いくばくかマシに

gistfile1.m

- (void)signUpViewController:(PFSignUpViewController *)signUpController didFailToSignUpWithError:(NSError *)error
{
    DNSLogError(@"Error while signing up: %@", error);
    UIAlertView *alertView = [[UIAlertView alloc] init];
    alertView.title = @"Error while sigining up";
    alertView.message = error.localizedDescription;
    [alertView addButtonItem:[RIButtonItem itemWithLabel:@"OK" action:^{
        dispatch_async(dispatch_get_main_queue(), ^{
            [self dismissViewControllerAnimated:YES completion:NULL];
        });
    }]];
    [alertView show];
}