├── .gitignore ├── .idea ├── codeStyles │ └── Project.xml ├── misc.xml ├── runConfigurations.xml └── vcs.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── demo │ │ └── iap │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── demo │ │ │ └── iap │ │ │ ├── IAPHelper.java │ │ │ ├── MainActivity.java │ │ │ └── Security.java │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ ├── coins.png │ │ ├── crown.png │ │ ├── get_coin.png │ │ ├── ic_launcher_background.xml │ │ ├── necklace.png │ │ └── ring.png │ │ ├── layout │ │ └── activity_main.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── demo │ └── iap │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── in-app.png └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | .DS_Store 2 | .externalNativeBuild 3 | .cxx 4 | 5 | # Built application files 6 | *.apk 7 | *.ap_ 8 | 9 | # Files for the ART/Dalvik VM 10 | *.dex 11 | 12 | # Java class files 13 | *.class 14 | 15 | # Generated files 16 | bin/ 17 | gen/ 18 | out/ 19 | 20 | # Gradle files 21 | .gradle/ 22 | build/ 23 | 24 | # Local configuration file (sdk path, etc) 25 | local.properties 26 | 27 | # Proguard folder generated by Eclipse 28 | proguard/ 29 | 30 | # Log Files 31 | *.log 32 | 33 | # Android Studio Navigation editor temp files 34 | .navigation/ 35 | 36 | # Android Studio captures folder 37 | captures/ 38 | 39 | # IntelliJ 40 | *.iml 41 | .idea/workspace.xml 42 | .idea/tasks.xml 43 | .idea/gradle.xml 44 | .idea/assetWizardSettings.xml 45 | .idea/dictionaries 46 | .idea/libraries 47 | .idea/caches 48 | .idea/modules.xml 49 | .idea/navEditor.xml -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 7 | 8 | 9 |
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101 | 102 | 103 | 104 | .* 105 | 106 | .* 107 | 108 | 109 | BY_NAME 110 | 111 |
112 | 113 | 114 | 115 | 116 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # InAppPurchaseDemo 2 | In-app purchasing means buying digital goods and services within the app. What does that mean for developers? 3 | It means another great way to make money. 4 | 5 | Google Play Billing allows you to sell items and additional features, or to remove ads. 6 | Google Play handles the checkout details so your app never has to process financial transactions and user gets a familiar, 7 | reliable, and secure experience. 8 | 9 | This demo Android app demonstrates implementation of in-app purchasing with google library for one-time products (no subs). 10 | 11 | You can read more about it here : https://medium.com/@surabhichoudhary/in-app-purchasing-with-google-play-billing-library-6a72e289a78e 12 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 29 5 | buildToolsVersion "29.0.2" 6 | defaultConfig { 7 | applicationId "com.demo.iap" 8 | minSdkVersion 19 9 | targetSdkVersion 29 10 | versionCode 1 11 | versionName "1.0" 12 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | 21 | compileOptions { 22 | sourceCompatibility JavaVersion.VERSION_1_8 23 | targetCompatibility JavaVersion.VERSION_1_8 24 | } 25 | } 26 | 27 | dependencies { 28 | implementation fileTree(dir: 'libs', include: ['*.jar']) 29 | implementation 'androidx.appcompat:appcompat:1.1.0' 30 | implementation 'androidx.constraintlayout:constraintlayout:1.1.3' 31 | implementation 'com.android.billingclient:billing:2.1.0' 32 | implementation 'com.jakewharton:butterknife:10.2.1' 33 | annotationProcessor 'com.jakewharton:butterknife-compiler:10.2.1' 34 | testImplementation 'junit:junit:4.12' 35 | androidTestImplementation 'androidx.test:runner:1.2.0' 36 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' 37 | } 38 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/demo/iap/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.demo.iap; 2 | 3 | import android.content.Context; 4 | 5 | import androidx.test.platform.app.InstrumentationRegistry; 6 | import androidx.test.ext.junit.runners.AndroidJUnit4; 7 | 8 | import org.junit.Test; 9 | import org.junit.runner.RunWith; 10 | 11 | import static org.junit.Assert.