in_app_purchase_utils 0.0.4

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

InApp Purchase Utils

A simple and easy-to-use wrapper for the in_app_purchase plugin in Flutter, providing a streamlined integration process for handling in-app purchases.

Features

• Simplified methods for purchasing and managing subscriptions.
• Easy-to-follow integration flow.
• Supports both Android and iOS platforms.
• Fetch available products and subscriptions effortlessly.
• Handles purchase validation and transaction restoration.

Installation

Add the dependency to your pubspec.yaml:

$ flutter pub add in_app_purchase_utils

This will add a line in your pubspec.yaml file under dependencies block.

dependencies:
  in_app_purchase_utils:

Usage

Import the package

import 'package:your_plugin_name/your_plugin_name.dart';

Add in_app_purchase plugin:

You need to add in_app_purchase plugin in your project so that you can access some default classes like ProductDetails. To add the dependency in your pubspec.yaml, use the flutter command mentioned below.

$ flutter pub add in_app_purchase

Initialize the plugin

To initialize the plugin, you need to call InAppPurchaseService.instance.initialize() method.

Before the initialisation, make sure you put below mentioned statement in the first line of main() method.

WidgetsFlutterBinding.ensureInitialized();

There are 2 required params in this method.

1. validationAPI - Pass default iTunes or SandBox API according to your flavor / mode
2. secretKey - Pass your InApp purchase secret key

await InAppPurchaseService.instance
    .initialize(
      validationAPI: "<receipt_validation_API>", 
      secretKey: "<secret_key>"
    );

Fetch available products

Pass the list of your products as List

List<ProductDetails> products = await InAppPurchaseService.instance
    .fetchProducts(["<product_id_1>", "<product_id_2>", "<product_id_n>"]);

Purchase a product

Make call to purchaseSubscription() inorder to purchase a subscription. There will be 3 input params in this method.

1. productId - Pass the productId which you want to make purchase of
2. onSuccess - Purchase success callback
3. onFailure - Purchase failure callback

InAppPurchaseService pInstance = InAppPurchaseService.instance;
pInstance.purchaseSubscription(
  "<product_id>",
  onPurchaseSuccess,
  onPurchaseFailure,
);

Restore purchases

Make call to purchaseSubscription() inorder to purchase a subscription. There will be 2 input params in this method.

1. onSuccess - Purchase success callback
2. onFailure - Purchase failure callback

InAppPurchaseService pInstance = InAppPurchaseService.instance;
pInstance.restorePurchases(
  (statusMessage, purchaseDetails) {},
  (statusMessage, purchaseDetails) {}
);

License

This project is licensed under the MIT License - see the LICENSE file for details.

Contributions

Contributions are welcome! Feel free to open issues or submit pull requests to improve the plugin.

Support

For any issues or feature requests, please open an issue on GitHub.