未找到：'dart:html' import 'dart:html'; 我不需要 dart:html 并且我也没有使用，但我尝试导入它，但错误没有消失

Question

我正在编写一个代码，其中我正在使用 firebase 进行注册。包括个人资料图像在内的数据将被火存储。但问题是我遇到了多个无法解决的错误。我的应用程序甚至还没有运行过一次。其中一个错误是 "import:dart:html" ，我检查了所有 dart 文件，但没有找到任何未使用的 dart:html 导入。我使用 import"dart.io" 来表示术语“late File”。我也通过导入 dart:html 进行了尝试，但错误仍然相同。我还尝试删除 ProfileImage 的所有代码，但错误仍然存​​在。以下是有错误的 y 代码的所有文件：

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错误

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Launching lib\\main.dart on sdk gphone x86 arm in debug mode...\nRunning Gradle task 'assembleDebug'...\nInvalid depfile: D:\\Noum\\Data\\Uni Data\\Codes\\Android Studio\\Flutter\\firebase_flutter_app\\.dart_tool\\flutter_build\\040ba043425f685efe2a35025cf4d63f\\kernel_snapshot.d\nInvalid depfile: D:\\Noum\\Data\\Uni Data\\Codes\\Android Studio\\Flutter\\firebase_flutter_app\\.dart_tool\\flutter_build\\040ba043425f685efe2a35025cf4d63f\\kernel_snapshot.d\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/storage.dart:2:8: Error: Not found: 'dart:html'\nimport 'dart:html';\n       ^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/utils.dart:2:8: Error: Not found: 'dart:html'\nimport 'dart:html';\n       ^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/js-0.6.3/lib/js.dart:8:1: Error: Not found: 'dart:js'\nexport 'dart:js' show allowInterop, allowInteropCaptureThis;\n^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/js-0.6.3/lib/js_util.dart:8:1: Error: Not found: 'dart:js_util'\nexport 'dart:js_util';\n^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart:340:25: Error: The method 'allowInterop' isn't defined for the class 'Auth'.\n - 'Auth' is from 'package:firebase/src/auth.dart' ('/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart').\nTry correcting the name to the name of an existing method, or defining a method named 'allowInterop'.\n    final nextWrapper = allowInterop((firebase_interop.UserJsImpl? user) {\n                        ^^^^^^^^^^^^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart:344:26: Error: The method 'allowInterop' isn't defined for the class 'Auth'.\n - 'Auth' is from 'package:firebase/src/auth.dart' ('/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart').\nTry correcting the name to the name of an existing method, or defining a method named 'allowInterop'.\n    final errorWrapper = allowInterop((e) => changeController.addError(e));\n                         ^^^^^^^^^^^^\n/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart:374:9: Error: The method 'allowInterop' isn't defined for the class 'Auth'.\n - 'Auth' is from 'package:firebase/src/auth.dart' ('/C:/src/flutter/flutter/.pub-cache/hosted/pub.dartlang.org/firebase-9.0.1/lib/src/auth.dart').\nTry correcting the name to the name of an existing method, or defining a method named 'allowInterop'.\n        allowInterop((firebase_interop.UserJsImpl? user) {\n        ^^^^^^^^^^^^\n\n\nFAILURE: Build failed with an exception.\n\n* Where:\nScript 'C:\\src\\flutter\\flutter\\packages\\flutter_tools\\gradle\\flutter.gradle' line: 1035\n\n* What went wrong:\nExecution failed for task ':app:compileFlutterBuildDebug'.\n> Process 'command 'C:\\src\\flutter\\flutter\\bin\\flutter.bat'' finished with non-zero exit value 1\n\n* Try:\nRun with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.\n\n* Get more help at https://help.gradle.org\n\nBUILD FAILED in 43s\nException: Gradle task assembleDebug failed with exit code 1\n

