Flutter支付集成插件p24_sdk的使用

1. 项目配置

iOS配置

在Xcode项目的设置中，将“iOS Deployment Target”设置为9.0或更高版本。这是库在iOS上正常工作的最低要求。

添加依赖项

在pubspec.yaml文件的dependencies部分添加以下代码以导入p24_sdk：

dependencies:
  p24_sdk: ^x.x.x

在你的Dart文件中导入p24_sdk库：

import 'package:p24_sdk/p24_sdk.dart';

2. SSL Pinning

可以通过以下方式启用SSL Pinning：

await SdkConfig.setCertificatePinningEnabled(true);

注意：证书有有效期，请确保及时更新。

3. Finish on Back Button

可以控制WebView调用时返回按钮的行为：

await SdkConfig.setFinishOnBackButtonEnabled(true);

4. trnRequest 交易调用

注册交易时需要添加额外参数，例如：

P24SdkVersion.value().then((value) => print("Sdk version: $value"));
TrnRequestParams params = TrnRequestParams(token: _token, isSandbox: true);
P24SDK.trnRequest(params).then((response) {
    // handle response
});

示例Demo

下面是一个完整的示例demo，展示了如何使用p24_sdk进行基本的支付集成：

import 'package:flutter/material.dart';
import 'package:p24_sdk/p24_sdk.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'P24 SDK Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  String _sdkVersion = "Unknown";
  String _responseMessage = "";

  @override
  void initState() {
    super.initState();
    _initializeSdk();
  }

  Future<void> _initializeSdk() async {
    await SdkConfig.setCertificatePinningEnabled(true);
    await SdkConfig.setFinishOnBackButtonEnabled(true);

    P24SdkVersion.value().then((value) {
      setState(() {
        _sdkVersion = value;
      });
    });
  }

  void _performTransaction() {
    String token = "YOUR_TRANSACTION_TOKEN"; // Replace with your actual token
    TrnRequestParams params = TrnRequestParams(token: token, isSandbox: true);
    
    P24SDK.trnRequest(params).then((response) {
      setState(() {
        if (response.sdkStatus == SdkStatus.success) {
          _responseMessage = "Transaction successful!";
        } else if (response.sdkStatus == SdkStatus.error) {
          _responseMessage = "Error: ${response.payload}";
        } else if (response.sdkStatus == SdkStatus.cancel) {
          _responseMessage = "Transaction canceled.";
        }
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('P24 SDK Demo'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              'SDK Version: $_sdkVersion',
              style: Theme.of(context).textTheme.headline6,
            ),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: _performTransaction,
              child: Text('Perform Transaction'),
            ),
            SizedBox(height: 20),
            Text(
              _responseMessage,
              style: Theme.of(context).textTheme.bodyText1,
            ),
          ],
        ),
      ),
    );
  }
}

此示例展示了如何初始化p24_sdk库并执行一个简单的交易请求。请根据您的实际需求和环境调整代码中的参数和逻辑。