Its a shame NSURL can't do this task for us. So here's my stab at it:
You can then use it like so:
NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys: @"jim", @"username", @"abc123", @"password", nil];
NSString *urlWithQuerystring = [self addQueryStringToUrl:@"https://myapp.com/login" params:params];
Thanks for reading! And if you want to get in touch, I'd love to hear from you: chris.hulbert at gmail.
(Comp Sci, Hons - UTS)
iOS Developer in Sydney.
I have worked at places such as Google, News Corp, Fox Sports, NineMSN, FetchTV, Woolworths, and Westpac, among others. If you're looking for a good iOS developer, drop me a line!