最近我更新了Flutter SDK的版本,在使用Image.network()
时遇到了一个错误:
socket_patch.dart
static Future<List<InternetAddress>> lookup(String host,
{InternetAddressType type = InternetAddressType.any}) {
return _IOService._dispatch(_IOService.socketLookup, [host, type._value])
.then((response) {
if (isErrorResponse(response)) {
throw createError(response, "Failed host lookup: '$host'"); // Debug mode stops here
}
return [
for (List<Object?> result in (response as List).skip(1))
_InternetAddress(
InternetAddressType._from(result[0] as int),
result[1] as String,
host,
result[2] as Uint8List,
result[3] as int)
];
});
}
然后,当我恢复调试器时,错误消失了。它不依赖于链接,我把它放在Image.network()
中。
Main.dart
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
void _incrementCounter() {
setState(() {
_counter++;
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Image.network(
'https://s3-alpha-sig.figma.com/img/738e/6e77/a92971e6075b85d18be0de93205d90cb?Expires=1687737600&Signature=CviOR2T3fFb157NIU9razzN2LfobSUjCGyZ76AI506SnPxZn8ec2WgO7251cjwYSENykkTl7Y-K~V7jEMXnh3r072fBmyJUj7ptB2vyHkOTg3HKAMS0GhSorPbmVem7~0jPn4kKk5Mrcgapkf-GaUVZTvmMc5~pBZCfjRkysIkLPOxj8f2ArUqkRW1eCBNsbxEqoJfvnQMOhcsnMZsURMznUrYKRETyVxdbL0lo2YEv7ZWuIUfSu8LEFDpx2t60IIijSwV9bQ9NU2DDjTWncVNyHr5HmElMiejKwCXexvaSCYQJXdCkBectc0JW0-aaFjfgqbcPrbvgZ53Q~K8QzBg__&Key-Pair-Id=APKAQ4GOSFWCVNEHN3O4,'),
const Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headlineMedium,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: const Icon(Icons.add),
),
);
}
}
有人能帮我解决这个问题吗?我找了很多地方,但没有找到任何关于它的东西。
1条答案
按热度按时间nle07wnf1#
我在模拟器上遇到了主机查找错误,但当我禁用热点,切换Wi-Fi网络或在设备上使用VPN时,它得到了解决。然而,当我执行您提供的代码时,它成功地产生了结果,没有任何错误,只要我从链接中删除了额外的逗号(,)。