Google Pay

Client-Side Implementationanchor

important

The SSL certificates for all Braintree SDKs are set to expire by June 31, 2025. This will impact existing versions of the SDK in published versions of your app. To reduce the impact, upgrade the Android SDK to version 4.45.0+ or version 5.0.0+ for the new SSL certifications.

If you do not decommission your app versions that include the older SDK versions or force upgrade your app with the updated certificates by the expiration date, 100% of your customer traffic will fail.

Choose an integration methodanchor

You can accept Google Pay with either our Drop-in UI or a custom integration.

Drop-in integrationanchor

Our Drop-in UI is the fastest way to set up your client-side integration.

For full details, see Drop-in Setup and Integration.

Custom integrationanchor

Add the following in your app-level build.gradle:

  1. Groovy
dependencies {
  implementation 'com.braintreepayments.api:google-pay:4.39.0'
}

Initializationanchor

First, create a BraintreeClient with a ClientTokenProvider or Tokenization Key. Then construct a GooglePayClient.

Before showing the Google Pay button, use the GooglePayClient#isReadyToPay method to check whether the user's current device is compatible. When the result is true, show the Google Pay button. When the result is false, display other checkout options.

  1. Kotlin
  2. Java
braintreeClient = BraintreeClient(this, ExampleClientTokenProvider())
googlePayClient = GooglePayClient(this, braintreeClient)
googlePayClient.isReadyToPay(this) { isReadyToPay, error -> 
  if (isReadyToPay) {
    // show Google Pay button
  }
}

You will need a button element on your page styled according to Google's brand guidelines.

The CARD payment method type is supplied by the Braintree Android SDK as an allowed payment method when making the IsReadyToPayRequest. It also provides the PAYPAL payment method type if you are using Google Pay v2 and currently accept PayPal payments. If you desire different behavior for the IsReadyToPayRequest, you can follow Google's documentation and make the IsReadyToPayRequest outside of the Braintree Android SDK.

Requesting a paymentanchor

Google Pay requires a price to be specified using the 'TransactionInfo' object. Build a 'TransactionInfo' object and provide it at the time of payment, along with your Google-provided googleMerchantId for production transactions.

Implement a GooglePayListener to receive results, and call 'requestPayment' to invoke the payment flow.

  1. Java
  2. Kotlin
public class MyActivity extends AppCompatActivity implements GooglePayListener {
  
  private BraintreeClient braintreeClient;
  private GooglePayClient googlePayClient;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    braintreeClient = new BraintreeClient(this, new ExampleClientTokenProvider());
    googlePayClient = new GooglePayClient(this, braintreeClient);
    googlePayClient.setListener(this);
  }

  public void onGooglePayButtonClick(View view) {
    GooglePayRequest googlePayRequest = new GooglePayRequest();
    googlePayRequest.setTransactionInfo(TransactionInfo.newBuilder()
        .setTotalPrice("1.00")
        .setTotalPriceStatus(WalletConstants.TOTAL_PRICE_STATUS_FINAL)
        .setCurrencyCode("USD")
        .build());
    googlePayRequest.setBillingAddressRequired(true);

    googlePayClient.requestPayment(this, googlePayRequest);
  }

  @Override
  public void onGooglePaySuccess(@NonNull PaymentMethodNonce paymentMethodNonce) {
      // send paymentMethodNonce.getString() to server
  }

  @Override
  public void onGooglePayFailure(@NonNull Exception error) {
    if (error instanceof UserCanceledException) {
      // user canceled
    } else {
      // handle error
    }
  }
}

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