Flutter In App Purchases paying for App features and Unlock them | Non Consumable.

-





  Flutter Tutorials

Non-consumables are purchased once by users. Services that do not expire or decrease with use are usually implemented as non-consumables, such as removing ads from App for users.

In this tutorial, we will cover how to Implement Non-Consumables using the in_app_purchase plugin in your flutter App.


1- Add these permissions to

android/app/src/main/AndroidManifest.xml

1
2
<uses-permission android:name="com.android.vending.BILLING" />   
<uses-permission android:name="android.permission.INTERNET"/>

2- Add this line in the dependencies block of your project's build.gradle.

android/app/build.gradle

1
2
3
4
5
dependencies {
 
implementation 'com.android.billingclient:billing:3.0.2'
 
}

3- Make sure you are using your own product ID



4- Add this plugin to your package’s pubspec.yaml file:

1
in_app_purchase: ^0.5.2

This is our file: main.dart

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
import 'dart:async';
 
import 'package:flutter/material.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'homescreen.dart';
import 'package:provider/provider.dart';
 
import 'providermodel.dart';
 
 
void main() {
  InAppPurchaseConnection.enablePendingPurchases();
 
 
  runApp(ChangeNotifierProvider(
      create: (context) => ProviderModel(),
 
      child: MaterialApp(home: MyApp(),)));
}
 
class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}
 
class _MyAppState extends State<MyApp> {
 
 
  @override
  void initState() {
    var provider = Provider.of<ProviderModel>(context, listen: false);
provider.initialize();
    super.initState();
  }
 
 
  @override
  void dispose() {
    var provider = Provider.of<ProviderModel>(context, listen: false);
    provider.subscription.cancel();
    super.dispose();
  }
 
  @override
  Widget build(BuildContext context) {
    return HomeScreen();
  }
}

Here is our first Screen UI file where we show our pay button: homescreen.dart

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
import 'package:flutter/material.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
import 'package:provider/provider.dart';
 
import 'providermodel.dart';
 
class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}
 
class _HomeScreenState extends State<HomeScreen> {
  InAppPurchaseConnection _iap = InAppPurchaseConnection.instance;
  @override
  void initState() {
    var provider = Provider.of<ProviderModel>(context, listen: false);
    provider.verifyPurchase();
    super.initState();
  }
 
  void _buyProduct(ProductDetails prod) {
    final PurchaseParam purchaseParam = PurchaseParam(productDetails: prod);
    _iap.buyNonConsumable(purchaseParam: purchaseParam);
  }
 
 
  @override
  Widget build(BuildContext context) {
    var provider = Provider.of<ProviderModel>(context);
 
 
    return Scaffold(
      appBar: AppBar(
        title: Text("In App Purchase"),
      ),
      body: Center(
        child: Container(
          height: 500,
          width: 200,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              Container(
                child: Padding(
                  padding: const EdgeInsets.all(8.0),
                  child: Container(color: Colors.grey.withOpacity(0.2),
                    child: Row(
                      mainAxisAlignment: MainAxisAlignment.start,
                      children: [
                        Text(provider.available ? "Store is Available" : "Store is not Available",
                          style: TextStyle(fontSize: 22, color: Colors.green),),
                      ],
                    ),
                  ),
                ),
              ),
              provider.isPurchased ? Row(children: [Text("Features Unlocked"),Icon(Icons.lock_open)  ]
 
 
                ,):Row(children: [Text("Features Locked"),Icon(Icons.lock)],),
 
 
              for (var prod in provider.products)
                if (provider.hasPurchased(prod.id) != null) ...[
                  Center(
                    child: FittedBox(
                      child: Text(
                        'THANK YOU!',
                        textAlign: TextAlign.center,
                        style: TextStyle(fontSize: 60, color: Colors.black),
                      ),
                    ),
                  ),
                  Container(
                    height: 50,
                  ),
                ]else ...[
                  Container(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.start,
                      children: [
                        Text(
                          "Unlock Features pay ${prod.price}",
                          style: TextStyle(fontSize: 22, color: Colors.black54),
                          textAlign: TextAlign.center,
                        ),
                        FlatButton(
                          onPressed: () => _buyProduct(prod),
                          child: Text('Pay'),
                          color: Colors.green,
                        ),
                      ],
                    ),
                  ),
                ]
 
 
 
            ],
          ),
        ),
      ),
    );
  }
}

We are going to use provider state management so add this to your package’s pubspec.yaml file:

provider: ^4.3.1

This is our provider model class: providermodel.dart

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
import 'dart:async';
import 'dart:io';
import 'package:collection/collection.dart';
import 'package:flutter/cupertino.dart';
import 'package:in_app_purchase/in_app_purchase.dart';
 
class ProviderModel with ChangeNotifier {
  InAppPurchaseConnection _iap = InAppPurchaseConnection.instance;
  bool available = true;
  StreamSubscription subscription;
  final String myProductID = 'in_app_payment_test';
 
 
  bool _isPurchased = false;
  bool get isPurchased => _isPurchased;
  set isPurchased(bool value) {
    _isPurchased = value;
    notifyListeners();
  }
 
