我真的需要帮助，我已经尝试了很多天，但仍然没有解决问题 当我在 ios 模拟器中运行这个应用程序时，它运行良好，但是当我在任何 Android 设备中运行时，它会立即崩溃，我没有遇到问题
应用程序启动后我的调试控制台崩溃
Launching lib/main.dart on sdk gphone64 arm64 in debug mode...
✓ Built build/app/outputs/flutter-apk/app-debug.apk
D/FlutterGeolocator( 2637): Attaching Geolocator to activity
D/FlutterGeolocator( 2637): Creating service.
D/FlutterGeolocator( 2637): Binding to location service.
D/FlutterLocationService( 2637): Creating service.
D/FlutterLocationService( 2637): Binding to location service.
D/FlutterGeolocator( 2637): Geolocator foreground service connected
D/FlutterGeolocator( 2637): Initializing Geolocator services
D/FlutterGeolocator( 2637): Flutter engine connected. Connected engine count 1
Connecting to VM Service at ws://127.0.0.1:63706/2UBZY5eep1A=/ws
Connected to the VM Service.
I/flutter ( 2637): eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiI2NmU3ZmEwMjliZGZlMTAwNmUzOTY0MzkiLCJpYXQiOjE3MjcxNzMyNTMsImV4cCI6MTc0Mjk0MTI1MywidHlwZSI6ImFjY2VzcyJ9.b0PWqexRxdiypAdbi8mdn14JQaYdLPerEryw3k1sVTU
I/flutter ( 2637): eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiI2NmU3ZmEwMjliZGZlMTAwNmUzOTY0MzkiLCJpYXQiOjE3MjcxNzMyNTMsImV4cCI6MTc1ODcwOTI1MywidHlwZSI6InJlZnJlc2gifQ.xu95VDDLfimL0nAiMvM0ZD2R6REsxYAOj5ASR1WMnBw
D/EGL_emulation( 2637): app_time_stats: avg=12.65ms min=3.00ms max=120.38ms count=50
D/EGL_emulation( 2637): app_time_stats: avg=4.20ms min=1.37ms max=8.33ms count=61
D/ProfileInstaller( 2637): Installing profile for com.example.vezigo
D/EGL_emulation( 2637): app_time_stats: avg=6.14ms min=1.10ms max=199.55ms count=57
Reloaded 1 of 1157 libraries in 243ms.
重启后
E/flutter ( 2637): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: TimeoutException after 0:00:30.000000: Future not completed
E/flutter ( 2637):
Restarted application in 617ms.
W/WindowOnBackDispatcher( 2637): sendCancelIfRunning: isInProgress=false callback=io.flutter.embedding.android.FlutterActivity$1@bf7ddac
I/flutter ( 2637): eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiI2NmU3ZmEwMjliZGZlMTAwNmUzOTY0MzkiLCJpYXQiOjE3MjcxNzMyNTMsImV4cCI6MTc0Mjk0MTI1MywidHlwZSI6ImFjY2VzcyJ9.b0PWqexRxdiypAdbi8mdn14JQaYdLPerEryw3k1sVTU
I/flutter ( 2637): eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiI2NmU3ZmEwMjliZGZlMTAwNmUzOTY0MzkiLCJpYXQiOjE3MjcxNzMyNTMsImV4cCI6MTc1ODcwOTI1MywidHlwZSI6InJlZnJlc2gifQ.xu95VDDLfimL0nAiMvM0ZD2R6REsxYAOj5ASR1WMnBw
D/EGL_emulation( 2637): app_time_stats: avg=61040.50ms min=1.08ms max=244092.02ms count=4
D/EGL_emulation( 2637): app_time_stats: avg=3.28ms min=0.89ms max=9.21ms count=61
D/EGL_emulation( 2637): app_time_stats: avg=2.55ms min=0.96ms max=6.38ms count=60
D/EGL_emulation( 2637): app_time_stats: avg=5.00ms min=1.14ms max=163.79ms count=59
扑医生
arleven@Arlevens-Mini vezigo-flutter % flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[!] Flutter (Channel stable, 3.24.1-0.0.pre.3, on macOS 14.6.1 23G93 darwin-arm64, locale en-IN)
! Upstream repository https://github.com/tanuu007/flutter.git is not a standard remote.
