MGTwitter Sessions - iphone

Question

I am using the MGTwitterEngine+Oauth library to integrate Twitter into my iPhone app. Using the below included code I am able to allow users to log into twitter.
if(_engine) return;
_engine = [[SA_OAuthTwitterEngine alloc] initOAuthWithDelegate:self];
_engine.consumerKey = #"XXXXXX";
_engine.consumerSecret = #"XXXXXXXXX";
UIViewController *controller = [SA_OAuthTwitterController controllerToEnterCredentialsWithTwitterEngine: _engine delegate: self];
if (controller)
{
[self presentModalViewController: controller animated: YES];
}
I also have the following delegate methods for handling the callback.
#pragma mark SA_OAuthTwitterEngineDelegate
- (void) storeCachedTwitterOAuthData: (NSString *) data forUsername: (NSString *) username {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
[defaults setObject: data forKey: #"authData"];
[defaults synchronize];
}
- (NSString *) cachedTwitterOAuthDataForUsername: (NSString *) username {
return [[NSUserDefaults standardUserDefaults] objectForKey: #"authData"];
}
#pragma mark SA_OAuthTwitterController Delegate
- (void) OAuthTwitterController: (SA_OAuthTwitterController *) controller authenticatedWithUsername: (NSString *) username {
NSLog(#"Authenticated with user %#", username);
//tweets = [[NSMutableArray alloc] init];
[self updateStream:nil];
}
- (void) OAuthTwitterControllerFailed: (SA_OAuthTwitterController *) controller {
NSLog(#"Authentication Failure");
}
- (void) OAuthTwitterControllerCanceled: (SA_OAuthTwitterController *) controller {
NSLog(#"Authentication Canceled");
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
the users are able to tweet using the following code:
[_engine sendUpdate:#"Tweet"];
This all seems pretty standard but for some reason if I try to create another engine from another class or for a returning user, the user is forced to relogin in order to create a usable engine. What am I missing?

Answer 1

The code is right. You have created the new instance so it is asking for the authentication.