AIDL to Google Play Billing Library migration guide

This topic describes how to migrate away from a billing integration that uses the Android Interface Definition Language (AIDL). Accessing Google Play's billing system using AIDL is deprecated, and all integrations must use the Google Play Billing Library in the future.

Migration Steps

Import Google Play Billing Library

First, add a dependency to the Google Play Billing Library. If you are using Gradle, you can add the following to your app's build.gradle file:

Groovy

dependencies {
    def billing_version = "4.0.0"

    implementation "com.android.billingclient:billing:$billing_version"
}

Kotlin

dependencies {
    val billing_version = "4.0.0"

    implementation("com.android.billingclient:billing:$billing_version")
}

You can delete any "glue" code, such as IabHelper, which you might have copied from previous reference code. The functionality offered by IabHelper is now part of the Google Play Billing Library.

Remove the `com.android.vending.BILLING` permission

The Google Play Billing Library embeds the com.android.vending.BILLING permission inside its manifest. It is no longer necessary to explicitly add this permission inside your app's manifest.

Connect to Google Play Billing

The Google Play Billing Library's BillingClient handles connection management for you. To migrate, make the following changes to your app:

Create an instance of BillingClient.
Implement a BillingClientStateListener to receive callbacks about service status.
Call startConnection() on your BillingClient instance.
Remove onActivityResult() code related to in-app purchase and move to PurchasesUpdatedListener.

The following examples show how your app might look before and after making these changes:

Before

mServiceConn = new ServiceConnection() {
    @Override
    public void onServiceDisconnected(ComponentName name) {
      ...
    }

    @Override
    public void onServiceConnected(ComponentName name, IBinder service) {
      ...
    }
};

Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
serviceIntent.setPackage("com.android.vending");
List<ResolveInfo> intentServices = mContext.getPackageManager()
    .queryIntentServices(serviceIntent, 0);
if (intentServices != null && !intentServices.isEmpty()) {
    mContext.bindService(serviceIntent, mServiceConn, Context.BIND_AUTO_CREATE);
} else {
    // Handle errors.
    ...
}

...

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    IabResult result;
    if (requestCode != mRequestCode || data == null) {
        // Handle errors.
        ...
    }

    int responseCode = getResponseCodeFromIntent(data);
    String purchaseData = data.getStringExtra(RESPONSE_INAPP_PURCHASE_DATA);
    String dataSignature = data.getStringExtra(RESPONSE_INAPP_SIGNATURE);

    if (resultCode != Activity.RESULT_OK || responseCode != BILLING_RESPONSE_RESULT_OK) {
        // Handle errors.
        ...
    }

    // Process successful purchase.
    ...

    return true;
}

After

Kotlin

class MyBillingImpl(private var billingClient: BillingClient) : PurchasesUpdatedListener {

    init {
        billingClient = BillingClient.newBuilder(activity).setListener(this).build()
        billingClient.startConnection(object : BillingClientStateListener {
            override fun onBillingSetupFinished(billingResult: BillingResult?) {
                // Logic from ServiceConnection.onServiceConnected should be moved here.
            }

            override fun onBillingServiceDisconnected() {
                // Logic from ServiceConnection.onServiceDisconnected should be moved here.
            }
        })
    }

    override fun onPurchasesUpdated(
        billingResult: BillingResult?,
        purchases: MutableList<Purchase>?
    ) {
        // Logic from onActivityResult should be moved here.
    }
}

Java

public class MyBillingImpl implements PurchasesUpdatedListener {
    private BillingClient billingClient;
    ...

    public void initialize() {
        billingClient = BillingClient.newBuilder(activity).setListener(this).build();
        billingClient.startConnection(new BillingClientStateListener() {
            @Override
            public void onBillingSetupFinished(BillingResult billingResult) {
                // Logic from ServiceConnection.onServiceConnected should be moved here.
            }

            @Override
            public void onBillingServiceDisconnected() {
                // Logic from ServiceConnection.onServiceDisconnected should be moved here.
            }
        });
    }

