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[in_app_purchase] iOS example using in_app_purchase_ios package (flutter#3870)
Adds the example app for the in_app_purchase_ios platform implementation. All files that are part of the in_app_purcase_ios/example/ios folder have been copied over from in_app_purchase/example/ios. From all these files I only had to update the following: Renamed in_app_purchase_ios/ios/in_app_purchase.podspec file to in_app_purchase_ios/ios/in_app_purchase_ios.podspec (to match the new package name); Update the @import in_app_purchase statement to @import in_app_purchase_ios in the following files: InAppPurchasePluginTest.m PaymentQueueTest.m ProductRequestHandlerTest.m Stubs.h TranslatorTest.m I have tested the example project on my iPhone 12 Mini and it works fine. Also the iOS specific unit-test run correctly. Adds the iOS implementation for issue flutter/flutter#81695
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‎packages/in_app_purchase/in_app_purchase_ios/example/README.md

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# In App Purchase iOS Example
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Demonstrates how to use the In App Purchase iOS (IAP) Plugin.
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## Getting Started
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### Preparation
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There's a significant amount of setup required for testing in app purchases
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successfully, including registering new app IDs and store entries to use for
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testing in App Store Connect. The App Store requires developers to configure
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an app with in-app items for purchase to call their in-app-purchase APIs.
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The App Store has extensive documentation on how to do this, and we've also
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included a high level guide below.
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* [In-App Purchase (App Store)](https://developer.apple.com/in-app-purchase/)
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### iOS
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When using Xcode 12 and iOS 14 or higher you can run the example in the simulator or on a device without
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having to configure an App in App Store Connect. The example app is set up to use StoreKit Testing configured
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in the `example/ios/Runner/Configuration.storekit` file (as documented in the article [Setting Up StoreKit Testing in Xcode](https://developer.apple.com/documentation/xcode/setting_up_storekit_testing_in_xcode?language=objc)).
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To run the application take the following steps (note that it will only work when running from Xcode):
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1. Open the example app with Xcode, `File > Open File` `example/ios/Runner.xcworkspace`;
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2. Within Xcode edit the current scheme, `Product > Scheme > Edit Scheme...` (or press `Command + Shift + ,`);
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3. Enable StoreKit testing:
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a. Select the `Run` action;
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b. Click `Options` in the action settings;
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c. Select the `Configuration.storekit` for the StoreKit Configuration option.
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4. Click the `Close` button to close the scheme editor;
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5. Select the device you want to run the example App on;
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6. Run the application using `Product > Run` (or hit the run button).
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When testing on pre-iOS 14 you can't run the example app on a simulator and you will need to configure an app in App Store Connect. You can do so by following the steps below:
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1. Follow ["Workflow for configuring in-app
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purchases"](https://help.apple.com/app-store-connect/#/devb57be10e7), a
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detailed guide on all the steps needed to enable IAPs for an app. Complete
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steps 1 ("Sign a Paid Applications Agreement") and 2 ("Configure in-app
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purchases").
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For step #2, "Configure in-app purchases in App Store Connect," you'll want
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to create the following products:
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- A consumable with product ID `consumable`
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- An upgrade with product ID `upgrade`
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- An auto-renewing subscription with product ID `subscription_silver`
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- An non-renewing subscription with product ID `subscription_gold`
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2. In XCode, `File > Open File` `example/ios/Runner.xcworkspace`. Update the
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Bundle ID to match the Bundle ID of the app created in step #1.
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3. [Create a Sandbox tester
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account](https://help.apple.com/app-store-connect/#/dev8b997bee1) to test the
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in-app purchases with.
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4. Use `flutter run` to install the app and test it. Note that you need to test
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it on a real device instead of a simulator. Next click on one of the products
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in the example App, this enables the "SANDBOX ACCOUNT" section in the iOS
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settings. You will now be asked to sign in with your sandbox test account to
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complete the purchase (no worries you won't be charged). If for some reason
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you aren't asked to sign-in or the wrong user is listed, go into the iOS
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settings ("Settings" -> "App Store" -> "SANDBOX ACCOUNT") and update your
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sandbox account from there. This procedure is explained in great detail in
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the [Testing In-App Purchases with Sandbox](https://developer.apple.com/documentation/storekit/in-app_purchase/testing_in-app_purchases_with_sandbox?language=objc) article.
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**Important:** signing into any production service (including iTunes!) with the
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sandbox test account will permanently invalidate it.

