ACAccountStore Twitter

gistfile1.m

    ACAccountStore *store = [[ACAccountStore alloc] init]; // Long-lived
    ACAccountType *twitterType = [store accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];
    [store requestAccessToAccountsWithType:twitterType withCompletionHandler:^(BOOL granted, NSError *error) {
        if(granted) {
            // Access has been granted, now we can access the accounts
            // Remember that twitterType was instantiated above
            NSArray *twitterAccounts = [store accountsWithAccountType:twitterType];
            
            // If there are no accounts, we need to pop up an alert
            if(twitterAccounts != nil && [twitterAccounts count] == 0) {
                [[[UIAlertView alloc] initWithTitle:@"No Twitter Accounts"
                                            message:@"There are no Twitter accounts configured. You can add or create a Twitter account in Settings."
                                           delegate:nil
                                  cancelButtonTitle:@"OK"
                                  otherButtonTitles:nil] show];
            } else {
                ACAccount *account = [twitterAccounts objectAtIndex:0];
                // Do something with their Twitter account
                NSLog(@"acaccount = %@", account);
                
                NSURL *url = [NSURL URLWithString:@"http://api.twitter.com/1/account/verify_credentials.json"];
                TWRequest *req = [[TWRequest alloc] initWithURL:url
                                                     parameters:nil
                                                  requestMethod:TWRequestMethodGET];
                
                // Important: attach the user's Twitter ACAccount object to the request
                req.account = account;
                
                [req performRequestWithHandler:^(NSData *responseData,
                                                 NSHTTPURLResponse *urlResponse,
                                                 NSError *error) {
                    
                    // If there was an error making the request, display a message to the user
                    if(error != nil) {
                        [[[UIAlertView alloc] initWithTitle:@"Twitter Error"
                                                    message:@"There was an error talking to Twitter. Please try again later."
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil] show];
                        return;
                    }
                    
                    // Parse the JSON response
                    NSError *jsonError = nil;
                    id resp = [NSJSONSerialization JSONObjectWithData:responseData
                                                              options:0
                                                                error:&jsonError];
                    
                    // If there was an error decoding the JSON, display a message to the user
                    if(jsonError != nil) {
                        [[[UIAlertView alloc] initWithTitle:@"Twitter Error"
                                                    message:@"Twitter is not acting properly right now. Please try again later."
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil] show];
                        return;
                    }
                    
                    NSLog(@"resp = %@", resp);
                    
                    NSString *screenName = [resp objectForKey:@"screen_name"];
                    NSString *fullName = [resp objectForKey:@"name"];
                    NSString *location = [resp objectForKey:@"location"];
                    
                    // Make sure to perform our operation back on the main thread
                    dispatch_async(dispatch_get_main_queue(), ^{
                        // Do something with the fetched data
                        
                        NSLog(@"screenName = %@\nfullName = %@\nlocation = %@", screenName, fullName, location);
                        
                        
                    });
                }];
                
                
                
            }
        }
        // Handle any error state here as you wish
    }];