Add In-App Payments to your Flutter app with this plugin.
For help getting started with Flutter, view our online documentation.
For help on editing plugin code, view the documentation.
Add flutter_iap
as a dependency in pubspec.yaml
For help on adding as a dependency, view the documentation.
Note: You must set up billing information in your developer account corresponding with the platform you are testing (iTunes Connect / Google Play Console)
import 'package:flutter/material.dart';
import 'package:flutter_iap/flutter_iap.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
List<String> _productIds = [];
List<String> _alreadyPurchased = [];
@override
initState() {
super.initState();
init();
}
init() async {
// Android testers: You can use "android.test.purchased" to simulate a successful flow.
List<String> productIds = ["com.example.testiap"];
IAPResponse products = await FlutterIap.fetchProducts(productIds);
if (products.status != IAPResponseStatus.ok) {
print("Products not retrieved, error: ${products.status}");
return;
}
IAPResponse purchased = await FlutterIap.fetchInventory();
if (purchased.status != IAPResponseStatus.ok) {
print("Inventory not retrieved, error: ${purchased.status}");
return;
}
productIds = products.products
.map((IAPProduct product) => product.productIdentifier)
.toList();
List<String> purchasedIds = purchased.purchases
.map((IAPPurchase purchase) => purchase.productIdentifier)
.toList();
if (!mounted) return;
setState(() {
_productIds = productIds;
_alreadyPurchased = purchasedIds;
});
}
@override
Widget build(BuildContext context) {
String nextPurchase = _productIds.firstWhere(
(id) => !_alreadyPurchased.contains(id),
orElse: () => null,
);
List<Text> list = [];
_alreadyPurchased.forEach((productId) {
list.add(Text(productId));
});
if (list.isEmpty) {
list.add(Text("No previous purchases found."));
} else {
list.insert(0, Text("Already purchased:"));
}
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text("flutter_iap example app"),
),
body: Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(
_productIds.isNotEmpty
? "Available Products to purchase: $_productIds"
: "Not working?\n"
"Check that you set up in app purchases in\n"
"iTunes Connect / Google Play Console",
textAlign: TextAlign.center,
textScaleFactor: 1.25,
),
SizedBox(height: 24.0),
].followedBy(list).toList(),
),
),
floatingActionButton: nextPurchase != null
? FloatingActionButton(
child: Icon(Icons.monetization_on),
onPressed: () async {
IAPResponse response = await FlutterIap.buy(nextPurchase);
if (response.purchases != null) {
List<String> purchasedIds = response.purchases
.map((IAPPurchase purchase) =>
purchase.productIdentifier)
.toList();
setState(() {
_alreadyPurchased = purchasedIds;
});
}
},
)
: Container(),
),
);
}
}
This project welcomes PRs to fix issues and improve functionality.
To get started, clone the git repository to a local directory (flutter_iap
), and run:
$ flutter create --template=plugin --ios-language=swift .
You can then use flutter run
as usual in the example
directory to get started.