Flutter集成Deema服务插件deema_sdk的使用

简介

Deema SDK for Flutter允许你将我们的“先买后付”（BNPL）支付服务无缝集成到你的Flutter应用程序中。该SDK简化了启动支付流程、管理交易和处理结果状态的过程，并提供了结构化的响应。

安装

在你的Flutter项目中添加Deema SDK，通过将其包含在pubspec.yaml文件中：

dependencies:
  deema_sdk: sdk_version

运行以下命令来安装包：

flutter pub get

快速开始

步骤1：导入SDK

import 'package:deema_sdk/deema_sdk.dart';

步骤2：启动SDK

使用DeemaSdk.launch方法来启动支付流程：

DeemaSdk.launch(
  context,
  "SDK_KEY", // 替换为实际的SDK密钥
  Environment.sandbox, // 可以根据实际情况选择环境
  PurchaseRequest(
    merchantOrderId: "1726", // 商户订单ID
    amount: 100.0, // 付款金额
    currencyCode: "KWD", // 货币代码
  ),
  (result) {
    if (result is Success) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text("Payment successful!")), // 显示成功信息
      );
    } else if (result is Failure) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text("Payment failed: ${result.message}")), // 显示失败信息
      );
    } else if (result is Canceled) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text("Payment was canceled")), // 显示取消信息
      );
    } else if (result is Unknown) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text("Unknown payment result")), // 显示未知结果信息
      );
    }
  },
);

示例集成

以下是将Deema SDK集成到Flutter应用中的完整示例：

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

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Deema Payment Demo',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: const PaymentScreen(),
    );
  }
}

class PaymentScreen extends StatefulWidget {
  const PaymentScreen({Key? key}) : super(key: key);

  [@override](/user/override)
  State<PaymentScreen> createState() => _PaymentScreenState();
}

class _PaymentScreenState extends State<PaymentScreen> {
  void _makePurchase(BuildContext context) {
    DeemaSdk.launch(
      context,
      "SDK_KEY", // 替换为实际的SDK密钥
      Environment.sandbox, // 可以根据实际情况选择环境
      PurchaseRequest(
        merchantOrderId: "1726", // 商户订单ID
        amount: 100.0, // 付款金额
        currencyCode: "KWD", // 货币代码
      ),
      (result) {
        if (result is Success) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text("Payment successful!")), // 显示成功信息
          );
        } else if (result is Failure) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text("Payment failed: ${result.message}")), // 显示失败信息
          );
        } else if (result is Canceled) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text("Payment was canceled")), // 显示取消信息
          );
        } else if (result is Unknown) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text("Unknown payment result")), // 显示未知结果信息
          );
        }
      },
    );
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("Deema Payment")),
      body: Center(
        child: ElevatedButton(
          onPressed: () => _makePurchase(context), // 触发付款操作
          child: const Text("Pay Now"), // 按钮文本
        ),
      ),
    );
  }
}