인앱결제 - 상품 구매

main.dart

import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'package:in_app_purchase_android/in_app_purchase_android.dart';

void main() {
  if (defaultTargetPlatform == TargetPlatform.android) {
    InAppPurchaseAndroidPlatformAddition.enablePendingPurchases();
  }
  runApp(Sys());
}

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

  @override
  Widget build(BuildContext context) => MaterialApp(
    onGenerateRoute: (RouteSettings route) => MaterialPageRoute(
      settings: RouteSettings(name: MainPage.path),
      builder: (context) => MainPage()
    ),
  );
}

class MainPage extends StatefulWidget {
  MainPage({Key? key}) : super(key: key);
  static const String path = "/";

  @override
  State<MainPage> createState() => _MainPageState();
}

class _MainPageState extends State<MainPage> {
  final InAppPurchase _inAppPurchase = InAppPurchase.instance;
  List<ProductDetails> view = [];

  Future fetch() async{
    final bool available = await InAppPurchase.instance.isAvailable();
    if (available) {
      Set<String> ids = Set<String>.from(["product1","2_02202", "1_011",]);
      ProductDetailsResponse res = await _inAppPurchase.queryProductDetails(ids);
      print(res.productDetails.toString());
      this.view = res.productDetails;
    }
    if(!mounted) return;
    setState(() {});
  }

  @override
  void initState() {
    Future(this.fetch);
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: this.view.isEmpty
        ? Center(child: Text("Load"))
        : Container(
          padding: EdgeInsets.all(10.0),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: this.view.map<Widget>(
              (ProductDetails p) => GestureDetector(
                onTap: () async{
                  final PurchaseParam purchaseParam = PurchaseParam(productDetails: p);
                  await showDialog(
                    context: context,
                    builder: (context) => AlertDialog(
                      title: Text("Buy"),
                      actions: [
                        TextButton(
                          child: Text("buyConsumable - 소모"),
                          onPressed: () async{
                            await InAppPurchase.instance.buyConsumable(purchaseParam: purchaseParam);
                            Navigator.of(context).pop();
                          },
                        ),
                        TextButton(
                          child: Text("buyNonConsumable - 비소모"),
                          onPressed: () async{
                            await InAppPurchase.instance.buyNonConsumable(purchaseParam: purchaseParam);
                            Navigator.of(context).pop();
                          },
                        ),
                        TextButton(
                          child: Text("Close"),
                          onPressed: () async => Navigator.of(context).pop(),
                        )
                      ],
                    )
                  );
                },
                child: Text("${p.title} : ${p.price}")
              )
            ).toList(),
          ),
        )
    );
  }
}