FastAPI + Flutter

fastApiFlutter.dart

import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart'; // ^1.0.7

void main() => runApp(MaterialApp(home: MyApp(),));

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: Text("카카오 결제")),
      body: Center(
        child: MaterialButton(
          color: Colors.blue,
          textColor: Colors.white,
          child: Text("카카오 페이 결제"),
          onPressed: () async{
            const String url = "http://127.0.0.1:8000/kakaopayf";
            return await Navigator.of(context).push<void>(
              MaterialPageRoute(
                builder: (BuildContext context) => Scaffold(
                  appBar: AppBar(title: Text("카카오 결제 ing")),
                  body: WebView(
                    initialUrl: url,
                    javascriptMode: JavascriptMode.unrestricted,
                    javascriptChannels: {
                      JavascriptChannel(
                        name: "james",
                        onMessageReceived: (JavascriptMessage jm){
                          print(jm.message.toString());
                          if( jm.message.toString() != null){
                            return Navigator.of(context).pop<void>();
                          }
                        }
                      )
                    },
                  ),
                )
              )
            );
          },
        ),
      ),
    );
  }
}