Flutter安全存储插件flutter_secure_storage_x_linux的使用

Flutter 安全存储插件 flutter_secure_storage_x_linux 的使用

flutter_secure_storage_x_linux

flutter_secure_storage_x_linux 是 flutter_secure_storage_x 插件在 Linux 平台上的实现。

使用方法

这个包是被官方支持的（即 endorsed），这意味着你可以直接像使用其他 Flutter 包一样正常使用 flutter_secure_storage_x。当你这样使用时，这个包会自动包含在你的应用中。

以下是一个简单的示例，演示如何在 Flutter 应用中使用 flutter_secure_storage_x 插件来存储和读取敏感数据：

import 'package:flutter/material.dart';
import 'package:flutter_secure_storage/flutter_secure_storage.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: SecureStorageScreen(),
    );
  }
}

class SecureStorageScreen extends StatefulWidget {
  [@override](/user/override)
  _SecureStorageScreenState createState() => _SecureStorageScreenState();
}

class _SecureStorageScreenState extends State<SecureStorageScreen> {
  final storage = const FlutterSecureStorage();

  // 存储敏感数据
  Future<void> writeData() async {
    await storage.write(key: 'my_key', value: 'my_secret_value');
    print('Data written successfully.');
  }

  // 读取敏感数据
  Future<void> readData() async {
    String? value = await storage.read(key: 'my_key');
    if (value != null) {
      print('Read data: $value');
    } else {
      print('No data found.');
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Secure Storage Example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: () => writeData(),
              child: Text('Write Data'),
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () => readData(),
              child: Text('Read Data'),
            ),
          ],
        ),
      ),
    );
  }
}

在这个示例中：

1. 导入必要的包：

   import 'package:flutter/material.dart';
   import 'package:flutter_secure_storage/flutter_secure_storage.dart';
   

2. 创建一个 Flutter 应用：

   void main() {
     runApp(MyApp());
   }
   

3. 定义一个状态管理类：

   class _SecureStorageScreenState extends State<SecureStorageScreen> {
     final storage = const FlutterSecureStorage();
   

4. 编写数据到存储：

   Future<void> writeData() async {
     await storage.write(key: 'my_key', value: 'my_secret_value');
     print('Data written successfully.');
   }
   

5. 从存储中读取数据：

   Future<void> readData() async {
     String? value = await storage.read(key: 'my_key');
     if (value != null) {
       print('Read data: $value');
     } else {
       print('No data found.');
     }
   }
   

6. 在 UI 中添加按钮以触发写入和读取操作：

   [@override](/user/override)
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: Text('Flutter Secure Storage Example'),
       ),
       body: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             ElevatedButton(
               onPressed: () => writeData(),
               child: Text('Write Data'),
             ),
             SizedBox(height: 20),
             ElevatedButton(
               onPressed: () => readData(),
               child: Text('Read Data'),
             ),
           ],
         ),
       ),
     );
   }