Set environment variable "FLUTTER_GIT_URL" to https://github.com/tanuu007/flutter.git to dismiss this error.
[!] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
✗ Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/to/macos-android-setup for more details.
[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.1)
[✓] VS Code (version 1.93.1)
[✓] Connected device (5 available)
! Error: Browsing on the local area network for Arleven’s iPad. Ensure the device is unlocked and attached with a cable or associated with the same local area
network as this Mac.
The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources
! Doctor found issues in 2 categories.
还有我的主屏幕，如果出现任何问题，应用程序就会崩溃
import 'package:flutter/material.dart';
import 'package:vezigo/Api_Models/banner.dart';
import 'package:vezigo/Screens/categories.dart';
import 'package:vezigo/Models/colors.dart';
import 'package:vezigo/Screens/cart_screen.dart';
import 'package:vezigo/Providers/item_provider.dart';
import 'package:provider/provider.dart';
import 'package:vezigo/Models/category.dart';
import 'dart:async';
import 'package:badges/badges.dart' as badges;
import 'package:http/http.dart' as http;
import 'package:vezigo/Screens/search.dart';
import 'dart:convert';
import '../Api_Models/list_products.dart';
import '../Providers/fav_provider.dart';
import 'item_details.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:url_launcher/url_launcher.dart';
class MyHomeScreen extends StatefulWidget {
const MyHomeScreen({super.key});
@override
State<MyHomeScreen> createState() => _MyHomeScreenState();
}
class _MyHomeScreenState extends State<MyHomeScreen> {
int _currentPage = 0;
final TextEditingController _searchController = TextEditingController();
final ScrollController _scrollController = ScrollController();
String _appBarTitle = 'Vezigo';
bool _isSearchVisible = false;
final PageController _pageController = PageController();
Timer? _timer;
@override
void initState() {
super.initState();
_futureProducts = fetchProducts();
_futureBanners = fetchbanner();
_scrollController.addListener(_scrollListener);
_timer = Timer.periodic(const Duration(seconds: 3), (Timer timer) {
if (_pageController.hasClients) {
if (_currentPage < 2) {
_currentPage++;
} else {
_currentPage = 0;
}
_pageController.animateToPage(
_currentPage,
duration: const Duration(milliseconds: 300),
curve: Curves.easeIn,
);
}
});
}
@override
void dispose() {
_scrollController.dispose();
_timer?.cancel();
_pageController.dispose();
super.dispose();
}
void _scrollListener() {
double offset = _scrollController.offset;
if (offset > 400) {
setState(() {
_appBarTitle = 'Fruits';
});
} else {
setState(() {
_appBarTitle = 'Vezigo';
});
}
}
Future<List<Product>> fetchProducts() async {
final response = await http.get(Uri.parse('${AppColors.api}/products'));
if (response.statusCode == 200) {
final Map<String, dynamic> responseMap = json.decode(response.body);
final Map<String, dynamic> dataMap = responseMap['data'];
final List<dynamic> productList = dataMap['results'];
SharedPreferences prefs = await SharedPreferences.getInstance();
List<String> productIds = productList.map((json) => Product.fromJson(json).id).toList();
await prefs.setStringList('productIds', productIds);
return productList.map((json) => Product.fromJson(json)).toList();
} else {
throw Exception('Failed to load products');
}
}
//Banner Api
Future<List<BannerItem>> fetchbanner() async{
final response = await http.get(Uri.parse('${AppColors.api}/app/banners'));
if(response.statusCode == 200){
final Map<String, dynamic> responseMap = json.decode(response.body);
final Map<String, dynamic> dataMap = responseMap['data'];
final List<dynamic> bannerData = dataMap['results'];
return bannerData.map((json) => BannerItem.fromJson(json)).toList();
} else {
