeInsets.only(top: 15.0, left: 0),
                            hintStyle: TextStyle(
                                fontWeight: FontWeight.normal,
                                color: Colors.grey),
                            hintText: 'Email',
                            focusedBorder: UnderlineInputBorder(
                              borderSide:
                                  BorderSide(color: Colors.indigo, width: 2.0),
                            ),
                          ),
                          validator: Validators.required('Email is required!'),
                        ),
                      ),
                      const SizedBox(height: 25.0),
                      Container(
                        alignment: Alignment.topLeft,
                        child: const Text('Password'),
                      ),
                      Form(
                        key: passwordGlobalKey,
                        child: TextFormField(
                          obscureText: obscureText,
                          onChanged: (value) {
                            setState(() {
                              _password.text = value;
                            });
                          },
                          decoration: InputDecoration(
                            suffixIcon: obscureText
                                ? InkWell(
                                    onTap: () {
                                      setState(() {
                                        obscureText = false;
                                      });
                                    },
                                    child: const Icon(Ionicons.eye,
                                        color: Colors.black54, size: 25.0),
                                  )
                                : InkWell(
                                    onTap: () {
                                      setState(() {
                                        obscureText = true;
                                      });
                                    },
                                    child: const Icon(Ionicons.eye_off,
                                        color: Colors.black54, size: 25.0),
                                  ),
                            prefixIcon: const Padding(
                              padding:
                                  EdgeInsets.only(right: 20.0, bottom: 1.0),
                              child: Icon(Icons.lock_outline,
                                  color: Colors.black45, size: 25.0),
                            ),
                            contentPadding:
                                const EdgeInsets.only(top: 15.0, left: 0),
                            hintStyle: const TextStyle(
                                fontWeight: FontWeight.normal,
                                color: Colors.grey),
                            hintText: 'Password',
                            focusedBorder: const UnderlineInputBorder(
                              borderSide:
                                  BorderSide(color: Colors.indigo, width: 2.0),
                            ),
                          ),
                          validator:
                              Validators.required('Password is required!'),
                        ),
                      ),
                      const SizedBox(height: 10.0),
                      Container(
                          alignment: Alignment.topRight,
                          child: TextButton(
                            style: TextButton.styleFrom(
                                padding: const EdgeInsets.all(0.0)),
                            onPressed: () {},
                            child: const Text('Forgot Password'),
                          )),
                      const SizedBox(
                        height: 50.0,
                      ),
                      SizedBox(
                        height: 45.0,
                        width: MediaQuery.of(context).size.width,
                        child: ElevatedButton(
                          style: ElevatedButton.styleFrom(
                              primary: _password.text != ''
                                  ? _password.text != ''
                                      ? Colors.indigo
                                      : Colors.indigo[300]
                                  : Colors.indigo[300],
                              elevation: 0.0,
                              shadowColor: Colors.transparent,
                              shape: RoundedRectangleBorder(
                                  borderRadius: BorderRadius.circular(50.0)),
                              padding: const EdgeInsets.only(
                                  left: 30.0,
                                  top: 0.0,
                                  right: 30.0,
                                  bottom: 0.0)),
                          onPressed: () {
                            emailGlobalKey.currentState?.validate();
                            passwordGlobalKey.currentState?.validate();
                          },
                          child: const Text('LOGIN',
                              style: TextStyle(
                                  color: Colors.white,
                                  fontWeight: FontWeight.bold)),
                        ),
                      ),
                      Container(
                        padding: const EdgeInsets.symmetric(
                            horizontal: 30.0, vertical: 30.0),
                        child: const Text('OR'),
                      ),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          InkWell(
                            onTap: () {},
                            child: Padding(
                              padding: const EdgeInsets.only(right: 8.0),
                              child: Material(
                                color: Colors.indigo,
                                borderRadius: BorderRadius.circular(50.0),
                                child: const Padding(
                                  padding: EdgeInsets.all(10.0),
                                  child: Icon(
                                    Ionicons.logo_facebook,
                                    color: Colors.white,
                                    size: 30.0,
                                  ),
                                ),
                              ),
                            ),
                          ),
                          InkWell(
                            onTap: () {},
                            child: Padding(
                              padding:
                                  const EdgeInsets.only(left: 8.0, right: 8.0),
                              child: Material(
                                  color: Colors.red,
                                  borderRadius: BorderRadius.circular(50.0),
                                  child: const Padding(
                                    padding: EdgeInsets.all(10.0),
                                    child: Icon(
                                      Ionicons.logo_google,
                                      color: Colors.white,
                                      size: 30.0,
                                    ),
                                  )),
                            ),
                          ),
                          InkWell(
                            onTap: () {},
                            child: Padding(
                              padding: const EdgeInsets.only(left: 8.0),
                              child: Material(
                                color: Colors.blue,
                                borderRadius: BorderRadius.circular(50.0),
                                child: const Padding(
                                  padding: EdgeInsets.all(10.0),
                                  child: Icon(
                                    Ionicons.logo_twitter,
                                    color: Colors.white,
                                    size: 30.0,
                                  ),
                                ),
                              ),
                            ),
                          ),
                        ],
                      ),
                      SizedBox(height: small ? 100.0 : 60.0),
                      Row(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          const Text("I don't have an account?"),
                          TextButton(
                            onPressed: () {},
                            child: const Text(
                              "Sign up",
                              style: TextStyle(color: Colors.blue),
                            ),
                          )
                        ],
                      ),
                    ],
                  ),
                ),
              ),
              Container(
                padding: const EdgeInsets.only(top: 30.0, right: 50),
                child: Icon(
                  Ionicons.settings_outline,
                  color: Colors.black12.withOpacity(0.03),
                  size: 80.0,
                ),
              ),
            ],
          ),
        ],
      ),
    );
  }
}