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vegaro/main.dart

Created Sep 19, 2019
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Using PurchaserInfoUpdateListener
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:purchases_flutter/purchases_flutter.dart';
void main() {
runApp(MaterialApp(
title: 'RevenueCat Sample',
home: InitialScreen(),
));
}
class InitialScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() => _MyAppState();
}
class _MyAppState extends State<InitialScreen> {
PurchaserInfo _purchaserInfo;
Map<String, Entitlement> _entitlements;
@override
void dispose() {
Purchases.removePurchaserInfoUpdateListener(onUpdatedPurchaserInfo);
super.dispose();
}
@override
void initState() {
super.initState();
initPlatformState();
}
void onUpdatedPurchaserInfo(PurchaserInfo purchaserInfo) {
setState(() {
_purchaserInfo = purchaserInfo;
});
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> initPlatformState() async {
Purchases.setDebugLogsEnabled(true);
Purchases.addPurchaserInfoUpdateListener(onUpdatedPurchaserInfo);
await Purchases.setup("api_key");
Map<String, Entitlement> entitlements = await Purchases.getEntitlements();
// 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(() {
_entitlements = entitlements;
});
}
@override
Widget build(BuildContext context) {
if (_purchaserInfo == null) {
return Scaffold(
appBar: AppBar(title: Text("RevenueCat Sample App")),
body: Center(
child: Text("Loading..."),
),
);
} else {
var isPro = _purchaserInfo.entitlements.active.containsKey("pro_cat");
if (isPro) {
return CatsScreen();
} else {
return UpsellScreen(
entitlements: _entitlements,
);
}
}
}
}
class UpsellScreen extends StatelessWidget {
Map<String, Entitlement> entitlements;
UpsellScreen({Key key, @required this.entitlements}) : super(key: key);
@override
Widget build(BuildContext context) {
if (entitlements != null) {
final pro = entitlements["pro_cat"];
if (pro != null) {
final monthly = pro.offerings["monthly_cats"];
final annual = pro.offerings["annual_cats"];
if (monthly != null && annual != null) {
return Scaffold(
appBar: AppBar(title: Text("Upsell Screen")),
body: Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
PurchaseButton(product: monthly),
PurchaseButton(product: annual)
],
)));
}
}
}
return Scaffold(
appBar: AppBar(title: Text("Upsell Screen")),
body: Center(
child: Text("Loading..."),
));
}
}
class PurchaseButton extends StatelessWidget {
final Product product;
PurchaseButton({Key key, @required this.product}) : super(key: key);
@override
Widget build(BuildContext context) {
return RaisedButton(
onPressed: () async {
try {
await Purchases.makePurchase(product.identifier);
} on PlatformException catch (e) {
if ((e.details as Map)["userCancelled"]) {
print("User cancelled");
}
}
},
child: Text("Buy - (${product.priceString})"),
);
}
}
class CatsScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("Cats Screen")),
body: Center(
child: Text("User is pro"),
));
}
}
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