Flutter支付集成插件kyrmannpay_flutter的使用

kyrmannpay_flutter 是一个用于在 Flutter 应用中集成支付功能的插件。以下是如何使用该插件的基本步骤：

1. 添加依赖

首先，你需要在 pubspec.yaml 文件中添加 kyrmannpay_flutter 插件的依赖。

dependencies:
  flutter:
    sdk: flutter
  kyrmannpay_flutter: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来安装依赖。

2. 初始化插件

在你的 Dart 代码中，首先需要初始化 kyrmannpay_flutter 插件。

import 'package:kyrmannpay_flutter/kyrmannpay_flutter.dart';

void initializePayment() async {
  await KyrmannPayFlutter.initialize(
    apiKey: 'YOUR_API_KEY',
    environment: Environment.sandbox, // 或者 Environment.production
  );
}

3. 创建支付订单

接下来，你可以创建一个支付订单。

void createPaymentOrder() async {
  PaymentRequest paymentRequest = PaymentRequest(
    amount: 1000, // 金额，单位通常是分
    currency: 'USD',
    description: 'Test Payment',
    customerEmail: 'customer@example.com',
  );

  PaymentResponse response = await KyrmannPayFlutter.createPayment(paymentRequest);

  if (response.success) {
    print('Payment successful: ${response.paymentId}');
  } else {
    print('Payment failed: ${response.errorMessage}');
  }
}

4. 处理支付结果

你可以通过监听事件来处理支付结果。

void listenToPaymentEvents() {
  KyrmannPayFlutter.onPaymentSuccess.listen((paymentId) {
    print('Payment succeeded: $paymentId');
  });

  KyrmannPayFlutter.onPaymentFailure.listen((error) {
    print('Payment failed: $error');
  });
}

5. 启动支付界面

最后，你可以启动支付界面来完成支付。

void startPayment() async {
  await KyrmannPayFlutter.startPayment(
    context: context,
    paymentRequest: paymentRequest,
  );
}

6. 处理回调

在支付完成后，你可以处理回调以更新订单状态或执行其他操作。

void handlePaymentCallback() {
  KyrmannPayFlutter.onPaymentSuccess.listen((paymentId) {
    // 更新订单状态或其他操作
  });

  KyrmannPayFlutter.onPaymentFailure.listen((error) {
    // 处理支付失败的情况
  });
}

7. 清理资源

在应用退出或不再需要支付功能时，可以清理资源。

void dispose() {
  KyrmannPayFlutter.dispose();
}

注意事项

• 确保你使用的是正确的 API Key 和环境（沙盒或生产）。
• 根据你的业务需求处理支付成功和失败的逻辑。
• 请参考插件的官方文档以获取更多详细信息和高级用法。

示例代码

以下是一个完整的示例代码：

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

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

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

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

class _PaymentScreenState extends State<PaymentScreen> {
  [@override](/user/override)
  void initState() {
    super.initState();
    initializePayment();
    listenToPaymentEvents();
  }

  void initializePayment() async {
    await KyrmannPayFlutter.initialize(
      apiKey: 'YOUR_API_KEY',
      environment: Environment.sandbox,
    );
  }

  void listenToPaymentEvents() {
    KyrmannPayFlutter.onPaymentSuccess.listen((paymentId) {
      print('Payment succeeded: $paymentId');
    });

    KyrmannPayFlutter.onPaymentFailure.listen((error) {
      print('Payment failed: $error');
    });
  }

  void createPaymentOrder() async {
    PaymentRequest paymentRequest = PaymentRequest(
      amount: 1000,
      currency: 'USD',
      description: 'Test Payment',
      customerEmail: 'customer@example.com',
    );

    PaymentResponse response = await KyrmannPayFlutter.createPayment(paymentRequest);

    if (response.success) {
      print('Payment successful: ${response.paymentId}');
    } else {
      print('Payment failed: ${response.errorMessage}');
    }
  }

  void startPayment() async {
    PaymentRequest paymentRequest = PaymentRequest(
      amount: 1000,
      currency: 'USD',
      description: 'Test Payment',
      customerEmail: 'customer@example.com',
    );

    await KyrmannPayFlutter.startPayment(
      context: context,
      paymentRequest: paymentRequest,
    );
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('KyrmannPay Flutter Example'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: startPayment,
          child: Text('Pay Now'),
        ),
      ),
    );
  }
}