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How To add OpenIAB into an app

  1. Download the latest version of OpenIAB.jar from https://github.com/onepf/OpenIAB/releases and attach it to the project. Or clone the library git clone https://github.com/onepf/OpenIAB.git and add /library as a Library Project.

  2. Map Google Play SKU ids to Yandex/Amazon/etc SKUs like this: https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L109

  3. Instantiate new OpenIabHelper and call helper.startSetup(). When setup is done call helper.queryInventory()

      helper = new OpenIabHelper(this, storeKeys);
  helper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
      public void onIabSetupFinished(IabResult result) {
          if (!result.isSuccess()) {
              complain("Problem setting up in-app billing: " + result);
              return;
          }
          Log.d(TAG, "Setup successful. Querying inventory.");
              helper.queryInventoryAsync(mGotInventoryListener);
          }
  });

https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L196

  1. Handle the results of helper.queryInventory() in an inventory listener and update UI to show what was purchased https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L215

  2. To process purchases you need to override onActivityResult() of your Activity

       @Override
   protected void onActivityResult(int requestCode, int resultCode, Intent data) {
       // Pass on the activity result to the helper for handling
       mHelper.handleActivityResult(requestCode, resultCode, data));
   }

When the user requests purchase of an item, call helper.launchPurchaseFlow() https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L286 and handle the results with the listener https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L388

  1. If the user has purchased a consumable item, call helper.consume() to exclude it from the inventory. If the item is not consumed, a store supposes it as non-consumable item and doesn't allow to purchase it one more time. Also it will be returned by helper.queryInventory() next time https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L407

  2. Specify keys for different stores like this: https://github.com/onepf/OpenIAB/blob/master/samples/trivialdrive/src/org/onepf/trivialdrive/MainActivity.java#L166

  3. Add the required permissions to the AndroidManifest.xml

    <!--all-->
<uses-permission android:name="android.permission.INTERNET"/>
<!--Google Play-->
<uses-permission android:name="com.android.vending.BILLING" />
<!--Open Store-->
<uses-permission android:name="org.onepf.openiab.permission.BILLING" />
<!--Amazon-->
<!--Amazon requires no permissions -->
<!--Samsung Apps-->
<uses-permission android:name="com.sec.android.iap.permission.BILLING" />
<!--Fortumo-->
<uses-permission android:name="android.permission.RECEIVE_SMS"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.SEND_SMS" />

  4. Edit your proguard config file

    # GOOGLE
-keep class com.android.vending.billing.**

# AMAZON
-dontwarn com.amazon.**
-keep class com.amazon.** {*;}
-keepattributes *Annotation*
-dontoptimize

# SAMSUNG
-keep class com.sec.android.iap.**

#FORTUMO
-keep class mp.** { *; }

  5. Troubleshooting: additional logging is very helpful if you trying to understand what's wrong with configuration or raise issue:

    helper.enableDebugLogging(true);

Support instructions for the stores

Google Play and Open Stores

  1. Add the corresponding billing permissions

    <uses-permission android:name="com.android.vending.BILLING" />
<uses-permission android:name="org.onepf.openiab.permission.BILLING" />

  2. Provide your public keys

    Map<String, String> storeKeys = new HashMap<String, String>();
storeKeys.put(OpenIabHelper.NAME_GOOGLE, googleBase64EncodedPublicKey);
storeKeys.put(OPEN_STORE_NAME, openStoreBase64EncodedPublicKey);
OpenIabHelper.Options options = new OpenIabHelper.Options();
options.storeKeys = storeKeys;
mHelper = new OpenIabHelper(this, options);
//or
mHelper = new OpenIabHelper(this, storeKeys);

    otherwise verify purchases on your server side.

  3. Map the SKUs if they are different for the required stores

    OpenIabHelper.mapSku(SKU_PREMIUM, OpenIabHelper.STORE_NAME, "org.onepf.trivialdrive.storename.premium");
OpenIabHelper.mapSku(SKU_GAS, OpenIabHelper.STORE_NAME, "org.onepf.trivialdrive.storename.gas");
OpenIabHelper.mapSku(SKU_INFINITE_GAS, OpenIabHelper.STORE_NAME, "org.onepf.trivialdrive.storename.infinite_gas");

  4. In the proguard configuration file

     # GOOGLE
 -keep class com.android.vending.billing.**

  5. To test .apk with Google Play please ensure

    • your .apk submitted to Google Play Developer Console
    • your .apk is signed by production key
    • versionCode in AndroidManifest.xml of your .apk equal to versionCode of .apk submitted to Developer Console