 
 
 
  List _purchases = [];
  List get purchases => _purchases;
  set purchases(List value) {
    _purchases = value;
    notifyListeners();
  }
 
 
  List _products = [];
  List get products => _products;
  set products(List value) {
    _products = value;
    notifyListeners();
  }
 
 
 
  void initialize() async {
    available = await _iap.isAvailable();
    if (available) {
      await _getProducts();
      await _getPastPurchases();
      verifyPurchase();
      subscription = _iap.purchaseUpdatedStream.listen((data) {
        purchases.addAll(data);
        verifyPurchase();
      });
    }
  }
 
 
  void verifyPurchase() {
    PurchaseDetails purchase = hasPurchased(myProductID);
 
    if (purchase != null && purchase.status == PurchaseStatus.purchased) {
 
      if (purchase.pendingCompletePurchase) {
        _iap.completePurchase(purchase);
        
if (purchase != null && purchase.status == PurchaseStatus.purchased) {
          isPurchased = true;
        }
      }
 
    }
  }
 
 
 PurchaseDetails hasPurchased(String productID) {
    return purchases
        .firstWhereOrNull((purchase) => purchase.productID == productID);
  }
 
 
  Future<void> _getProducts() async {
    Set<String> ids = Set.from([myProductID]);
    ProductDetailsResponse response = await _iap.queryProductDetails(ids);
    products = response.productDetails;
  }
 
 
  Future<void> _getPastPurchases() async {
    QueryPurchaseDetailsResponse response = await _iap.queryPastPurchases();
    for (PurchaseDetails purchase in response.pastPurchases) {
      if (Platform.isIOS) {
        _iap.consumePurchase(purchase);
      }
    } purchases = response.pastPurchases;
 
  }
 
 
 
}

Popular posts from this blog

In-App Purchase with null safety in Flutter 2.5.

-
Image
  toobay   Flutter Tutorials In this guide, we will explain how to Implement Consumables Non-Consumables and Subscriptions using the in_app_purchase plugin in your flutter App. 1- Add these permissions to android/app/src/main/AndroidManifest.xml <uses-permission android :name ="com.android.vending.BILLING" /> <uses-permission android :name ="android.permission.INTERNET" /> 2- Make sure you are using your own product IDs. 3- Add these to your package’s pubspec.yaml file: in_app_purchase : ^1.0.9 provider : ^6.0.1 shared_preferences : ^2.0.8 NOTE :  If you want to use in_app_purchase 2.0.0 version or above follow the below instructions. # Rename in_app_purchase_ios to in_app_purchase_storekit. # Rename InAppPurchaseIosPlatform to InAppPurchaseStoreKitPlatform. # Rename InAppPurchaseIosPlatformAddition to InAppPurchaseStoreKitPlatformAddition. This is our file: main.dart import 'package:flutter/foundation.dart' ; import 'package:flutter/material...
Read more

How to add In-App Purchase subscription in Flutter.

-
Image
How to add In-App Purchase subscription in Flutter.   toobay   Flutter Tutorials In this tutorial we will teach you how to implement subscription in your app. For this we will use the in app purchases package. In addition we will have to create a product ID for subscription in our Google Play Console which we will use in our project. 1- Add these permissions to android/app/src/main/AndroidManifest.xml 1 2 <uses-permission android:name="com.android.vending.BILLING" />    <uses-permission android:name="android.permission.INTERNET"/> 2- Add this line in the dependencies block android/app/build.gradle inside dependencies block dependencies { implementation 'com.android.billingclient:billing:3.0.2' } 3- Make sure you are using your own product ID  4- Add this to your package’s pubspec.yaml file: 1 in_app_purchase: ^0.5.2 This is our file: main.dart 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 ...
Read more

Flutter Native Ad Templates Implementation

-
Image
The native ad is that matches our website theme where we can change the color and font according to our website. Here we will implement it with templates which you can also use in your application. Add the Google Mobile Ads plugin as a dependency  to the  pubspec.yaml  file. /pubspec.yaml google_mobile_ads : ^1.0.1 AdMob app ID Add the Highlighted  lines to the  AndroidManifest.xml  file with your own  AdMob app ID. android/app/src/main/AndroidManifest.xml <manifest>     ...     <application>        ...         <meta-data             android:name = "com.google.android.gms.ads.APPLICATION_ID"             android:value = " ca-app-pub-3940256099942544~3347511713 " />     </application> </manifest> Change minSdkVersion to 19 android/app/build.gradle defaultConfig { // TODO: Specify your own uni...
Read more