gistfile1.txt

- (void) loginToGateway {
    MobileDeviceLoginRequest *mobileDeviceLoginRequest =
        [MobileDeviceLoginRequest mobileDeviceLoginRequest];
    mobileDeviceLoginRequest.anetApiRequest.merchantAuthentication.name = <USERNAME>;
    mobileDeviceLoginRequest.anetApiRequest.merchantAuthentication.password = <PASSWORD>;
    mobileDeviceLoginRequest.anetApiRequest.merchantAuthentication.mobileDeviceId =
        [[[UIDevice currentDevice] uniqueIdentifier]
        stringByReplacingOccurrencesOfString:@"-" withString:@"_"];

    AuthNet *an = [AuthNet getInstance];
    [an setDelegate:self];
    [an mobileDeviceLoginRequest: mobileDeviceLoginRequest];
}

- (void) createTransaction {
    AuthNet *an = [AuthNet getInstance];

    [an setDelegate:self];

    CreditCardType *creditCardType = [CreditCardType creditCardType];
    creditCardType.cardNumber = @"4111111111111111";
    creditCardType.cardCode = @"100";
    creditCardType.expirationDate = @"1212";

    PaymentType *paymentType = [PaymentType paymentType];
    paymentType.creditCard = creditCardType;

    ExtendedAmountType *extendedAmountTypeTax = [ExtendedAmountType extendedAmountType];
    extendedAmountTypeTax.amount = @"0";
    extendedAmountTypeTax.name = @"Tax";

    ExtendedAmountType *extendedAmountTypeShipping = [ExtendedAmountType extendedAmountType];
    extendedAmountTypeShipping.amount = @"0";
    extendedAmountTypeShipping.name = @"Shipping";

    LineItemType *lineItem = [LineItemType lineItem];
    lineItem.itemName = @"Soda";
    lineItem.itemDescription = @"Soda";
    lineItem.itemQuantity = @"1";
    lineItem.itemPrice = @"1.00";
    lineItem.itemID = @"1";

    TransactionRequestType *requestType = [TransactionRequestType transactionRequest];
    requestType.lineItems = [NSArray arrayWithObject:lineItem];
    requestType.amount = @"1.00";
    requestType.payment = paymentType;
    requestType.tax = extendedAmountTypeTax;
    requestType.shipping = extendedAmountTypeShipping;

    CreateTransactionRequest *request = [CreateTransactionRequest createTransactionRequest];
    request.transactionRequest = requestType;
    request.transactionType = AUTH_ONLY;
    request.anetApiRequest.merchantAuthentication.mobileDeviceId =
        [[[UIDevice currentDevice] uniqueIdentifier]
        stringByReplacingOccurrencesOfString:@"-" withString:@"_"];
    request.anetApiRequest.merchantAuthentication.sessionToken = sessionToken;
    [an purchaseWithRequest:request];
}

- (void) requestFailed:(AuthNetResponse *)response {
    // Handle a failed request
}

- (void) connectionFailed:(AuthNetResponse *)response {
    // Handle a failed connection
}

- (void) paymentSucceeded:(CreateTransactionResponse *) response {
    // Handle payment success
}

- (void) mobileDeviceLoginSucceeded:(MobileDeviceLoginResponse *)response {
    sessionToken = [response.sessionToken retain];
    [self createTransaction];
}