*; 12 | 13 | /** 14 | * Instrumented test, which will execute on an Android device. 15 | * 16 | * @see Testing documentation 17 | */ 18 | @RunWith(AndroidJUnit4.class) 19 | public class ExampleInstrumentedTest { 20 | @Test 21 | public void useAppContext() { 22 | // Context of the app under test. 23 | Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext(); 24 | 25 | assertEquals("com.demo.iap", appContext.getPackageName()); 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 6 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/java/com/demo/iap/IAPHelper.java: -------------------------------------------------------------------------------- 1 | package com.demo.iap; 2 | 3 | import android.app.Activity; 4 | import android.content.Context; 5 | import android.util.Log; 6 | 7 | import com.android.billingclient.api.AcknowledgePurchaseParams; 8 | import com.android.billingclient.api.AcknowledgePurchaseResponseListener; 9 | import com.android.billingclient.api.BillingClient; 10 | import com.android.billingclient.api.BillingClientStateListener; 11 | import com.android.billingclient.api.BillingFlowParams; 12 | import com.android.billingclient.api.BillingResult; 13 | import com.android.billingclient.api.ConsumeParams; 14 | import com.android.billingclient.api.ConsumeResponseListener; 15 | import com.android.billingclient.api.Purchase; 16 | import com.android.billingclient.api.PurchasesUpdatedListener; 17 | import com.android.billingclient.api.SkuDetails; 18 | import com.android.billingclient.api.SkuDetailsParams; 19 | import com.android.billingclient.api.SkuDetailsResponseListener; 20 | 21 | import java.util.HashMap; 22 | import java.util.List; 23 | 24 | 25 | public class IAPHelper { 26 | 27 | private String TAG = IAPHelper.class.getSimpleName(); 28 | 29 | private Context context; 30 | private BillingClient mBillingClient; 31 | private IAPHelperListener IAPHelperListener; 32 | private List skuList; 33 | 34 | /** 35 | * To instantiate the object 36 | * @param context It will be used to get an application context to bind to the in-app billing service. 37 | * @param IAPHelperListener Your listener to get the response for your query. 38 | * @param skuList 39 | */ 40 | public IAPHelper(Context context, IAPHelperListener IAPHelperListener, List skuList) { 41 | this.context = context; 42 | this.IAPHelperListener = IAPHelperListener; 43 | this.skuList = skuList; 44 | this.mBillingClient = BillingClient.newBuilder(context) 45 | .enablePendingPurchases() 46 | .setListener(getPurchaseUpdatedListener()) 47 | .build(); 48 | if (!mBillingClient.isReady()) { 49 | Log.d(TAG, "BillingClient: Start connection..."); 50 | startConnection(); 51 | } 52 | } 53 | 54 | /** 55 | * To establish the connection with play library 56 | * It will be used to notify that setup is complete and the billing 57 | * client is ready. You can query whatever you want. 58 | */ 59 | private void startConnection() { 60 | mBillingClient.startConnection(new BillingClientStateListener() { 61 | @Override 62 | public void onBillingSetupFinished(BillingResult billingResult) { 63 | int billingResponseCode = billingResult.getResponseCode(); 64 | Log.d(TAG, "onBillingSetupFinished: " + billingResult.getResponseCode()); 65 | if (billingResponseCode == BillingClient.BillingResponseCode.OK) { 66 | getPurchasedItems(); 67 | getSKUDetails(skuList); 68 | } 69 | } 70 | 71 | @Override 72 | public void onBillingServiceDisconnected() { 73 | Log.d(TAG, "onBillingServiceDisconnected: "); 74 | } 75 | }); 76 | } 77 | 78 | /** 79 | * Get purchases details for all the items bought within your app. 80 | */ 81 | public void getPurchasedItems() { 82 | Purchase.PurchasesResult purchasesResult = mBillingClient.queryPurchases(BillingClient.SkuType.INAPP); 83 | if (IAPHelperListener != null) 84 | IAPHelperListener.onPurchasehistoryResponse(purchasesResult.getPurchasesList()); 85 | } 86 | 87 | /** 88 | * Perform a network query to get SKU details and return the result asynchronously. 89 | */ 90 | public void getSKUDetails(List skuList) { 91 | final HashMap skuDetailsHashMap = new HashMap<>(); 92 | SkuDetailsParams skuParams = SkuDetailsParams.newBuilder().setType(BillingClient.SkuType.INAPP).setSkusList(skuList).build(); 93 | mBillingClient.querySkuDetailsAsync(skuParams, new SkuDetailsResponseListener() { 94 | @Override 95 | public void onSkuDetailsResponse(BillingResult billingResult, List skuDetailsList) { 96 | if (billingResult.getResponseCode() == BillingClient.BillingResponseCode.OK && skuDetailsList != null) { 97 | for (SkuDetails skuDetails : skuDetailsList) { 98 | skuDetailsHashMap.put(skuDetails.getSku(), skuDetails); 99 | } 100 | if (IAPHelperListener != null) 101 | IAPHelperListener.onSkuListResponse(skuDetailsHashMap); 102 | } 103 | } 104 | }); 105 | } 106 | 107 | /** 108 | * Initiate the billing flow for an in-app purchase or subscription. 109 | * 110 | * @param skuDetails skudetails of the product to be purchased 111 | * Developer console. 112 | */ 113 | public void launchBillingFLow(final SkuDetails skuDetails) { 114 | if(mBillingClient.isReady()){ 115 | BillingFlowParams mBillingFlowParams = BillingFlowParams.newBuilder() 116 | .setSkuDetails(skuDetails) 117 | .build(); 118 | mBillingClient.launchBillingFlow((Activity) context, mBillingFlowParams); 119 | } 120 | } 121 | 122 | /** 123 | * Your listener to get the response for purchase updates which happen when, the user buys 124 | * something within the app or by initiating a purchase from Google Play Store. 125 | */ 126 | private PurchasesUpdatedListener getPurchaseUpdatedListener() { 127 | return (billingResult, purchases) -> { 128 | int responseCode = billingResult.getResponseCode(); 129 | if (responseCode == BillingClient.BillingResponseCode.OK && purchases != null) { 130 | //here when purchase completed 131 | for (Purchase purchase : purchases) { 132 | //I have named sku in such a way that I get sku name as "type_name" for ex: "nc_ring" 133 | //For non consumable I will acknowledge purchase 134 | //For consumable I will consume purchase 135 | String type = purchase.getSku().split("_")[0]; 136 | if(type.equals("nc")) 137 | acknowledgePurchase(purchase); 138 | else 139 | consumePurchase(purchase); 140 | } 141 | } else if (responseCode == BillingClient.BillingResponseCode.USER_CANCELED) { 142 | // Handle an error caused by a user cancelling the purchase flow. 143 | Log.d(TAG, "user cancelled"); 144 | } else if (responseCode == BillingClient.BillingResponseCode.SERVICE_DISCONNECTED) { 145 | Log.d(TAG , "service disconnected"); 146 | startConnection(); 147 | } 148 | }; 149 | } 150 | 151 | public void acknowledgePurchase(Purchase purchase) { 152 | if (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED 153 | && isSignatureValid(purchase)) { 154 | 155 | //This is for Consumable product 156 | AcknowledgePurchaseParams acknowledgePurchaseParams = AcknowledgePurchaseParams.newBuilder() 157 | .setPurchaseToken(purchase.getPurchaseToken()) 158 | .build(); 159 | mBillingClient.acknowledgePurchase(acknowledgePurchaseParams, new AcknowledgePurchaseResponseListener() { 160 | @Override 161 | public void onAcknowledgePurchaseResponse(BillingResult billingResult) { 162 | Log.d("purchase", "Purchase Acknowledged"); 163 | } 164 | }); 165 | 166 | if (IAPHelperListener != null) 167 | IAPHelperListener.onPurchaseCompleted(purchase); 168 | } 169 | } 170 | 171 | public void consumePurchase(Purchase purchase) { 172 | if (purchase.getPurchaseState() == Purchase.PurchaseState.PURCHASED 173 | && isSignatureValid(purchase)) { 174 | 175 | //This is for Consumable product 176 | ConsumeParams consumeParams = ConsumeParams.newBuilder() 177 | .setPurchaseToken(purchase.getPurchaseToken()) 178 | .build(); 179 | mBillingClient.consumeAsync(consumeParams, new ConsumeResponseListener() { 180 | @Override 181 | public void onConsumeResponse(BillingResult billingResult, String s) { 182 | Log.d("purchase", "Purchase Consumed"); 183 | } 184 | }); 185 | 186 | if (IAPHelperListener != null) 187 | IAPHelperListener.onPurchaseCompleted(purchase); 188 | } 189 | } 190 | 191 | private boolean isSignatureValid(Purchase purchase) { 192 | return Security.verifyPurchase(Security.BASE_64_ENCODED_PUBLIC_KEY, purchase.getOriginalJson(), purchase.getSignature()); 193 | } 194 | 195 | /** 196 | * Call this method once you are done with this BillingClient reference. 197 | */ 198 | public void endConnection() { 199 | if (mBillingClient != null && mBillingClient.isReady()) { 200 | mBillingClient.endConnection(); 201 | mBillingClient = null; 202 | } 203 | } 204 | 205 | /** 206 | * Listener interface for handling the various responses of the Purchase helper util 207 | */ 208 | public interface IAPHelperListener { 209 | void onSkuListResponse(HashMap skuDetailsHashMap); 210 | void onPurchasehistoryResponse(List purchasedItem); 211 | void onPurchaseCompleted(Purchase purchase); 212 | } 213 | 214 | 215 | } -------------------------------------------------------------------------------- /app/src/main/java/com/demo/iap/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.demo.iap; 2 | 3 | import androidx.appcompat.app.AppCompatActivity; 4 | 5 | import android.Manifest; 6 | import android.content.SharedPreferences; 7 | import android.os.Bundle; 8 | import android.util.Log; 9 | import android.view.View; 10 | import android.widget.TextView; 11 | import android.widget.Toast; 12 | 13 | import com.android.billingclient.api.BillingClient; 14 | import com.android.billingclient.api.ConsumeParams; 15 | import com.android.billingclient.api.Purchase; 16 | import com.android.billingclient.api.SkuDetails; 17 | 18 | import java.util.ArrayList; 19 | import java.util.Arrays; 20 | import java.util.HashMap; 21 | import java.util.List; 22 | import java.util.Locale; 23 | 24 | import butterknife.BindView; 25 | import butterknife.ButterKnife; 26 | import butterknife.OnClick; 27 | 28 | public class MainActivity extends AppCompatActivity implements IAPHelper.IAPHelperListener { 29 | 30 | private String TAG = MainActivity.class.getSimpleName(); 31 | 32 | 33 | IAPHelper iapHelper; 34 | HashMap skuDetailsHashMap = new HashMap<>(); 35 | //For non_consumable tag "nc" is used at start 36 | final String RING = "nc_ring"; 37 | final String NECKLACE = "nc_necklace"; 38 | final String CROWN = "nc_crown"; 39 | final String COIN = "coin"; 40 | final String TEST = "android.test.purchased"; //This id can be used for testing purpose 41 | private List skuList = Arrays.asList(COIN, RING, NECKLACE, CROWN, TEST); 42 | 43 | private SharedPreferences pref; 44 | private String SETTINGS = "saved_settings"; 45 | private String SETTINGS_COINS = "saved_coins"; 46 | 47 | @BindView(R.id.tvTotalCoinsNum) 48 | TextView tvtotalCoin; 49 | 50 | private Integer totalCoins; 51 | 52 | @Override 53 | protected void onCreate(Bundle savedInstanceState) { 54 | super.onCreate(savedInstanceState); 55 | setContentView(R.layout.activity_main); 56 | ButterKnife.bind(this); 57 | 58 | iapHelper = new IAPHelper(this, this, skuList); 59 | 60 | //Get previous coins from shared pref data 61 | pref = getSharedPreferences(SETTINGS, 0); 62 | totalCoins = pref.getInt(SETTINGS_COINS, 0); 63 | tvtotalCoin.setText(String.format(Locale.getDefault(), "%d", totalCoins)); 64 | } 65 | 66 | @OnClick(R.id.llBuyCoin) 67 | public void buyCoin(){ 68 | launch(TEST); 69 | } 70 | 71 | @OnClick(R.id.llUnlockRing) 72 | public void unlockRing(){ 73 | launch(RING); 74 | } 75 | 76 | @OnClick(R.id.llUnlockNecklace) 77 | public void unlockNecklace(){ 78 | launch(NECKLACE); 79 | } 80 | 81 | @OnClick(R.id.llUnlockCrown) 82 | public void unlockCrown(){ 83 | launch(CROWN); 84 | } 85 | 86 | private void launch(String sku){ 87 | if(!skuDetailsHashMap.isEmpty()) 88 | iapHelper.launchBillingFLow(skuDetailsHashMap.get(sku)); 89 | } 90 | 91 | 92 | @Override 93 | public void onSkuListResponse(HashMap skuDetails) { 94 | skuDetailsHashMap = skuDetails; 95 | } 96 | 97 | @Override 98 | public void onPurchasehistoryResponse(List purchasedItems) { 99 | if (purchasedItems != null) { 100 | for (Purchase purchase : purchasedItems) { 101 | //Update UI and backend according to purchased items if required 102 | // Like in this project I am updating UI for purchased items 103 | String sku = purchase.getSku(); 104 | switch (sku) { 105 | case RING: 106 | findViewById(R.id.tvRingBought).setVisibility(View.VISIBLE); 107 | break; 108 | case NECKLACE: 109 | findViewById(R.id.tvNecklaceBought).setVisibility(View.VISIBLE); 110 | break; 111 | case CROWN: 112 | findViewById(R.id.tvCrownBought).setVisibility(View.VISIBLE); 113 | break; 114 | } 115 | } 116 | } 117 | } 118 | 119 | @Override 120 | public void onPurchaseCompleted(Purchase purchase) { 121 | Toast.makeText(getApplicationContext(), "Purchase Successful", Toast.LENGTH_SHORT).show(); 122 | updatePurchase(purchase); 123 | } 124 | 125 | private void updatePurchase(Purchase purchase){ 126 | String sku = purchase.getSku(); 127 | switch (sku) { 128 | case RING: 129 | findViewById(R.id.tvRingBought).setVisibility(View.VISIBLE); 130 | break; 131 | case NECKLACE: 132 | findViewById(R.id.tvNecklaceBought).setVisibility(View.VISIBLE); 133 | break; 134 | case CROWN: 135 | findViewById(R.id.tvCrownBought).setVisibility(View.VISIBLE); 136 | break; 137 | case TEST: 138 | totalCoins += 25; 139 | pref.edit().putInt(SETTINGS_COINS, totalCoins).apply(); 140 | tvtotalCoin.setText(String.format(Locale.getDefault(), "%d", totalCoins)); 141 | break; 142 | } 143 | } 144 | 145 | @Override 146 | protected void onDestroy() { 147 | super.onDestroy(); 148 | if (iapHelper != null) 149 | iapHelper.endConnection(); 150 | } 151 | } 152 | -------------------------------------------------------------------------------- /app/src/main/java/com/demo/iap/Security.java: -------------------------------------------------------------------------------- 1 | /* Copyright (c) 2012 Google Inc. 2 | * 3 | * Licensed under the Apache License, Version 2.0 (the "License"); 4 | * you may not use this file except in compliance with the License. 5 | * You may obtain a copy of the License at 6 | * 7 | * http://www.apache.org/licenses/LICENSE-2.0 8 | * 9 | * Unless required by applicable law or agreed to in writing, software 10 | * distributed under the License is distributed on an "AS IS" BASIS, 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | * See the License for the specific language governing permissions and 13 | * limitations under the License. 