Demonstrates how to use the flutter_inapp_purchase plugin.
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Below code is just a cp from example project. You can test this in real example project.
class InApp extends StatefulWidget {
@override
_InAppState createState() => new _InAppState();
}
class _InAppState extends State<InApp> {
StreamSubscription _purchaseUpdatedSubscription;
StreamSubscription _purchaseErrorSubscription;
final List<String> _productLists = Platform.isAndroid
? [
'android.test.purchased',
'point_1000',
'5000_point',
'android.test.canceled',
]
: ['com.cooni.point1000', 'com.cooni.point5000'];
String _platformVersion = 'Unknown';
List<IAPItem> _items = [];
List<PurchasedItem> _purchases = [];
@override
void initState() {
super.initState();
initPlatformState();
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
String platformVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
try {
platformVersion = await FlutterInappPurchase.instance.platformVersion;
} on PlatformException {
platformVersion = 'Failed to get platform version.';
}
// prepare
var result = await FlutterInappPurchase.instance.initConnection;
print('result: $result');
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
// setState to update our non-existent appearance.
if (!mounted) return;
setState(() {
_platformVersion = platformVersion;
});
// refresh items for android
try {
String msg = await FlutterInappPurchase.instance.consumeAllItems;
print('consumeAllItems: $msg');
} catch (err) {
print('consumeAllItems error: $err');
}
_purchaseUpdatedSubscription = FlutterInappPurchase.purchaseUpdated.listen((productItem) {
print('purchase-updated: $productItem');
});
_purchaseErrorSubscription = FlutterInappPurchase.purchaseError.listen((purchaseError) {
print('purchase-error: $purchaseError');
});
}
void _requestPurchase(IAPItem item) {
FlutterInappPurchase.instance.requestPurchase(item.productId);
}
Future _getProduct() async {
List<IAPItem> items = await FlutterInappPurchase.instance.getProducts(_productLists);
for (var item in items) {
print('${item.toString()}');
this._items.add(item);
}
setState(() {
this._items = items;
this._purchases = [];
});
}
Future _getPurchases() async {
List<PurchasedItem> items =
await FlutterInappPurchase.instance.getAvailablePurchases();
for (var item in items) {
print('${item.toString()}');
this._purchases.add(item);
}
setState(() {
this._items = [];
this._purchases = items;
});
}
Future _getPurchaseHistory() async {
List<PurchasedItem> items = await FlutterInappPurchase.instance.getPurchaseHistory();
for (var item in items) {
print('${item.toString()}');
this._purchases.add(item);
}
setState(() {
this._items = [];
this._purchases = items;
});
}
List<Widget> _renderInApps() {
List<Widget> widgets = this
._items
.map((item) => Container(
margin: EdgeInsets.symmetric(vertical: 10.0),
child: Container(
child: Column(
children: <Widget>[
Container(
margin: EdgeInsets.only(bottom: 5.0),
child: Text(
item.toString(),
style: TextStyle(
fontSize: 18.0,
color: Colors.black,
),
),
),
FlatButton(
color: Colors.orange,
onPressed: () {
print("---------- Buy Item Button Pressed");
this._requestPurchase(item);
},
child: Row(
children: <Widget>[
Expanded(
child: Container(
height: 48.0,
alignment: Alignment(-1.0, 0.0),
child: Text('Buy Item'),
),
),
],
),
),
],
),
),
))
.toList();
return widgets;
}
List<Widget> _renderPurchases() {
List<Widget> widgets = this
._purchases
.map((item) => Container(
margin: EdgeInsets.symmetric(vertical: 10.0),
child: Container(
child: Column(
children: <Widget>[
Container(
margin: EdgeInsets.only(bottom: 5.0),
child: Text(
item.toString(),
style: TextStyle(
fontSize: 18.0,
color: Colors.black,
),
),
)
],
),
),
))
.toList();
return widgets;
}
@override
Widget build(BuildContext context) {
double screenWidth = MediaQuery.of(context).size.width-20;
double buttonWidth=(screenWidth/3)-20;
return Container(
padding: EdgeInsets.all(10.0),
child: ListView(
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
Container(
child: Text(
'Running on: $_platformVersion\n',
style: TextStyle(fontSize: 18.0),
),
),
Column(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Container(
width: buttonWidth,
height: 60.0,
margin: EdgeInsets.all(7.0),
child: FlatButton(
color: Colors.amber,
padding: EdgeInsets.all(0.0),
onPressed: () async {
print("---------- Connect Billing Button Pressed");
await FlutterInappPurchase.instance.initConnection;
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment(0.0, 0.0),
child: Text(
'Connect Billing',
style: TextStyle(
fontSize: 16.0,
),
),
),
),
),
Container(
width: buttonWidth,
height: 60.0,
margin: EdgeInsets.all(7.0),
child: FlatButton(
color: Colors.amber,
padding: EdgeInsets.all(0.0),
onPressed: () async {
print("---------- End Connection Button Pressed");
await FlutterInappPurchase.instance.endConnection;
_purchaseUpdatedSubscription.cancel();
_purchaseUpdatedSubscription = null;
_purchaseErrorSubscription.cancel();
_purchaseErrorSubscription = null;
setState(() {
this._items = [];
this._purchases = [];
});
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment(0.0, 0.0),
child: Text(
'End Connection',
style: TextStyle(
fontSize: 16.0,
),
),
),
),
),
],
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Container(
width: buttonWidth,
height: 60.0,
margin: EdgeInsets.all(7.0),
child: FlatButton(
color: Colors.green,
padding: EdgeInsets.all(0.0),
onPressed: () {
print("---------- Get Items Button Pressed");
this._getProduct();
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment(0.0, 0.0),
child: Text(
'Get Items',
style: TextStyle(
fontSize: 16.0,
),
),
),
)),
Container(
width: buttonWidth,
height: 60.0,
margin: EdgeInsets.all(7.0),
child: FlatButton(
color: Colors.green,
padding: EdgeInsets.all(0.0),
onPressed: () {
print(
"---------- Get Purchases Button Pressed");
this._getPurchases();
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment(0.0, 0.0),
child: Text(
'Get Purchases',
style: TextStyle(
fontSize: 16.0,
),
),
),
)),
Container(
width: buttonWidth,
height: 60.0,
margin: EdgeInsets.all(7.0),
child: FlatButton(
color: Colors.green,
padding: EdgeInsets.all(0.0),
onPressed: () {
print(
"---------- Get Purchase History Button Pressed");
this._getPurchaseHistory();
},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20.0),
alignment: Alignment(0.0, 0.0),
child: Text(
'Get Purchase History',
style: TextStyle(
fontSize: 16.0,
),
),
),
)),
]),
],
),
Column(
children: this._renderInApps(),
),
Column(
children: this._renderPurchases(),
),
],
),
],
),
);
}
}