Client reference

The com.google.android.gms.wallet documentation contains full documentation for the library across multiple versions of the Google Pay API. Below is a summary of objects and methods most applicable to the most recent version of the Google Pay API: version 2.0

Wallet

Generate a PaymentsClient for a test or production environment.

Example

mPaymentsClient = Wallet.getPaymentsClient(
  this,
  new Wallet.WalletOptions.Builder()
      .setEnvironment(WalletConstants.ENVIRONMENT_TEST)
      .build()
);

PaymentsClient

A client for interacting with the Google Pay APIs.

isReadyToPay(IsReadyToPayRequest)

Use the isReadyToPay(IsReadyToPayRequest) method to determine a user's ability to return a form of payment from the Google Pay API.

If the device supports Google Pay, and the user either has already saved a payment method or can add one, IsReadyToPay returns true. To determine whether the user already saved a payment method in Google Pay, set IsReadyToPayRequest.existingPaymentMethodRequired to true.

loadPaymentData(PaymentDataRequest)

Present a Google Pay payment sheet allowing selection of a payment method and optionally configured parameters.

IsReadyToPayRequest

Build an IsReadyToPayRequest Java object suitable for use with PaymentsClient.isReadyToPay().

fromJson(java.lang.String)

Create an IsReadyToPayRequest Java object from a JSON-formatted string. See the IsReadyToPayRequest object reference for the expected structure of the provided JSON-formatted string.

PaymentDataRequest

Build a PaymentDataRequest Java object suitable for use with PaymentsClient.loadPaymentData.