i created a simple app using flutter and firebase it all work well but when i click on profile icon from the navigationbar the app froze
Profile page code:
import 'package:cached_network_image/cached_network_image.dart'; import 'package:cloud_firestore/cloud_firestore.dart'; import 'package:firebase_auth/firebase_auth.dart'; import 'package:flutter/material.dart'; import 'package:yumor/models/progress.dart'; import 'package:yumor/models/user_model.dart'; class profile extends StatefulWidget { const profile({Key? key,required this.userProfile}) : super(key: key); final String? userProfile; @override State<profile> createState() => _profileState(); } class _profileState extends State<profile> { final userRef = FirebaseFirestore.instance.collection('users'); buildprofileheader(){ return FutureBuilder(future:userRef.doc(widget.userProfile).get(), builder: ((context, snapshot) { if(!snapshot.hasData){ return CircularProgress(); } UserModel user=UserModel.fromMap(Map); return Padding(padding:EdgeInsets.all(16.0), child: Column( children: [ Row( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Icon(Icons.account_circle, size: 90,) ], ), Container( alignment: Alignment.center, padding: EdgeInsets.all(12.0), child: Text( user.Username as String, style: TextStyle( fontWeight: FontWeight.bold, fontSize:16.0, ), ), ), ], ), ); }), ); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( centerTitle: true, title: Text( "Profile", ), ), body: ListView(children: <Widget>[ // buildprofileHeader(), ])); } } navigation Bar source code
import 'package:firebase_auth/firebase_auth.dart'; import 'package:flutter/material.dart'; import 'package:yumor/models/user_model.dart'; import 'package:yumor/pages/Home_page.dart'; import 'package:yumor/pages/profile.dart'; import 'package:yumor/pages/search.dart'; import 'package:yumor/pages/upload.dart'; class BottomBar extends StatefulWidget { const BottomBar({Key? key}) : super(key: key); @override State<BottomBar> createState() => _BottomBarState(); } class _BottomBarState extends State<BottomBar> { List pages = [ home_page(), search(), upload(), profile(userProfile:FirebaseAuth.instance.currentUser!.uid), ]; // this current index means that this index depends on which one you click form 0 to 4 int currentIndex = 0; void onTap(int index) { // currentindex equale to index to take value setState(() { currentIndex = index; }); } @override Widget build(BuildContext context) { return Scaffold( body: pages[currentIndex], bottomNavigationBar: BottomNavigationBar( type: BottomNavigationBarType.fixed, selectedFontSize: 0, unselectedFontSize: 0, onTap: onTap, currentIndex: currentIndex, backgroundColor: Colors.white, selectedItemColor: Colors.black87, unselectedItemColor: Colors.grey.shade600.withOpacity(0.6), elevation: 0, items: [ BottomNavigationBarItem( icon: Icon(Icons.home_outlined), label: 'home'), BottomNavigationBarItem(icon: Icon(Icons.search), label: 'search'), BottomNavigationBarItem( icon: Icon(Icons.add_box_outlined), label: 'add'), BottomNavigationBarItem( icon: Icon(Icons.person_outline_rounded), label: 'profile'), ]), ); } } firebase user creation code
import 'package:flutter/foundation.dart'; class UserModel { String? uid; String? Username; String? email; String? photoUrl; UserModel( {this.uid, this.email, this.Username, this.photoUrl}); // receving data from the server factory UserModel.fromMap(Map) { return UserModel( uid: Map['userId'], Username: Map['Username'], email: Map['email'], photoUrl: Map['photoUrl'], ); } // /// sending data to firestore Map<String, dynamic> toMap() { return { 'userId': uid, 'Username': Username, 'email': email, 'photoUrl': photoUrl, }; } } error_patch.dart
@patch @pragma("vm:external-name", "Error_throwWithStackTrace") external static Never _throw(Object error, StackTrace stackTrace); } NOTE flutter doctor -v [ [√] Flutter (Channel stable, 3.3.5, on Microsoft Windows [Version 10.0.19044.2130], locale en-US) • Flutter version 3.3.5 on channel stable at C:\Dart\flutter • Upstream repository https://github.com/flutter/flutter.git • Framework revision d9111f6402 (8 days ago), 2022-10-19 12:27:13 -0700 • Engine revision 3ad69d7be3 • Dart version 2.18.2 • DevTools version 2.15.0
Checking Android licenses is taking an unexpectedly long time...[√] Android toolchain - develop for Android devices (Android SDK version 33.0.0) • Android SDK at C:\Users\Abdou\AppData\Local\Android\Sdk • Platform android-33, build-tools 33.0.0 • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840) • All Android licenses accepted.