‎packages/in_app_purchase/in_app_purchase_ios/example/integration_test/in_app_purchase_test.dart

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// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// @dart = 2.9
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import 'package:flutter_test/flutter_test.dart';
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import 'package:in_app_purchase_ios/in_app_purchase_ios.dart';
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import 'package:in_app_purchase_platform_interface/in_app_purchase_platform_interface.dart';
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import 'package:integration_test/integration_test.dart';
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void main() {
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IntegrationTestWidgetsFlutterBinding.ensureInitialized();
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testWidgets('Can create InAppPurchaseAndroid instance',
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(WidgetTester tester) async {
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InAppPurchaseIosPlatform.registerPlatform();
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final InAppPurchasePlatform androidPlatform =
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InAppPurchasePlatform.instance;
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expect(androidPlatform, isNotNull);
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});
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}

‎packages/in_app_purchase/in_app_purchase_ios/example/ios/Flutter/AppFrameworkInfo.plist

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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CFBundleDevelopmentRegion</key>
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<string>en</string>
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<key>CFBundleExecutable</key>
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<string>App</string>
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<key>CFBundleIdentifier</key>
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<string>io.flutter.flutter.app</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>App</string>
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<key>CFBundlePackageType</key>
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<string>FMWK</string>
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<key>CFBundleShortVersionString</key>
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<string>1.0</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleVersion</key>
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<string>1.0</string>
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<key>MinimumOSVersion</key>
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<string>8.0</string>
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</dict>
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</plist>

‎packages/in_app_purchase/in_app_purchase_ios/example/ios/Flutter/Debug.xcconfig

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#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
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#include "Generated.xcconfig"

‎packages/in_app_purchase/in_app_purchase_ios/example/ios/Flutter/Release.xcconfig

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#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
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#include "Generated.xcconfig"

‎packages/in_app_purchase/in_app_purchase_ios/example/ios/Podfile

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# Uncomment this line to define a global platform for your project
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# platform :ios, '9.0'
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# CocoaPods analytics sends network stats synchronously affecting flutter build latency.
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ENV['COCOAPODS_DISABLE_STATS'] = 'true'
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project 'Runner', {
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'Debug' => :debug,
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'Profile' => :release,
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'Release' => :release,
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}
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def flutter_root
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generated_xcode_build_settings_path = File.expand_path(File.join('..', 'Flutter', 'Generated.xcconfig'), __FILE__)
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unless File.exist?(generated_xcode_build_settings_path)
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raise "#{generated_xcode_build_settings_path} must exist. If you're running pod install manually, make sure flutter pub get is executed first"
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end
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File.foreach(generated_xcode_build_settings_path) do |line|
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matches = line.match(/FLUTTER_ROOT\=(.*)/)
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return matches[1].strip if matches
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end
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raise "FLUTTER_ROOT not found in #{generated_xcode_build_settings_path}. Try deleting Generated.xcconfig, then run flutter pub get"
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end
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require File.expand_path(File.join('packages', 'flutter_tools', 'bin', 'podhelper'), flutter_root)
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flutter_ios_podfile_setup
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target 'Runner' do
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flutter_install_all_ios_pods File.dirname(File.realpath(__FILE__))
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target 'in_app_purchase_pluginTests' do
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inherit! :search_paths
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# Matches in_app_purchase test_spec dependency.
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pod 'OCMock','3.5'
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end
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end
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post_install do |installer|
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installer.pods_project.targets.each do |target|
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flutter_additional_ios_build_settings(target)
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end
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end

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