// Parameters:
// 1) Context - current context
// 2) InAppSDKApiClient.Environment - CYBS ENVIRONMENT
// 3) API_LOGIN_ID String - merchant's API LOGIN ID 
apiClient = new InAppSDKApiClient.Builder (getActivity(),
                                          InAppSDKApiClient.Environment.ENV_TEST, API_LOGIN_ID) 
                                          .sdkConnectionCallback(this) // receive callbacks for connection results
                                          .sdkApiProdEndpoint(PAYMENTS_PROD_URL) // option to configure PROD Endpoint
                                          .sdkApiTestEndpoint(PAYMENTS_TEST_URL) // option to configure TEST Endpoint
                                          .sdkConnectionTimeout(5000) // optional connection time out in milliseconds
                                          .transactionNamespace(TRANSACT_NAMESPACE) // optional
                                          .build();

SDKTransactionObject 
  // Type of transaction object 
  .createTransactionObject(SDKTransactionType.SDK_TRANSACTION_ENCRYPTION)
  // Merchant reference code can be set to anything meaningful
  .merchantReferenceCode("Android_Sample_Code")
  // Card data to be encrypted
  .cardData(prepareTestCardData())
  // Optional billing info
  .billTo(prepareBillingInfo())
  .build();

SDKCardData cardData = new SDKCardData.Builder(ACCOUNT_NUMBER,
                                               EXPIRATION_MONTH, // MM
                                               EXPIRATION_YEAR) // YYYY
                                               .cvNumber(CARD_CVV) // Optional
                                               .type(SDKCardAccountNumberType.PAN) // Optional if unencrypted. If the value is set to a token then it is not optional and must be set to SDKCardType.TOKEN
                                               .build();

SDKBillTo billTo = new SDKBillTo.Builder()
                .firstName("First Name")
                .lastName("Last Name")
                .postalCode("98052")
                .build();

// Parameters: 
// 1. InAppSDKApiClient.Api - Type of API to make a request
// 2. SDKTransactionObject - The transaction object for current transaction
// 3. Signature String - Fresh message signature for this transaction. The signature generation should always occur outside of a mobile application, for security reasons.  The sample code shows this process occurring inside the application for simplicity, but that workflow should not be used in production systems.
apiClient.performApi(InAppSDKApiClient.Api.API_ENCRYPTION, transactionObject, generateSignature(transactionObject));

@Override
public void onApiConnectionFinished(SDKGatewayResponse response) 
{ 
  Toast.makeText(getActivity(), 
                 response.getType() + " : " + response.getDecision().toString(),
                 Toast.LENGTH_LONG)
                 .show();
}

@Override
public void onErrorReceived(SDKError error) 
{ 
  Toast.makeText(getActivity(), 
                 error.getErrorExtraMessage().toString(),
                 Toast.LENGTH_LONG)
                 .show();
}