Flutter唯一标识符缓存插件flutter_cached_uuid的使用

获取当前项目的唯一标识符。

开始使用

FlutterCachedUuid.getUUID();

本项目是一个用于 Flutter 的插件包，包含针对 Android 和/或 iOS 的平台特定实现代码。

有关如何开始使用 Flutter 的帮助信息，请查看我们的在线文档，其中包含教程、示例、移动开发指南以及完整的 API 参考。

完整示例代码

以下是使用 flutter_cached_uuid 插件的完整示例代码：

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

import 'package:flutter/services.dart';
import 'package:flutter_cached_uuid/flutter_cached_uuid.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  // 存储获取到的 UUID
  String _uuid = 'Unknown';

  // 初始化插件实例
  final _flutterCachedUuidPlugin = FlutterCachedUuid();

  [@override](/user/override)
  void initState() {
    super.initState();
    // 调用初始化方法获取 UUID
    initPlatformState();
  }

  // 异步方法获取 UUID
  Future<void> initPlatformState() async {
    // 获取 UUID
    String uuid;
    // 处理可能发生的异常
    try {
      uuid = await _flutterCachedUuidPlugin.getUUID() ?? 'Unknown platform version';
    } on PlatformException {
      uuid = 'Failed to get platform version.';
    }

    // 如果组件被移除，则不更新状态
    if (!mounted) return;

    // 更新状态
    setState(() {
      _uuid = uuid;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Text('UUID: $_uuid\n'),
        ),
      ),
    );
  }
}

代码解释

1. 导入必要的库：

   import 'package:flutter/material.dart';
   import 'dart:async';
   
   import 'package:flutter/services.dart';
   import 'package:flutter_cached_uuid/flutter_cached_uuid.dart';
   

2. 创建主应用类：

   void main() {
     runApp(const MyApp());
   }
   
   class MyApp extends StatefulWidget {
     const MyApp({super.key});
   
     [@override](/user/override)
     State<MyApp> createState() => _MyAppState();
   }
   

3. 定义状态类并初始化插件：

   class _MyAppState extends State<MyApp> {
     String _uuid = 'Unknown'; // 存储获取到的 UUID
     final _flutterCachedUuidPlugin = FlutterCachedUuid(); // 初始化插件实例
   
     [@override](/user/override)
     void initState() {
       super.initState();
       initPlatformState(); // 初始化 UUID
     }
   

4. 异步方法获取 UUID：

   Future<void> initPlatformState() async {
     String uuid;
     try {
       uuid = await _flutterCachedUuidPlugin.getUUID() ?? 'Unknown platform version';
     } on PlatformException {
       uuid = 'Failed to get platform version.';
     }
   
     if (!mounted) return;
   
     setState(() {
       _uuid = uuid;
     });
   }
   

5. 构建界面：

   [@override](/user/override)
   Widget build(BuildContext context) {
     return MaterialApp(
       home: Scaffold(
         appBar: AppBar(
           title: const Text('Plugin example app'),
         ),
         body: Center(
           child: Text('UUID: $_uuid\n'),
         ),
       ),
     );
   }