Use Braintree payment api in iOS app - ios

Question

I want to use Braintree API in my iOS app.
My app is used for renting purpose i.e. requester user has to make payment to the owner of asset he wanted for rent.
I have checked following links :
http://www.youtube.com/watch?v=s7GlgBFM20I
https://www.braintreepayments.com/developers
http://www.youtube.com/watch?v=2y8Tsml6JYo
https://www.braintreepayments.com/braintrust/venmo-touch-screencasts-add-one-touch-payments-to-your-app-in-15-minutes
etc.
But I didn't get any idea where to provide receiver's account details using Braintree or Venmo api, For Example we can pass e-mail of receiver in PayPal iOS sdk, and then PayPal pays the amount to the user registered with that e-mail.
The same thing I am searching in Braintree Payment API.
Any help is greatly appreciated.
Thanks in advance.
I am using below code : (Used from a sample code given by braintree)
/* Get called when user pay on Pay button on screen.
User wil see a form for entering his credit card number, CVV and expiration date. */
-(IBAction)payButtonClicked
{
self.paymentViewController =
[BTPaymentViewController paymentViewControllerWithVenmoTouchEnabled:YES];
self.paymentViewController.delegate = self;
[self presentViewController:self.paymentViewController animated:YES completion:nil];
}
// When a user types in their credit card information correctly, the BTPaymentViewController sends you
// card details via the `didSubmitCardWithInfo` delegate method.
//
// NB: you receive raw, unencrypted info in the `cardInfo` dictionary, but
// for easy PCI Compliance, you should use the `cardInfoEncrypted` dictionary
// to securely pass data through your servers to the Braintree Gateway.
- (void)paymentViewController:(BTPaymentViewController *)paymentViewController
didSubmitCardWithInfo:(NSDictionary *)cardInfo
andCardInfoEncrypted:(NSDictionary *)cardInfoEncrypted {
[self savePaymentInfoToServer:cardInfoEncrypted]; // send card through your server to Braintree Gateway
}
// When a user adds a saved card from Venmo Touch to your app, the BTPaymentViewController sends you
// a paymentMethodCode that you can pass through your servers to the Braintree Gateway to
// add the full card details to your Vault.
- (void)paymentViewController:(BTPaymentViewController *)paymentViewController
didAuthorizeCardWithPaymentMethodCode:(NSString *)paymentMethodCode {
// Create a dictionary of POST data of the format
// {"payment_method_code": "[encrypted payment_method_code data from Venmo Touch client]"}
NSMutableDictionary *paymentInfo = [NSMutableDictionary dictionaryWithObject:paymentMethodCode
forKey:#"payment_method_code"];
[self savePaymentInfoToServer:paymentInfo]; // send card through your server to Braintree Gateway
}
#define SAMPLE_CHECKOUT_BASE_URL #"http://venmo-sdk-sample-two.herokuapp.com"
//#define SAMPLE_CHECKOUT_BASE_URL #"http://localhost:4567"
// Pass payment info (eg card data) from the client to your server (and then to the Braintree Gateway).
// If card data is valid and added to your Vault, display a success message, and dismiss the BTPaymentViewController.
// If saving to your Vault fails, display an error message to the user via `BTPaymentViewController showErrorWithTitle`
// Saving to your Vault may fail, for example when
// * CVV verification does not pass
// * AVS verification does not pass
// * The card number was a valid Luhn number, but nonexistent or no longer valid
- (void) savePaymentInfoToServer:(NSDictionary *)paymentInfo {
NSURL *url;
if ([paymentInfo objectForKey:#"payment_method_code"]) {
url = [NSURL URLWithString: [NSString stringWithFormat:#"%#/card/payment_method_code", SAMPLE_CHECKOUT_BASE_URL]];
} else {
url = [NSURL URLWithString: [NSString stringWithFormat:#"%#/card/add", SAMPLE_CHECKOUT_BASE_URL]];
}
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
// You need a customer id in order to save a card to the Braintree vault.
// Here, for the sake of example, we set customer_id to device id.
// In practice, this is probably whatever user_id your app has assigned to this user.
NSString *customerId = [[UIDevice currentDevice] identifierForVendor].UUIDString;
[paymentInfo setValue:customerId forKey:#"customer_id"];
request.HTTPBody = [self postDataFromDictionary:paymentInfo];
request.HTTPMethod = #"POST";
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response, NSData *body, NSError *requestError)
{
NSError *err = nil;
if (!response && requestError) {
NSLog(#"requestError: %#", requestError);
[self.paymentViewController showErrorWithTitle:#"Error" message:#"Unable to reach the network."];
return;
}
NSDictionary *responseDictionary = [NSJSONSerialization JSONObjectWithData:body options:kNilOptions error:&err];
NSLog(#"saveCardToServer: paymentInfo: %# response: %#, error: %#", paymentInfo, responseDictionary, requestError);
if ([[responseDictionary valueForKey:#"success"] isEqualToNumber:#1]) { // Success!
// Don't forget to call the cleanup method,
// `prepareForDismissal`, on your `BTPaymentViewController`
[self.paymentViewController prepareForDismissal];
// Now you can dismiss and tell the user everything worked.
[self dismissViewControllerAnimated:YES completion:^(void) {
[[[UIAlertView alloc] initWithTitle:#"Success" message:#"Saved your card!" delegate:nil
cancelButtonTitle:#"OK" otherButtonTitles:nil] show];
[[VTClient sharedVTClient] refresh];
}];
} else { // The card did not save correctly, so show the error from server with convenenience method `showErrorWithTitle`
[self.paymentViewController showErrorWithTitle:#"Error saving your card" message:[self messageStringFromResponse:responseDictionary]];
}
}];
}

Answer 1

I work at Braintree. If you've got more questions or need more help, please reach out to our support team.
The Braintree iOS SDK docs include a quickstart guide, as well as detailed information about the features of the library.
If you're looking for information specifically on how to make payments between users of your app / web site, you should take a look at the marketplace guide and the Venmo APIs.