throw Exception('Failed to load banners');
}
}
late Future<List<Product>> _futureProducts;
late Future<List<BannerItem>> _futureBanners;
@override
Widget build(BuildContext context) {
final favoriteProvider = Provider.of<FavoriteProvider>(context);
final cartProvider = Provider.of<Cart>(context);
return Scaffold(
appBar: AppBar(
automaticallyImplyLeading: false,
title: Text(
_appBarTitle,
style: const TextStyle(color: AppColors.textColor),
),
centerTitle: true,
backgroundColor: AppColors.appbarColor,
scrolledUnderElevation: 0,
leading: const SizedBox(width: 70),
actions: [
IconButton(
onPressed: () {
setState(() {
_isSearchVisible = !_isSearchVisible;
});
},
icon: const Icon(Icons.search, size: 30, color: AppColors.textColor),
),
badges.Badge(
position: badges.BadgePosition.topEnd(top: 0, end: 3),
badgeStyle:const badges.BadgeStyle(
badgeColor: Colors.white,
),
badgeAnimation: const badges.BadgeAnimation.fade(
animationDuration: Duration(milliseconds: 300),
),
showBadge: cartProvider.items.isNotEmpty,
badgeContent: Text(
cartProvider.items.length.toString(),
style: const TextStyle(color: Colors.black, fontSize: 12),
),
child: IconButton(
tooltip: 'cart',
icon: const Icon(Icons.shopping_cart, size: 30, color: AppColors.textColor),
onPressed: () {
Navigator.of(context).push(
MaterialPageRoute(builder: (context) => const CartScreen()),
);
},
),
),
],
),
body: Container(
width: double.infinity,
height: double.infinity,
decoration: const BoxDecoration(
color: AppColors.appbarColor,
),
child: SafeArea(
child: SingleChildScrollView(
controller: _scrollController,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Visibility(
visible: _isSearchVisible,
child: Padding(
padding:
const EdgeInsets.symmetric(horizontal: 18.0, vertical: 10.0),
child: TextField(
readOnly: true,
onTap: ()async {
List<Product> productList = await _futureProducts;
Navigator.of(context).push(MaterialPageRoute(builder: (ctx) => SearchScreen(productList: productList)));
},
controller: _searchController,
decoration: InputDecoration(
filled: true,
fillColor: Colors.white,
labelText: 'Search Your Groceries',
suffixIcon: const Icon(Icons.search, color: AppColors.appbarColor),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(50),
),
),
),
),
),
FutureBuilder<List<BannerItem>>(
future: _futureBanners,
builder: (context, snapshot){
if(snapshot.connectionState == ConnectionState.waiting){
return Center(child: CircularProgressIndicator(),);
} else if (snapshot.hasError) {
return Center(child: Text('Error: ${snapshot.error}'));
}else if (!snapshot.hasData || snapshot.data!.isEmpty) {
return const Center(child: Text('No products available'));
} else {
final banners = snapshot.data!;
return AnimatedSize(
duration: const Duration(milliseconds: 300),
child: Container(
width: double.infinity,
decoration: BoxDecoration(
color: AppColors.backgroundColor,
borderRadius: BorderRadius.circular(0),
),
child: Padding(
padding: const EdgeInsets.only(top: 10.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Container(
width: double.infinity,
height: MediaQuery.of(context).size.height * 0.2,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30),
color: const Color.fromARGB(255, 249, 255, 249),
),
child: PageView.builder(
controller: _pageController,
onPageChanged: (index) {
setState(() {
_currentPage = index;
});
},
itemCount: banners.length,
itemBuilder: (context, index) {
return GestureDetector(
onTap: () async {
final url = Uri.parse(banners[index].url);
if (await canLaunchUrl(url)) {
await launchUrl(url, mode: LaunchMode.externalApplication);
} else {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text('Could not launch $url')),
);
}
},
child: Container(
margin: const EdgeInsets.symmetric(horizontal: 10.0),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(30),
color: AppColors.lightTheme,