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颤振医生

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PS C:\\Users\\Nouma> flutter doctor\nDoctor summary (to see all details, run flutter doctor -v):\n[\xe2\x88\x9a] Flutter (Channel stable, 2.2.2, on Microsoft Windows [Version 10.0.19042.1052], locale en-PK)\n[\xe2\x88\x9a] Android toolchain - develop for Android devices (Android SDK version 30.0.3)\n[\xe2\x88\x9a] Chrome - develop for the web\n[\xe2\x88\x9a] Android Studio (version 4.1.0)\n[\xe2\x88\x9a] VS Code (version 1.57.1)\n[\xe2\x88\x9a] Connected device (2 available)\n\n\xe2\x80\xa2 No issues found!\nPS C:\\Users\\Nouma>\n

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依赖关系

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environment:\n  sdk: ">=2.12.0 <3.0.0"\n\ndependencies:\n  flutter:\n    sdk: flutter\n  firebase_auth: ^2.0.0\n  firebase_core: ^1.3.0\n  auth_buttons: ^1.0.1+4\n  cloud_firestore: ^2.3.0\n  firebase_storage: ^9.0.0\n  google_sign_in: ^5.0.4\n  firebase_analytics: ^8.1.2\n  image_picker: ^0.8.1+3\n  shared_preferences: ^2.0.6\n