14 | */ 15 | 16 | package com.demo.iap; 17 | 18 | import android.text.TextUtils; 19 | import android.util.Base64; 20 | import android.util.Log; 21 | 22 | import com.android.billingclient.api.Purchase; 23 | 24 | import java.security.InvalidKeyException; 25 | import java.security.KeyFactory; 26 | import java.security.NoSuchAlgorithmException; 27 | import java.security.PublicKey; 28 | import java.security.Signature; 29 | import java.security.SignatureException; 30 | import java.security.spec.InvalidKeySpecException; 31 | import java.security.spec.X509EncodedKeySpec; 32 | 33 | /** 34 | * Security-related methods. For a secure implementation, all of this code 35 | * should be implemented on a server that communicates with the 36 | * application on the device. For the sake of simplicity and clarity of this 37 | * example, this code is included here and is executed on the device. If you 38 | * must verify the purchases on the phone, you should obfuscate this code to 39 | * make it harder for an attacker to replace the code with stubs that treat all 40 | * purchases as verified. 41 | */ 42 | public class Security { 43 | private static final String TAG = Security.class.getSimpleName(); 44 | 45 | private static final String KEY_FACTORY_ALGORITHM = "RSA"; 46 | private static final String SIGNATURE_ALGORITHM = "SHA1withRSA"; 47 | 48 | //This you will get from Services & API in your application console 49 | public static String BASE_64_ENCODED_PUBLIC_KEY = "your_public_key_that you_get_from_google_play_console"; 50 | 51 | /** 52 | * Verifies that the data was signed with the given signature, and returns 53 | * the verified purchase. The data is in JSON format and signed 54 | * with a private key. The data also contains the {@link Purchase.PurchaseState} 55 | * and product ID of the purchase. 56 | * @param base64PublicKey the base64-encoded public key to use for verifying. 57 | * @param signedData the signed JSON string (signed, not encrypted) 58 | * @param signature the signature for the data, signed with the private key 59 | */ 60 | public static boolean verifyPurchase(String base64PublicKey, String signedData, String signature) { 61 | if (TextUtils.isEmpty(signedData) || TextUtils.isEmpty(base64PublicKey) || 62 | TextUtils.isEmpty(signature)) { 63 | Log.e(TAG, "Purchase verification failed: missing data."); 64 | return false; 65 | } 66 | 67 | PublicKey key = Security.generatePublicKey(base64PublicKey); 68 | return Security.verify(key, signedData, signature); 69 | } 70 | 71 | /** 72 | * Generates a PublicKey instance from a string containing the 73 | * Base64-encoded public key. 74 | * 75 | * @param encodedPublicKey Base64-encoded public key 76 | * @throws IllegalArgumentException if encodedPublicKey is invalid 77 | */ 78 | private static PublicKey generatePublicKey(String encodedPublicKey) { 79 | try { 80 | byte[] decodedKey = Base64.decode(encodedPublicKey, Base64.DEFAULT); 81 | KeyFactory keyFactory = KeyFactory.getInstance(KEY_FACTORY_ALGORITHM); 82 | return keyFactory.generatePublic(new X509EncodedKeySpec(decodedKey)); 83 | } catch (NoSuchAlgorithmException e) { 84 | throw new RuntimeException(e); 85 | } catch (InvalidKeySpecException e) { 86 | Log.e(TAG, "Invalid key specification."); 87 | throw new IllegalArgumentException(e); 88 | } 89 | } 90 | 91 | /** 92 | * Verifies that the signature from the server matches the computed 93 | * signature on the data. Returns true if the data is correctly signed. 