Flutter钱包管理插件metaone_wallet_sdk_android的使用

Flutter钱包管理插件metaone_wallet_sdk_android的使用

<metaone_wallet_sdk_android>

此插件为metaone_wallet_sdk的Android实现。

使用方法

该插件已被官方推荐（endorsed），这意味着你可以直接使用metaone_wallet_sdk，无需额外配置。当你导入并使用metaone_wallet_sdk时，本插件会自动包含在你的应用中。

以下是一个完整的示例Demo，展示如何使用metaone_wallet_sdk_android插件来实现钱包管理功能。

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

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

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

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

class _WalletManagementPageState extends State<WalletManagementPage> {
  String walletBalance = "加载中...";

  // 初始化插件
  void initializePlugin() async {
    await MetaoneWalletSdk.initialize();
  }

  // 获取钱包余额
  Future<void> getWalletBalance() async {
    try {
      final balance = await MetaoneWalletSdk.getBalance();
      setState(() {
        walletBalance = balance;
      });
    } catch (e) {
      setState(() {
        walletBalance = "获取失败: $e";
      });
    }
  }

  [@override](/user/override)
  void initState() {
    super.initState();
    initializePlugin();
    getWalletBalance();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("钱包管理"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(
              "当前余额:",
              style: TextStyle(fontSize: 20),
            ),
            SizedBox(height: 20),
            Text(
              walletBalance,
              style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: () {
                getWalletBalance();
              },
              child: Text("刷新余额"),
            ),
          ],
        ),
      ),
    );
  }
}

代码解释

1. 导入必要的库

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

   这里导入了Flutter框架的核心库以及metaone_wallet_sdk插件。

2. 初始化插件

   void initializePlugin() async {
     await MetaoneWalletSdk.initialize();
   }
   

   在initializePlugin函数中调用MetaoneWalletSdk.initialize()来初始化插件。

3. 获取钱包余额

   Future<void> getWalletBalance() async {
     try {
       final balance = await MetaoneWalletSdk.getBalance();
       setState(() {
         walletBalance = balance;
       });
     } catch (e) {
       setState(() {
         walletBalance = "获取失败: $e";
       });
     }
   }
   

   getWalletBalance函数通过调用MetaoneWalletSdk.getBalance()来获取钱包余额，并更新UI状态。

4. UI界面

   [@override](/user/override)
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
         title: Text("钱包管理"),
       ),
       body: Center(
         child: Column(
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Text(
               "当前余额:",
               style: TextStyle(fontSize: 20),
             ),
             SizedBox(height: 20),
             Text(
               walletBalance,
               style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
             ),
             SizedBox(height: 20),
             ElevatedButton(
               onPressed: () {
                 getWalletBalance();
               },
               child: Text("刷新余额"),
             ),
           ],
         ),
       ),
     );
   }