Accessing global variable? - objective-c

Question

I have the following code to login to a web service and store the authentication token:
loginViewController.h
#interface loginViewController : UIViewController<XMLRPCConnectionDelegate>
#property (strong, nonatomic) IBOutlet UITextField *SSO;
#property (weak, nonatomic) IBOutlet UITextField *PASS;
#property (weak, nonatomic) IBOutlet UITextView *LoginError;
#property (nonatomic, retain) NSString *token;
#end
loginViewcontroller.m
#import "loginViewController.h"
#implementation loginViewController
#synthesize SSO;
#synthesize PASS;
#synthesize LoginError;
#synthesize token;
- (IBAction)coreLoginClicked:(id)sender {
NSURL *URL = [NSURL URLWithString: #"https://somesite"];
XMLRPCRequest *request = [[XMLRPCRequest alloc] initWithURL: URL];
XMLRPCConnectionManager *manager = [XMLRPCConnectionManager sharedManager];
[request setMethod:#"systemLogin" withParameters:[NSArray arrayWithObjects: SSO.text, PASS.text, nil]];
[manager spawnConnectionWithXMLRPCRequest: request delegate: self];
NSLog(#"Request body: %#", [request body]);
}
- (void)request: (XMLRPCRequest *)request didReceiveResponse: (XMLRPCResponse *)response {
if (![response faultCode]) {
token = [response object];
[self performSegueWithIdentifier:#"loginSegue" sender:self];
NSLog(#"Response object: %#", [response object]);
}
I have this code in my view controller that is displayed after successful login:
loginViewController* login = [[loginViewController alloc] init];
NSLog(#"Token: %#", login.token);
The value of login.token is nil. What am I doing wrong here? Is this the incorrect way of setting and accessing a global variable?
I was following the tutorial on Objective-C from lynda.com, and this way how they did it.. but maybe I missed something.
Thanks!

Answer 1

You're allocating a new instance, which means it'll be empty. If you want to be able to store objects in a class, you will have to use that instance to get the variables back.

Answer 2

Try accessing token via self:
NSLog(#"Token: %#", self.token);

Answer 3

Your second code bit does this: creates a new instance of the loginVC, and then checks to see if it has a token. You need to instantiate your loginVC, then do your login, and then it will have a value in token. Whatever class/method instantiates the loginVC will then be able to check that instance of loginVC for the token.