94 | * 95 | * @param publicKey public key associated with the developer account 96 | * @param signedData signed data from server 97 | * @param signature server signature 98 | * @return true if the data and signature match 99 | */ 100 | private static boolean verify(PublicKey publicKey, String signedData, String signature) { 101 | byte[] signatureBytes; 102 | try { 103 | signatureBytes = Base64.decode(signature, Base64.DEFAULT); 104 | } catch (IllegalArgumentException e) { 105 | Log.e(TAG, "Base64 decoding failed."); 106 | return false; 107 | } 108 | try { 109 | Signature sig = Signature.getInstance(SIGNATURE_ALGORITHM); 110 | sig.initVerify(publicKey); 111 | sig.update(signedData.getBytes()); 112 | if (!sig.verify(signatureBytes)) { 113 | Log.e(TAG, "Signature verification failed."); 114 | return false; 115 | } 116 | return true; 117 | } catch (NoSuchAlgorithmException e) { 118 | Log.e(TAG, "NoSuchAlgorithmException."); 119 | } catch (InvalidKeyException e) { 120 | Log.e(TAG, "Invalid key specification."); 121 | } catch (SignatureException e) { 122 | Log.e(TAG, "Signature exception."); 123 | } 124 | return false; 125 | } 126 | } 127 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/coins.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/surabhi6/InAppPurchaseDemo/5b417ee970247e825e1f56948e3d714f5c19384c/app/src/main/res/drawable/coins.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/crown.png: 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| 106 | 118 | 119 | 124 | 125 | 133 | 134 | 143 | 144 | 145 | 146 | 158 | 159 | 164 | 165 | 173 | 174 | 183 | 184 | 185 | 186 | 198 | 199 | 204 | 205 | 213 | 214 | 223 | 224 | 225 | 226 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/surabhi6/InAppPurchaseDemo/5b417ee970247e825e1f56948e3d714f5c19384c/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/surabhi6/InAppPurchaseDemo/5b417ee970247e825e1f56948e3d714f5c19384c/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #008577 4 | #00574B 5 | #D81B60 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | In-App Purchase Demo 3 | 4 | Consumable Product 5 | Non-Consumable Products 6 | Buy 25 Coins 7 | Unlocked Collection 8 | Ring 9 | Necklace 10 | Crown 11 | Bought 12 | 13 | 14 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | 13 | -------------------------------------------------------------------------------- /app/src/test/java/com/demo/iap/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.demo.iap; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | repositories { 5 | google() 6 | jcenter() 7 | 8 | } 9 | dependencies { 10 | classpath 'com.android.tools.build:gradle:3.5.0' 11 | 12 | // NOTE: Do not place your application dependencies here; they belong 13 | // in the individual module build.gradle files 14 | } 15 | } 16 | 17 | allprojects { 18 | repositories { 19 | google() 20 | jcenter() 21 | 22 | } 23 | } 24 | 25 | task clean(type: Delete) { 26 | delete rootProject.buildDir 27 | } 28 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app's APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Automatically convert third-party libraries to use AndroidX 19 | android.enableJetifier=true 20 | 21 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/surabhi6/InAppPurchaseDemo/5b417ee970247e825e1f56948e3d714f5c19384c/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Wed Mar 25 10:26:28 IST 2020 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /in-app.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/surabhi6/InAppPurchaseDemo/5b417ee970247e825e1f56948e3d714f5c19384c/in-app.png -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | rootProject.name='IAP' 3 | --------------------------------------------------------------------------------