Receipt Verification on Server

  1. Create OpenIabHelper with "Skip signature verification" option and no publicKeys. If you specify no publicKeys and forget VERIFY_SKIP options IabHelper will throw

    Options opts = new OpenIabHelper.Options();
opts.verifyMode = Options.VERIFY_SKIP;
mHelper = new OpenIabHelper(context, opts);

  2. Get receipt's data and signature from Purchase object and send it to your server

    new IabHelper.OnIabPurchaseFinishedListener() {
    public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
        // … different result checks ...
        String receiptData = purchase.getOriginalJson();
        String receiptSignature = purchase.getSignature();
        String storeName = purchase.getAppstoreName();
        String urlToContent  = requestReceiptVerificationOnServer(receiptData, receiptSignature, storeName);
        // … further code ...
    }
}

Amazon

  1. In the AndroidManifest.xml declare the receiver

    <receiver android:name="com.amazon.inapp.purchasing.ResponseReceiver">
    <intent-filter>
        <action
            android:name="com.amazon.inapp.purchasing.NOTIFY"
            android:permission="com.amazon.inapp.purchasing.Permission.NOTIFY"
        />
    </intent-filter>
</receiver>

  2. Map the SKUs if required. Remember, the SKUs must be unique across your Amazon developer account.

    OpenIabHelper.mapSku(SKU_PREMIUM, OpenIabHelper.NAME_AMAZON, "org.onepf.trivialdrive.amazon.premium");
OpenIabHelper.mapSku(SKU_GAS, OpenIabHelper.NAME_AMAZON, "org.onepf.trivialdrive.amazon.gas");
OpenIabHelper.mapSku(SKU_INFINITE_GAS, OpenIabHelper.NAME_AMAZON, "org.onepf.trivialdrive.amazon.infinite_gas");

  3. In the proguard config file add

     # AMAZON
-dontwarn com.amazon.**
-keep class com.amazon.** {*;}
-keepattributes *Annotation*
-dontoptimize

  4. If OpenIAB added as library project, Amazon SDK in-app-purchasing-1.0.3.jar should exist in build-path (/libs)

  5. To test .apk with Amazon SDK Tester some steps are needed:

    • Download and install Amazon SDK Tester from Amazon website
    • Download JSON with in-app products from Amazon Developer Console and put JSON with in-app products to /mnt/sdcard
    • Install your .apk with special option to help OpenIAB choose Amazon protocol
    # install for Amazon SDK Tester:
adb install -i com.amazon.venezia /path/to/YourApp.apk

Samsung Apps

  1. In the AndroidManifest.xml add the corresponding billing permission

     <uses-permission android:name="com.sec.android.iap.permission.BILLING" />

  2. Map the SKUs if required. Remember, Samsung Apps describes an item it terms of Item Group ID and Item ID.

    //format "group_id/item_id"
OpenIabHelper.mapSku(SKU_PREMIUM, OpenIabHelper.NAME_SAMSUNG, "100000100696/000001003746");
OpenIabHelper.mapSku(SKU_GAS, OpenIabHelper.NAME_SAMSUNG, "100000100696/000001003744");
OpenIabHelper.mapSku(SKU_INFINITE_GAS, OpenIabHelper.NAME_SAMSUNG, "100000100696/000001003747");

  3. Instantiate new OpenIabHelper using an Activity instance. Activity context is required to call startActivityForResult() for SamsungAccount Activity.

  4. In the proguard config file add

    # SAMSUNG
-keep class com.sec.android.iap.**

  5. To test your .apk with SamsungApps following steps are needed:

    • Ensure SamsungApps is installed on your device
    • Ensure Samsung IAP Service is installed on your device
    • Install your .apk with special option to help OpenIAB choose SamsunApps
    # install for SamsungApps:
adb install -i com.sec.android.app.samsungapps /path/to/YourApp.apk

Nokia IAP

  1. In the AndroidManifest.xml add the corresponding billing permission

    <uses-permission android:name="com.nokia.payment.BILLING"/>

  2. Map the SKUs if required.

    OpenIabHelper.mapSku(SKU_PREMIUM, OpenIabHelper.NAME_NOKIA, "1023608");
OpenIabHelper.mapSku(SKU_GAS, OpenIabHelper.NAME_NOKIA, "1023609");
OpenIabHelper.mapSku(SKU_INFINITE_GAS, OpenIabHelper.NAME_NOKIA, "1023610");

  3. In the proguard configuration file

    # NOKIA
-keep class com.nokia.payment.iap.aidl.**

  4. To test your .apk with Nokia Store Install your .apk with special option to help OpenIAB choose Nokia protocol

    # install for Nokia Store:
adb install -i com.nokia.payment.iapenabler /path/to/YourApp.apk

Fortumo: carrier billing and NOOK

Before start to work with OpenIAB library

Create a Fortumo account and add a required number of NOOK and Android services. One service corresponds to one price, e.g. for 3 in-apps with different prices you should create 3 different services.

