flutter - Flutter Hive 包初始化错误
问题描述
我尝试在我的应用程序中使用Hive包。但是当我在我的应用程序中初始化时收到错误消息:
在构建 MyApp(dirty): Box not found 时抛出了以下 HiveError。您是否忘记调用 Hive.openBox()?
她是我的代码:
import 'package:flutter/material.dart';
import 'package:hive/hive.dart';
import 'package:hive_flutter/hive_flutter.dart';
import 'dart:io';
import 'package:path_provider/path_provider.dart' as path_provider;
void main() async {
WidgetsFlutterBinding.ensureInitialized();
final appDocDir = await path_provider.getApplicationDocumentsDirectory();
Hive.init(appDocDir.path);
runApp(MyApp());
final box = await Hive.openBox('storage');
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
final box = Hive.box('storage');
return MaterialApp(
title: 'Test App',
debugShowCheckedModeBanner: false,
home: CheckAuth(),
);
}
}
class CheckAuth extends StatefulWidget {
@override
_CheckAuthState createState() => _CheckAuthState();
}
class _CheckAuthState extends State<CheckAuth> {
@override
Widget build(BuildContext context) {
return Scaffold(
body: Text('Hive initialised!'),
);
}
}
模拟器
- API:28
- 安卓:9
套餐
environment:
sdk: ">=2.7.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
hive: ^1.4.4+1
hive_flutter: ^0.3.1
http: ^0.12.2
cupertino_icons: ^1.0.0
path_provider: ^1.6.24
dev_dependencies:
flutter_test:
sdk: flutter
hive_generator: ^0.8.2
build_runner: ^1.10.11
flutter:
uses-material-design: true
我的代码哪里有错误?
解决方案
你为什么不使用await Hive.initFlutter()
而不是Hive.init()
?前者应该在特定平台上处理正确的应用程序文件夹路径并将其文件放在那里。
它是package:hive_flutter/hive_flutter.dart的一部分,它处理 Flutter 特定的东西