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Register.dart ，这是编写所有代码的文件

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import 'dart:io';\nimport 'package:cloud_firestore/cloud_firestore.dart';\nimport 'package:firebase/firebase.dart';\nimport 'package:firebase_auth/firebase_auth.dart' as route;\nimport 'package:firebase_flutter_app/ErrorAlertDialog.dart';\nimport 'package:firebase_flutter_app/StoreHome.dart';\nimport 'package:firebase_storage/firebase_storage.dart';\nimport 'package:image_picker/image_picker.dart';\nimport 'package:flutter/material.dart';\nimport 'CustomTextField.dart';\nimport 'LoadingDialog.dart';\nimport 'package:shared_preferences/shared_preferences.dart';\n\nclass Register extends StatefulWidget {\n  const Register({Key? key}) : super(key: key);\n\n  @override\n  _RegisterState createState() => _RegisterState();\n}\n\nclass _RegisterState extends State<Register> {\n  final TextEditingController _nametextEditingController=TextEditingController();\n  final TextEditingController _emailtextEditingController=TextEditingController();\n  final TextEditingController _passwordtextEditingController=TextEditingController();\n  final TextEditingController _cPasswordEditingController=TextEditingController();\n  final GlobalKey<FormState> _globalKey=GlobalKey<FormState>();\n  String userImageurl="";\n   late File _imagefile;\n  final _picker=ImagePicker();\n  static final String userID='uid';\n  static final String userName='name';\n  static final String userEmail='email';\n  static final String userAvatar='url';\n  static final String userPhotoUrl='photoUrl';\n  static final String userCartList='userCart';\n  SharedPreferences sharedPreferences=SharedPreferences.getInstance() as SharedPreferences;\n\n\n  @override\n  Widget build(BuildContext context) {\n\n    double _screenwidth=MediaQuery.of(context).size.width;\n    return SingleChildScrollView(\n      child: Container(\n        child: Column(\n          mainAxisSize:MainAxisSize.max,\n          children: [\n            SizedBox(height: 10.0,),\n            InkWell(\n              onTap:(){},\n              child: CircleAvatar(\n                radius: _screenwidth *0.15,\n                backgroundColor: Colors.white30,\n                // ignore: unnecessary_null_comparison\n                child: Icon(Icons.add_a_photo_outlined,size: _screenwidth *0.15,color: Colors.grey,),\n                //backgroundImage: _imagefile==null ? null: FileImage(_imagefile),\n                // ignore: unnecessary_null_comparison\n               // child: _imagefile==null ? Icon(Icons.add_a_photo_outlined,size: _screenwidth *0.15,color: Colors.grey,)\n               // :null,\n\n              ),\n            ),\n            SizedBox(height: 8.0,),\n            Form(\n                key: _globalKey,\n                child:Column(\n                  children: [\n                    CustomTextField(\n                    controller: _nametextEditingController,\n                      data: Icons.person,\n                      hintText: 'Name',\n                      isObsecure: false,\n                    ),\n                    CustomTextField(\n                      controller: _emailtextEditingController,\n                      data: Icons.email,\n                      hintText: 'Email',\n                      isObsecure: false,\n                    ),\n                    CustomTextField(\n                      controller: _passwordtextEditingController,\n                      data: Icons.password,\n                      hintText: 'Password',\n                      isObsecure: true,\n                    ),\n                    CustomTextField(\n                      controller: _cPasswordEditingController,\n                      data: Icons.password,\n                      hintText: 'Confirm Password',\n                      isObsecure: true,\n                    ),\n                  ],\n                )\n            ),\n            RaisedButton(\n                onPressed: ()\n                {\n                //  uploadAndSaveImage();\n                },\n              color: Colors.blueGrey,\n              child: Text('Sign Up',style: TextStyle(color: Colors.white30),),\n            ),\n            SizedBox(\n              height: 30.0,\n            ),\n            Container(\n              height: 4.0,\n              width: _screenwidth* 0.8,\n              color: Colors.cyan,\n            ),\n            SizedBox(\n              height: 15.0,\n            ),\n          ],\n        ),\n      ),\n    );\n  }\n   Future<void> _selectAndPickImage() async // ignore: unused_element\n  {\n\n    _imagefile = (await _picker.getImage(source: ImageSource.gallery) )as File;\n  }\n\n  Future<void> uploadAndSaveImage()async\n  {\n   // ignore: unnecessary_null_comparison\n   if(_imagefile==null)\n     {\n       showDialog(\n           context: context,\n           builder:(c)\n           {\n            return ErrorAlertDialog(message: 'Please Select an Image');\n\n           }\n       );\n     }\n   else\n     {\n       _passwordtextEditingController.text==_cPasswordEditingController.text\n       // ? is an 'if' condition\n       //if all these are true we will upload the image\n           ? _emailtextEditingController.text.isNotEmpty\n           && _passwordtextEditingController.text.isNotEmpty\n           && _cPasswordEditingController.text.isNotEmpty\n           &&_nametextEditingController.text.isNotEmpty\n\n\n           ? uploadToStorage()\n\n       //this dialogue is for the upper fields if they remains somehow empty\n           :displayDialog('Please fill the empty fields in form...')\n           :displayDialog('Password do not match');\n\n     }\n  }\n  displayDialog(String msg)\n  {\n    showDialog(context: context,\n        builder: (C)\n    {\n      return ErrorAlertDialog(message: msg);\n    }\n    );\n  }\n  uploadToStorage()async\n  {\n    showDialog(\n        context: context,\n        builder: (c){\n          return LoadingDialog(mesage: 'Authenticating, Please Wait!...',);\n        }\n\n    );\n    //unique name to upload it to firestore,and we will use datetime sp it won't repeat again\n    String imageFileName=DateTime.now().millisecondsSinceEpoch.toString();\n\n    StorageReference storageReference=FirebaseStorage.instance.ref().child(imageFileName) as StorageReference;\n    var uploadTask=storageReference.put(_imagefile);\n    UploadTaskSnapshot taskSnapshot=await uploadTask.future;\n\n    await taskSnapshot.ref.getDownloadURL().then((urlimage){\n      userImageurl=urlimage as String;\n\n      _registerUser();\n\n    });\n\n\n\n  }\n  route.FirebaseAuth _auth=route.FirebaseAuth.instance;\n  void _registerUser() async\n  {\n    route.User? userr;\n    await _auth.createUserWithEmailAndPassword(\n      email: _emailtextEditingController.text.trim(),\n      password: _passwordtextEditingController.text.trim(),\n    ).then((auth) {\n       userr = auth.user!;\n    }).catchError((error) {\n      Navigator.pop(context);\n      showDialog(\n          context: context,\n          builder: (c) {\n            return ErrorAlertDialog(message: error.toString(),);\n          }\n      );\n    });\n    if (userr != null)\n  {\n     saveUserInfoToFirestore(userr!).then((value){\n     Navigator.pop(context);\n     //if the user registration gets successful we will send it to store home\n     Route route=MaterialPageRoute(builder: (c)=>StoreHome());\n     Navigator.pushReplacement(context, route);\n     });\n\n  }\n  }\n  Future saveUserInfoToFirestore(route.User firebaseUser) async\n  {\n    FirebaseFirestore.instance.collection('users').doc(firebaseUser.uid).set({\n      'uid':firebaseUser.uid,\n      'email':firebaseUser.email,\n      'name':_nametextEditingController.text.trim(),\n      'url':userImageurl,\n    });\n    await sharedPreferences.setString('uid', firebaseUser.uid);\n    await sharedPreferences.setString(userEmail, firebaseUser.email.toString());\n    await sharedPreferences.setString(userName, _nametextEditingController.text.trim());\n    await sharedPreferences.setString(userAvatar, userImageurl);\n    await sharedPreferences.setStringList(userCartList, ["garbageValue"]);\n  }\n\n\n\n}\n