    @Override
    public void onPurchasesUpdated(
        @BillingResponse int responseCode, @Nullable List<Purchase> purchases) {
        // Logic from onActivityResult should be moved here.
    }
}

Making a purchase

To launch the purchase dialog, do the following:

Convert your SKU details Bundle to SkuDetailsParams.
Switch the mService.getSkuDetails() call to instead use BillingClient.querySkuDetailsAsync()
Convert your buy intent Bundle to a BillingFlowParams object.
Switch the mService.getBuyIntent() call to instead use BillingClient.launchBillingFlow().
Remove any in-app purchase-related code from onActivityResult(), and move this code to a PurchasesUpdatedListener.

The following examples show how your app might look before and after making these changes:

Before

// Query Skus
String skuToSell = "premium_upgrade";
ArrayList<String> skus = new Arraylist<>();
skus.add(skuToSell);
Bundle querySkus = new Bundle();
querySkus.putStringArrayList(GET_SKU_DETAILS_ITEM_LIST, skus);
Bundle skuDetails = mService.getSkuDetails(3,
                                           mContext.getPackageName(),
                                           itemType,
                                           querySkus);

if (!skuDetails.containsKey(RESPONSE_GET_SKU_DETAILS_LIST)) {
    // Handle errors.
    ...
}

// Launch Buy Flow
Bundle buyIntentBundle = mService.getBuyIntent(3,
                                               mContext.getPackageName(),
                                               skuToSell,
                                               "Inapp",
                                               "");

int response = getResponseCodeFromBundle(buyIntentBundle);
if (response != BILLING_RESPONSE_RESULT_OK) {
    // Handle errors.
    ...
}

PendingIntent pendingIntent = buyIntentBundle.getParcelable(RESPONSE_BUY_INTENT);
act.startIntentSenderForResult(pendingIntent.getIntentSender(),
                               requestCode,
                               new Intent(),
                               Integer.valueOf(0),
                               Integer.valueOf(0),
                               Integer.valueOf(0));

// Purchase is handled in onActivityResult illustrated in the previous section.

After

Kotlin

val skuToSell = "premium_upgrade"
val skuList = mutableListOf<String>()
skuList.add(skuToSell)
val params = SkuDetailsParams.newBuilder()
params.setSkusList(skuList).setType(BillingClient.SkuType.INAPP)
billingClient.querySkuDetailsAsync(params.build(),
  object : SkuDetailsResponseListener {
    override fun onSkuDetailsResponse(
      billingResult: BillingResult?, skuDetailsList: MutableList<SkuDetails>?) {
        // Process the result.
        }
    })

// SkuDetails object obtained above.
val skuDetails = ...
val purchaseParams = BillingFlowParams.newBuilder()
  .setSkuDetails(skuDetails)
   .build()

billingClient.launchBillingFlow(activity, purchaseParams)

// Purchase is handled in onPurchasesUpdated illustrated in the previous section

Java

String skuToSell = "premium_upgrade";
List<String> skuList = new ArrayList<> ();
skuList.add(skuToSell);
SkuDetailsParams.Builder params = SkuDetailsParams.newBuilder();
params.setSkusList(skuList).setType(SkuType.INAPP);
billingClient.querySkuDetailsAsync(params.build(),
    new SkuDetailsResponseListener() {
        @Override
        public void onSkuDetailsResponse(BillingResult billingResult,
                                         List<SkuDetails> skuDetailsList) {
            // Process the result.
            ...
        }
    });

// SkuDetails object obtained above.
SkuDetails skuDetails = ...;

BillingFlowParams purchaseParams =
    BillingFlowParams.newBuilder()
            .setSkuDetails(skuDetails)
            .build();

mBillingClient.launchBillingFlow(mActivity, purchaseParams);

// Purchase is handled in onPurchasesUpdated illustrated in the previous section.