OpenIAB setup

  1. Make sure that FortumoInApp-android-9.1.2-o.jar is attached to the project.

  2. In the AndroidManifest.xml add the following permissions

    <uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />

    and declare the Fortumo SDK objects

    <!-- Declare these objects, this is part of Fortumo SDK,
    and should not be called directly -->
 <receiver android:name="mp.MpSMSReceiver">
       <intent-filter>
           <action android:name="android.provider.Telephony.SMS_RECEIVED"/>
       </intent-filter>
   </receiver>
   <service android:name="mp.MpService"/>
   <service android:name="mp.StatusUpdateService"/>
   <activity android:name="mp.MpActivity"
             android:theme="@android:style/Theme.Translucent.NoTitleBar"
             android:configChanges="orientation|keyboardHidden|screenSize"/>

  3. In the code setup an Options object

    OpenIabHelper.Options options = new OpenIabHelper.Options();
//set supportFortumo flag to true
options.supportFortumo = true;
//or
List<Appstore> storeList = new ArrayList<Appstore>();
storeList.add(new FortumoStore(this));
//by the way, you can add other stores object to the list
options.availableStores = storeList;
mHelper = new OpenIabHelper(this, options);

  4. Add inapps_products.xml (in-app products description in terms similar to Google Play) and fortumo_inapps_details.xml (data about your Fortumo services, need to be copy-pasted from Dashboard.) files to the assets folder. You can find a sample here. Example of inapp-products.xml

    <inapp-products>
    <!--Zero or more repetitions:-->
    <items>
        <!--Zero or more repetitions:-->
        <item id="sku_gas"
              publish-state="published"> <!-- id: the same format as Google SKU, required; published: "published" or "unpublushed", required by the xsd, but is not actually used it the current implementation-->
            <summary><!--encapsulates all elements related to description, required-->
                <summary-base><!--default strings elements, required-->
                    <title>1/4 of gas tank</title> <!-- default title, required-->
                    <description>Some gas to go further</description> <!-- default description, required-->
                </summary-base>
                <!--Zero or more repetitions:-->
                <summary-localization locale="ru_RU"> <!-- locale: [a-z]_[A-Z], required-->
                    <title>Четверть бака бензина</title> <!-- required -->
                    <description>Немного топлива, чтобы проехать еще</description> <!-- required -->
                </summary-localization>
                <summary-localization locale="en_US">
                    <title>1/4 of gas tank</title>
                    <description>Some gas to go further</description>
                </summary-localization>
            </summary>
            <price autofill="true"> <!-- autofill: true or false, required by the xsd, but is not used in the current implementation-->
                <price-base>1.00</price-base> <!-- default price, required-->
                <!--Zero or more repetitions:-->
                <price-local country="RU"> <!-- country: [A-Z][A_Z], required-->
                    30.00</price-local>
                <price-local country="EN">1.00</price-local>
            </price>
        </item>
       ...
    </items>
</inapp-products>

    Example of fortumo_inapps_details.xml.

    <fortumo-products>
    <!--
    <product                    // mapping for particular fortumo service
        id="sku_gas"            // SKU with rules same to Appstore SKU
        service-id="61730610ade8f2f754bb3bd4b0c1fd0e"           // Fortumo serviceId need to be copy-pasted from Dashboard
        service-inapp-secret="cbc0da3763e59eee2d5a523fe5761346" // Fortumo inapp-secret need to be copy-pasted from Dashboard
        nook-service-id="61730610ade8f2f754bb3bd4b0c1fd0e"           // Fortumo NOOK serviceId need to be copy-pasted from Dashboard
        nook-service-inapp-secret="cbc0da3763e59eee2d5a523fe5761346" // Fortumo NOOK inapp-secret need to be copy-pasted from Dashboard
        consumable="true"/>     // consumable or not - currently is necessary parameter as wellas for Amazon
    -->
    <product
            id="sku_gas"
            service-id="61730610ade8f2f754bb3bd4b0c1fd0e"
            service-inapp-secret="cbc0da3763e59eee2d5a523fe5761346"
            nook-service-id="f2ca9394861085d34158e09cedd87738"
            nook-service-inapp-secret="78629d599dac532856cc2e90dd69e772"
            consumable="true"/>
    <product
            id="sku_premium"
            service-id="61730610ade8f2f754bb3bd4b0c1fd0e"
            service-inapp-secret="cbc0da3763e59eee2d5a523fe5761346"
            nook-service-id="f2ca9394861085d34158e09cedd87738"
            nook-service-inapp-secret="78629d599dac532856cc2e90dd69e772"
            consumable="false"/>
</fortumo-products>

