[in_app_purchase] Bump in_app_purchase_android dependency to 3.0.0 (#4065)

Bumps `in_app_purchase_android` to 3.0.0.

This PR is the final step for closing flutter/flutter#110909.

packages/in_app_purchase/in_app_purchase/CHANGELOG.md

@@ -1,5 +1,6 @@
-## NEXT
+## 3.1.6
 
+* Bumps minimum in_app_purchase_android version to 0.3.0.
 * Updates minimum supported SDK version to Flutter 3.3/Dart 2.18.
 * Aligns Dart and Flutter SDK constraints.
 

packages/in_app_purchase/in_app_purchase/example/lib/main.dart

@@ -261,16 +261,14 @@ class _MyAppState extends State<_MyApp> {
           subtitle: Text(
             productDetails.description,
           ),
-          trailing: previousPurchase != null
+          trailing: previousPurchase != null && Platform.isIOS
               ? IconButton(
                   onPressed: () => confirmPriceChange(context),
                   icon: const Icon(Icons.upgrade))
               : TextButton(
                   style: TextButton.styleFrom(
                     backgroundColor: Colors.green[800],
-                    // TODO(darrenaustin): Migrate to new API once it lands in stable: https://github.com/flutter/flutter/issues/105724
-                    // ignore: deprecated_member_use
-                    primary: Colors.white,
+                    foregroundColor: Colors.white,
                   ),
                   onPressed: () {
                     late PurchaseParam purchaseParam;
@@ -369,9 +367,7 @@ class _MyAppState extends State<_MyApp> {
           TextButton(
             style: TextButton.styleFrom(
               backgroundColor: Theme.of(context).primaryColor,
-              // TODO(darrenaustin): Migrate to new API once it lands in stable: https://github.com/flutter/flutter/issues/105724
-              // ignore: deprecated_member_use
-              primary: Colors.white,
+              foregroundColor: Colors.white,
             ),
             onPressed: () => _inAppPurchase.restorePurchases(),
             child: const Text('Restore purchases'),
@@ -462,29 +458,10 @@ class _MyAppState extends State<_MyApp> {
   }
 
   Future<void> confirmPriceChange(BuildContext context) async {
-    if (Platform.isAndroid) {
-      final InAppPurchaseAndroidPlatformAddition androidAddition =
-          _inAppPurchase
-              .getPlatformAddition<InAppPurchaseAndroidPlatformAddition>();
-      final BillingResultWrapper priceChangeConfirmationResult =
-          await androidAddition.launchPriceChangeConfirmationFlow(
-        sku: 'purchaseId',
-      );
-      if (context.mounted) {
-        if (priceChangeConfirmationResult.responseCode == BillingResponse.ok) {
-          ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
-            content: Text('Price change accepted'),
-          ));
-        } else {
-          ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-            content: Text(
-              priceChangeConfirmationResult.debugMessage ??
-                  'Price change failed with code ${priceChangeConfirmationResult.responseCode}',
-            ),
-          ));
-        }
-      }
-    }
+    // Price changes for Android are not handled by the application, but are
+    // instead handled by the Play Store. See
+    // https://developer.android.com/google/play/billing/price-changes for more
+    // information on price changes on Android.
     if (Platform.isIOS) {
       final InAppPurchaseStoreKitPlatformAddition iapStoreKitPlatformAddition =
           _inAppPurchase

packages/in_app_purchase/in_app_purchase/example/pubspec.yaml

@@ -16,7 +16,7 @@ dependencies:
     # The example app is bundled with the plugin so we use a path dependency on
     # the parent directory to use the current plugin's version.
     path: ../
-  in_app_purchase_android: ^0.2.1
+  in_app_purchase_android: ^0.3.0
   in_app_purchase_storekit: ^0.3.4
   shared_preferences: ^2.0.0
 

packages/in_app_purchase/in_app_purchase/pubspec.yaml

@@ -2,7 +2,7 @@ name: in_app_purchase
 description: A Flutter plugin for in-app purchases. Exposes APIs for making in-app purchases through the App Store and Google Play.
 repository: https://github.com/flutter/packages/tree/main/packages/in_app_purchase/in_app_purchase
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 3.1.5
+version: 3.1.6
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
@@ -21,7 +21,7 @@ flutter:
 dependencies:
   flutter:
     sdk: flutter
-  in_app_purchase_android: ^0.2.3
+  in_app_purchase_android: ^0.3.0
   in_app_purchase_platform_interface: ^1.0.0
   in_app_purchase_storekit: ^0.3.4