[X] Chrome - develop for the web (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe) ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.
[X] Visual Studio - develop for Windows X Visual Studio not installed; this is necessary for Windows development. Download at https://visualstudio.microsoft.com/downloads/. Please install the "Desktop development with C++" workload, including all of its default components
[√] Android Studio (version 2021.2) • Android Studio at C:\Program Files\Android\Android Studio • Flutter plugin can be installed from: https://plugins.jetbrains.com/plugin/9212-flutter • Dart plugin can be installed from: https://plugins.jetbrains.com/plugin/6351-dart • Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
[√] VS Code, 64-bit edition (version 1.72.2) • VS Code at C:\Program Files\Microsoft VS Code • Flutter extension version 3.50.0
[√] Connected device (3 available) • Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 7.0 (API 24) (emulator) • Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2130] • Edge (web) • edge • web-javascript • Microsoft Edge 106.0.1370.52
[√] HTTP Host Availability • All required HTTP hosts are available ]
my pubspec.yaml
name: yumor description: A new Flutter project. # The following line prevents the package from being accidentally published to # pub.dev using `flutter pub publish`. This is preferred for private packages. publish_to: 'none' # Remove this line if you wish to publish to pub.dev # The following defines the version and build number for your application. # A version number is three numbers separated by dots, like 1.2.43 # followed by an optional build number separated by a +. # Both the version and the builder number may be overridden in flutter # build by specifying --build-name and --build-number, respectively. # In Android, build-name is used as versionName while build-number used as versionCode. # Read more about Android versioning at https://developer.android.com/studio/publish/versioning # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. # Read more about iOS versioning at # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html version: 1.0.0+1 environment: sdk: ">=2.16.1 <3.0.0" # Dependencies specify other packages that your package needs in order to work. # To automatically upgrade your package dependencies to the latest versions # consider running `flutter pub upgrade --major-versions`. Alternatively, # dependencies can be manually updated by changing the version numbers below to # the latest version available on pub.dev. To see which dependencies have newer # versions available, run `flutter pub outdated`. dependencies: cached_network_image: ^3.2.0 cloud_firestore: ^3.1.10 cupertino_icons: ^1.0.2 email_validator: ^2.0.1 firebase_auth: ^3.3.9 firebase_core: ^1.13.1 firebase_storage: ^10.2.15 flutter: sdk: flutter flutter_native_splash: ^2.2.9 flutter_svg: ^1.0.3 fluttertoast: ^8.0.9 get: ^4.6.5 image_picker: ^0.8.5 dev_dependencies: flutter_lints: ^2.0.1 flutter_test: sdk: flutter flutter_native_splash: background_image: assets/splashcreen.png image: assets/start_logo.png # For information on the generic Dart part of this file, see the # following page: https://dart.dev/tools/pub/pubspec # The following section is specific to Flutter. flutter: # The following line ensures that the Material Icons font is # included with your application, so that you can use the icons in # the material Icons class. uses-material-design: true # To add assets to your application, add an assets section, like this: assets: - assets/yumor-logo.png - assets/search_page.svg - assets/upload_page.svg - assets/user.png # An image asset can refer to one or more resolution-specific "variants", see # https://flutter.dev/assets-and-images/#resolution-aware. # For details regarding adding assets from package dependencies, see # https://flutter.dev/assets-and-images/#from-packages # To add custom fonts to your application, add a fonts section here, # in this "flutter" section. Each entry in this list should have a # "family" key with the font family name, and a "fonts" key with a # list giving the asset and other descriptors for the font. For # example: # fonts: # - family: Schyler # fonts: # - asset: fonts/Schyler-Regular.ttf # - asset: fonts/Schyler-Italic.ttf # style: italic # - family: Trajan Pro # fonts: # - asset: fonts/TrajanPro.ttf # - asset: fonts/TrajanPro_Bold.ttf # weight: 700 # # For details regarding fonts from package dependencies, # see https://flutter.dev/custom-fonts/#from-packages 