    Both files can be created using AppDF Editor.

  5. In the proguard config file add

     # FORTUMO
 -keep class mp.** { *; }

Unity Plugin

There is also Unity engine plugin that will simplify integration for C#/JavaScript developers. No need to write any java code.

OpenIAB - Open In-App Billing

Uploading Android apps to all the existing Android appstores is a painful process and AppDF project was designed to make it easier. But what is even more difficult for the developers is supporting different in-purchase APIs of different appstores. There are five different In-App Purchase APIs already and this number is increasing. We are going to create an open source library that will wrap appstore in-app purchase APIs of all the stores and provide an easy way for the developers to develop their apps/games in a way that one APK will work in all the stores and automatically use right in-app purchase API under each store. Plus we are going to develop an open in-app billing API that stores could implement to support all the built APK files using this library.

How OpenIAB Works

  1. An Android app developer integrates OpenIAB library in his/her Android code
  2. An Android app developer implements in-app purchases using OpenIAB API (which is very close to Google Play IAB API, just few changes in source code will be needed)
  3. OpenIAB Lib detects which appstore installed the app
  4. OpenIAB Lib redirects in-app purchase calls to the corresponding appstore IAB API (OpenIAB Lib wrapps IAB APIs of severall apstores)
  5. All In-App Billing logic is handled by the corresponding appstore, OpenIAB has no code to process in-app purchases and has no UI, it just wrapps In-App Billing APIs of different stores in one library

Current Status

OpenIAB SDK is used in production by wide variety of application and games. OpenIAB packages are available for Android apps and games based on Unity3d or Marmalade SDK. OpenIAB protocol is implemented by several Appstores.

We have some samples that works in any Appstore in our samples folder. To find differences between TrivialDrive provided by Google and TrivialDrive with OpenIAB, please check our sample. It demonstrates what changes need to be done to work with all Appstores and Carrier Billing.

If you an Appstore developer and want to know how to integrate OpenIAB protocol in your Appstore, please start with our Step-By-Step How-To

Basic Principles

  • As close to Google Play In-app Billing API as possible - we optimize the OpenIAB library by the following parameter "lines on code you need to change in an app that already works in Google Play to make it working in all the appstores"
  • One APK works in all appstores - OpenIAB chooses proper billing method automatically or follows your requirements
  • Open In-App Billing protocol - OpenIAB is designed provide lightweight solution that supports hundreds of appstores. When appstore implement OpenIAB protocol on appstore side all applications with OpenIAB become fully compatible with new appstore without recompile.
  • No middle man

No Middle Man

OpenIAB is an open source library that handles OpenIAB protocol and wraps some already existing IAB SDKs as well. It is important to understand that all payments are processed directly by appstore and there is no a middle man staying between the app developers and the appstores. OpenIAB is not a payment service. It is just an API how the apps communicate with appstores to request in-app billing. There is a common open API all the stores can use instead of each new store implement their own API and developers have to integrate all these different APIs in their apps.

How Can I Help?

  • If you are an Android app developer check the list of open tasks, check if any of these issues is interesting for you and comment that you want to help.
  • If you are an appstore and already support In-App Billing then we will be happy to understand how it works and what changes are needed to make it OpenIAB compatible. Please contact us or raise an new issue in GitHub
  • If you are an appstore and do not support In-App Billing yet but plan to support it then we will be glad working with your implement OpenIAB API. Please contact us or raise an new issue in GitHub

License

Source code of the OpenIAB library and the samples is available under the terms of the Apache License, Version 2.0: http://www.apache.org/licenses/LICENSE-2.0

The OpenIAB API specification and the related texts are available under the terms of the Creative Commons Attribution 2.5 license: http://creativecommons.org/licenses/by/2.5/

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