in_app_purchase_utils 0.0.4

Utility package to easily handle all the functionalities of in_app_purchase plugin.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:in_app_purchase_utils/in_app_purchase_utils/in_app_purchase_callbacks.dart';
import 'package:in_app_purchase_utils/in_app_purchase_utils/in_app_purchase_service.dart';
import 'package:in_app_purchase_utils/in_app_purchase_utils/purchase_details.dart';

void main() async {

  WidgetsFlutterBinding.ensureInitialized();

  /// Initialize the service class
  /// [validationAPI] Pass iTune or sandbox receipt validation API
  /// depending on the flavor(production or staging).
  await InAppPurchaseService.instance
      .initialize(validationAPI: "<receipt_validation_API>", secretKey: "<secret_key>");


  /// Fetch your products by providing all your product ids as List<String>.
  await InAppPurchaseService.instance
      .fetchProducts(["<product_id_1>", "<product_id_2>", "<product_id_n>"]);

  runApp(const MyApp());
}

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

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

class _MyAppState extends State<MyApp> with InAppPurchaseCallback {

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: TextButton(onPressed: onPurchaseTap, child: const Text("Make Purchase")),
        ),
      ),
    );
  }

  void onPurchaseTap() {
    InAppPurchaseService pInstance = InAppPurchaseService.instance;
    pInstance.restorePurchases(
            (statusMessage, purchaseDetails) {},
            (statusMessage, purchaseDetails) {});
    pInstance.purchaseSubscription(
      "<product_id>",
      onPurchaseSuccess,
      onPurchaseFailure,
    );
  }

  @override
  void onPurchaseFailure(String statusMessage, PurchaseDetails purchaseDetails) {
    print("Failed while purchasing ${purchaseDetails.productID}");
  }

  @override
  void onPurchaseSuccess(String statusMessage, PurchaseDetails purchaseDetails) {
    print("${purchaseDetails.productID} purchased successfully");
  }
}