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main.dart 文件：这里我使用 dart:async 作为方法“Time”

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//import 'package:cloud_firestore/cloud_firestore.dart';\n//import 'package:firebase/firestore.dart';\n\nimport 'dart:async';    \nimport 'package:firebase_auth/firebase_auth.dart';\nimport 'package:firebase_core/firebase_core.dart';\nimport 'package:flutter/material.dart';\n\n//import 'package:shared_preferences/shared_preferences.dart';\n\nimport 'AuthenticationScreen.dart';\nimport 'StoreHome.dart';\n\nvoid main() async{\n  WidgetsFlutterBinding.ensureInitialized();\n  await Firebase.initializeApp();\n  //SharedPreferences sharedPreferences=SharedPreferences.getInstance() as SharedPreferences;\n  //Firestore firestore=FirebaseFirestore.instance as Firestore;\n  // ignore: unnecessary_statements\n\n  runApp(MyApp());\n}\n\nclass MyApp extends StatelessWidget {\n  // This widget is the root of your application.\n\n  @override\n  Widget build(BuildContext context) {\n\n    return MaterialApp(\n      title: 'E-Shop',\n      theme: ThemeData(\n        primarySwatch: Colors.blue,\n      ),\n      debugShowCheckedModeBanner: false,\n      home: SplashScreen(),\n    );\n  }\n}\nclass SplashScreen extends StatefulWidget{\n  @override\n  State<StatefulWidget> createState() => _splashproperties();\n//=>(Fat Arrow is used to replace the braces and return)\n}\n\nclass _splashproperties extends State<SplashScreen>{\n  @override\n  void initState(){\n    super.initState();\n    displaySplash();\n  }\n  displaySplash(){\n    FirebaseAuth auth=FirebaseAuth.instance;\n    Timer(Duration(seconds: 5), () async{\n      if(auth.currentUser!= null)\n      {\n        Route route=MaterialPageRoute(builder: (_)=>StoreHome());\n        Navigator.pushReplacement(context, route);\n      }\n      else{\n        Route route=MaterialPageRoute(builder: (_)=>AuthenticationScreen());\n        Navigator.pushReplacement(context, route);\n      }\n    });\n  }\n\n\n  Widget build(BuildContext context) {\n    return Material\n      (\n      child: Container\n        (\n        decoration: new BoxDecoration(\n            gradient: new LinearGradient(colors:[Colors.pink,Colors.lightGreenAccent],\n              begin: const FractionalOffset(0.0, 0.0),\n              end: const FractionalOffset(1.0, 0.0),\n              stops: [0.0,1.0],\n              tileMode: TileMode.clamp,\n            )\n        ),\n        child: Center(\n          child: Column(\n            mainAxisAlignment: MainAxisAlignment.center,\n            children: [\n              Image.asset('images/xweb.jpg'),\n              SizedBox(height: 20.0),\n              Text("Number One We Are!!!!!!!",style: TextStyle(color: Colors.white30),\n              ),\n            ],\n          ),\n        ),\n      ),\n    );\n  }\n\n}\n

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Answer 1

尝试清理软件包并再次运行 pub get

flutter clean
./gradlew clean
flutter pub get

如果不起作用试试这个