),
clipBehavior: Clip.hardEdge,
child: Image.network(
banners[index].image,
fit: BoxFit.cover,
width: double.infinity,
height: double.infinity,
),
),
);
},
),
),
const SizedBox(height: 10),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: List.generate(banners.length, (index) {
return Container(
margin: const EdgeInsets.symmetric(horizontal: 4),
width: 10,
height: 10,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: _currentPage == index
? AppColors.buttonColor
: Colors.green.shade200,
),
);
}),
),
const SizedBox(height: 10,),
const Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0),
child: Text(
'Categories',
style: TextStyle(
fontSize: 20, fontWeight: FontWeight.bold),
),
),
Padding(
padding: const EdgeInsets.all(10.0),
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
CategoryItem(
title: 'Fruits',
imagePath: 'assets/images/orange.png',
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>const CategoriesScreen(
categoryTitle: 'fruit',
),
),
);
},
),
const SizedBox(width: 10),
CategoryItem(
title: 'Veggies',
imagePath: 'assets/images/veggies.png',
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>const CategoriesScreen(
categoryTitle: 'vegetable',
),
),
);
},
),
const SizedBox(width: 10),
],
),
),
),
const SizedBox(height: 20),
const Padding(
padding: EdgeInsets.symmetric(horizontal: 16.0),
child: Text(
'Popular',
style: TextStyle(
fontSize: 20, fontWeight: FontWeight.bold),
),
),
FutureBuilder<List<Product>>(
future: _futureProducts,
builder: (context, snapshot) {
if (snapshot.connectionState == ConnectionState.waiting) {
return const Center(child: CircularProgressIndicator());
} else if (snapshot.hasError) {
return Center(child: Text('Error: ${snapshot.error}'));
} else if (!snapshot.hasData || snapshot.data!.isEmpty) {
return const Center(child: Text('No products available'));
} else {
final products = snapshot.data!;
return Padding(
padding: const EdgeInsets.all(8.0),
child: GridView.builder(
shrinkWrap: true,
physics: const NeverScrollableScrollPhysics(),
gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
crossAxisSpacing: 10.0,
mainAxisSpacing: 10.0,
childAspectRatio: 0.99,
),
itemCount: products.length,
itemBuilder: (context, index) {
final product = products[index];
final isFavorite = favoriteProvider.isFavorite(product);
return GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => ItemDetailsScreen(productId: product.id),
),
);
},
child: Card(
color: Colors.white,
elevation: 5,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15),
),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
border: Border.all(
color: Colors.white,
width: 5,
),
),
child: Stack(
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Flexible(
flex: 2,
child: ClipRRect(
borderRadius: const BorderRadius.vertical(top: Radius.circular(15)),
child: Container(
color: AppColors.lightTheme,
child: Image.network(
product.imageUrl,
fit: BoxFit.cover,
width: double.infinity,
),
),
),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
product.title,
style: const TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
),
),
RichText(
text: TextSpan(
children: <TextSpan>[
TextSpan(
text: '₹${product.marketPrice}',
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
color: AppColors.priceColor,
),
),
],
),
),
],
),
),
],
),
Positioned(
top: 8,
right: 8,
child: ElevatedButton(
style: ElevatedButton.styleFrom(
backgroundColor: AppColors.lightTheme,
shape: const CircleBorder(),
),
child: Icon(
isFavorite ? Icons.favorite : Icons.favorite_border,
color: AppColors.buttonColor,
),
onPressed: () {
favoriteProvider.toggleFavorite(product);
},
),
),
],
),
),
),
);
},
),
);
}
},
),
],
),
),
),
);
}}),
],
),
),
),
),
);
}
}
此外，当我运行 flutter run 命令时，应用程序运行正常并且一切正常 请任何人都可以帮助我很多天了
尝试在 Android 设备上启用开发者模式，Flutter 医生这样说。