kinetic_sdk 是一个用于与 Kinetic 区块链交互的 Flutter 插件。Kinetic 是一个基于 Solana 区块链的去中心化应用平台，专注于支付和金融应用。kinetic_sdk 插件允许开发者在 Flutter 应用中轻松地与 Kinetic 网络进行交互，例如创建账户、发送交易、查询余额等。

以下是如何在 Flutter 项目中使用 kinetic_sdk 插件的基本步骤：

1. 添加依赖

首先，在 pubspec.yaml 文件中添加 kinetic_sdk 依赖：

dependencies:
  flutter:
    sdk: flutter
  kinetic_sdk: ^1.0.0  # 请检查最新版本

然后运行 flutter pub get 来安装依赖。

2. 初始化 Kinetic SDK

在你的 Dart 代码中，首先需要初始化 KineticSdk 实例。通常，你需要在应用的启动阶段进行初始化。

import 'package:kinetic_sdk/kinetic_sdk.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // 初始化 Kinetic SDK
  final kineticSdk = KineticSdk(
    endpoint: 'https://your-kinetic-endpoint.com', // Kinetic 网络端点
    environment: 'devnet', // 环境，例如 'devnet' 或 'mainnet'
    index: 1, // 索引
  );

  await kineticSdk.init();

  runApp(MyApp(kineticSdk: kineticSdk));
}

3. 使用 Kinetic SDK 进行交互

在初始化 KineticSdk 实例后，你可以使用它来执行各种操作，例如创建账户、发送交易、查询余额等。

创建账户

final account = await kineticSdk.createAccount();
print('New account created: ${account.publicKey}');

查询余额

final balance = await kineticSdk.getBalance(account.publicKey);
print('Account balance: $balance');

发送交易

final transaction = await kineticSdk.sendTransaction(
  sender: account.publicKey,
  receiver: 'receiver-public-key',
  amount: 100, // 金额
  memo: 'Test transaction', // 备注
);

print('Transaction sent: ${transaction.signature}');

4. 处理错误

在使用 kinetic_sdk 时，可能会遇到各种错误，例如网络错误、交易失败等。你可以使用 try-catch 块来捕获和处理这些错误。

try {
  final balance = await kineticSdk.getBalance(account.publicKey);
  print('Account balance: $balance');
} catch (e) {
  print('Error fetching balance: $e');
}

5. 清理资源

在应用退出或不再需要 KineticSdk 实例时，记得清理资源。

await kineticSdk.dispose();

6. 完整示例

以下是一个完整的 Flutter 应用示例，展示了如何使用 kinetic_sdk 创建账户、查询余额和发送交易。

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

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  final kineticSdk = KineticSdk(
    endpoint: 'https://your-kinetic-endpoint.com',
    environment: 'devnet',
    index: 1,
  );

  await kineticSdk.init();

  runApp(MyApp(kineticSdk: kineticSdk));
}

class MyApp extends StatelessWidget {
  final KineticSdk kineticSdk;

  MyApp({required this.kineticSdk});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Kinetic SDK Example')),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              ElevatedButton(
                onPressed: () async {
                  try {
                    final account = await kineticSdk.createAccount();
                    print('New account created: ${account.publicKey}');
                  } catch (e) {
                    print('Error creating account: $e');
                  }
                },
                child: Text('Create Account'),
              ),
              ElevatedButton(
                onPressed: () async {
                  try {
                    final balance = await kineticSdk.getBalance('your-public-key');
                    print('Account balance: $balance');
                  } catch (e) {
                    print('Error fetching balance: $e');
                  }
                },
                child: Text('Get Balance'),
              ),
              ElevatedButton(
                onPressed: () async {
                  try {
                    final transaction = await kineticSdk.sendTransaction(
                      sender: 'your-public-key',
                      receiver: 'receiver-public-key',
                      amount: 100,
                      memo: 'Test transaction',
                    );
                    print('Transaction sent: ${transaction.signature}');
                  } catch (e) {
                    print('Error sending transaction: $e');
                  }
                },
                child: Text('Send Transaction'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}