Client side IOS to Server using Braintree Payment Process - ios

Question

I'm using Braintree for Payment process in my application
[BTPaymentViewController paymentViewControllerWithVenmoTouchEnabled:NO];and use this method for encryption
`
(void)paymentViewController:(BTPaymentViewController *)paymentViewController
didSubmitCardWithInfo:(NSDictionary *)cardInfo
andCardInfoEncrypted:(NSDictionary *)cardInfoEncrypted {
NSDictionary *dict=[self encryptFormData:cardInfo];
[self savePaymentInfoToServer:dict];
}
-(NSDictionary *) encryptFormData:(NSDictionary *) formData {
BTEncryption *braintree = [[BTEncryption alloc] initWithPublicKey: PUBLIC_KEY];
NSMutableDictionary *encryptedParams = [[NSMutableDictionary alloc] init];
[formData enumerateKeysAndObjectsUsingBlock:^(id key, id object, BOOL *stop) {
[encryptedParams setObject: [braintree encryptString: object] forKey: key];
}];
return encryptedParams;
}
call to this method to post the data to localhost server for testing
- (void) savePaymentInfoToServer:(NSDictionary *)paymentInfo {
NSURL *url = [NSURL URLWithString: [NSString stringWithFormat:#"%#/card", 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;
AppDelegate *appdelegate=(AppDelegate *) [[UIApplication sharedApplication]delegate];
[paymentInfo setValue:appdelegate.referenceId forKey:#"bookingRefId"];
[paymentInfo setValue:appdelegate.passengerId forKey:#"passengerId"];
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 *<b>responseDictionary</b> = [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];
}];
} 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]];
}
}];
}`
contain responseDictionary is null and error is null how to fix the issue can any one help me

Answer 1

where are you sending the paymentInfo dictionary to (i.e. what is SAMPLE_CHECKOUT_BASE_URL)? The example project built by Braintree simulates a backend as if you had one yourself. You will want to replace that URL with your backend's URL.
The BTPaymentViewController provides a client-side credit card checkout page, but your backend still has to execute the transaction. For your backend to execute that transaction, you'll have to send that paymentInfo dictionary to your servers.
If you haven't yet built a backend for your iOS app, you can quickly get set up and approved in minutes with Braintree to process your payments.