Consuming purchases

To consume purchases using the Google Play Billing Library, do the following:

Instead of calling consumePurchase(), call BillingClient.consumeAsync().
Implement ConsumeResponseListener.

The following examples show how your app might look before and after making these changes:

Before

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    int responseCode = data.getIntExtra(RESPONSE_CODE);
    JSONObject purchaseData =
        new JSONObject(data.getStringExtra("INAPP_PURCHASE_DATA"));

    String token = purchaseData.get("purchaseToken");

    ...

    // Consume purchase
    int response = mService.consumePurchase(3, mContext.getPackageName(), token);
    if (response != BILLING_RESPONSE_RESULT_OK) {
        // Handle errors.
        ...
    }

    // Handle successful consumption.
}

After

Kotlin

class MyBillingImpl(private val billingClient: BillingClient) :
        ... , ConsumeResponseListener {

  fun consumePurchase(purchaseToken: String) {
    val consumeParams = ConsumeParams
      .newBuilder()
      .setPurchaseToken(purchaseToken)
      .build()
  }

  override fun onConsumeResponse(
    billingResult: BillingResult?,
    purchaseToken: String?) {
      // Handle consumption
    }
 }

Java

public class MyBillingImpl implements ..., ConsumeResponseListener {
    private BillingClient billingClient;
    ...

    public void consumePurchase(String purchaseToken) {
        ConsumeParams consumeParams =
        ConsumeParams.newBuilder()
                .setPurchaseToken(purchaseToken)
                .build();
    }

    @Override
    void onConsumeResponse(BillingResult billingResult, String purchaseToken) {
        // Handle consumption.
        ...
    }
}

Acknowledge purchases

Starting with version 2.0 of the Google Play Billing Library, your app must consume or acknowledge all purchases.

If you don't consume or acknowledge a purchase within three days, Google automatically revokes the purchase and refunds the user. For more information, see Acknowledge a purchase.

Recognizing out-of-app purchases

To migrate out-of-app purchase handling to the Google Play Billing Library, do the following:

Ensure that your app calls BillingClient.queryPurchasesAsync() in your app's onResume() callback.
Remove the broadcast receiver for com.android.vending.billing.PURCHASES_UPDATED, and move the corresponding callback code to your PurchasesUpdatedListener.

Previously, when integrating Google Play Billing with AIDL, your app would need to register a listener to receive the com.android.vending.billing.PURCHASES_UPDATED intent to handle purchases made outside of your app.

With the Google Play Billing Library, your app should always call queryPurchasesAsync() in the onResume() callback of your app as a first step to ensure that all purchases made while your app wasn't running are recognized. While your app is running, the library listens for out-of-app purchases automatically, notifying you through the PurchasesUpdatedListener.

Handling pending transactions

Starting with version 2.0 of the Google Play Billing Library, your app must handle pending transactions that need additional action after purchasing before granting entitlement. For example, a user might choose to purchase your in-app product at a physical store using cash. This means that the transaction is completed outside of your app. In this scenario, you should grant entitlement only after the user has completed the transaction.

For more information, see Support pending transactions.

Developer payload

Developer payload has historically been used for various purposes, including fraud prevention and attributing purchases to the correct user. Now that the Google Play Billing Library supports these use cases, we have deprecated developer payload starting with version 2.2 of the Google Play Billing Library. For more information, see Developer payload.

Detailed error messages

Starting with version 2.0 of the Google Play Billing Library, all errors have corresponding debugging-related messages. These messages can be obtained by calling BillingResult.getDebugMessage().

AIDL to Google Play Billing Library migration guide

Migration Steps

Import Google Play Billing Library

Groovy

Kotlin

Remove the com.android.vending.BILLING permission

Connect to Google Play Billing

Kotlin

Java

Making a purchase

Kotlin

Java

Consuming purchases

Kotlin

Java

Acknowledge purchases

Recognizing out-of-app purchases

Handling pending transactions

Developer payload

Detailed error messages

Remove the `com.android.vending.BILLING` permission