internal 0.0.1

bravo merchant internal plugin

example/lib/main.dart

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

import 'package:flutter/services.dart';
import 'package:internal/internal.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  final _internalPlugin = Internal();

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

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
    Map order = {
      'method':'pay',
      'amount':1,
      'isMerchant':false,
      'tip':0,
      'address':'7440 Fraser Park Dr, Burnaby, BC V5J 5B9',
      'name':'IOTPAY',
      'orderno':'WM20240111001328490423881796',
      'datetime':'2024-01-10 16:13',
       'msg':'此二维码用于退款',
      'labelMerchantCopy':'商户存根',
      'labelPayType':'交易类型',
      'labelPayDate':'交易时间',
      'labelOrderNO':'支付订单号',
      'labelTip':'小费',
      'labelSubTotal':'实付金额',
      'labelTotal':'总金额'
    };
    Map refund = {
      'method':'refund',
      'refundamount':1,
      'isMerchant':false,
      'name':'IOTPAY',
      'orderno':'RN2024011100132849042383434',
      'ordernoOriginal':'WM20240111001328490423881796',
      'datetime':'2024-01-10 16:13',
      'msg':'This QR Code is used for refund',
      'labelMerchantCopy':'商户存根',
      'labelPayType':'交易类型',
      'labelPayDate':'交易时间',
      'labelOrderNOOriginal':'支付订单号',
      'labelOrderNO':'退款订单号',
      'labelRefundAmount':'退款金额'
    };
      platformVersion =
          await _internalPlugin.internalRequest(refund) ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get request reault.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Text('Running on: $_platformVersion\n'),
        ),
      ),
    );
  }
}