[iPhone SDK] indicator 사용법

    UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
    indicator.hidesWhenStopped = YES;
    [self.view addSubview:indicator];

    [indicator startAnimating];
    [indicator stopAnimating];

뺑글뺑글 돌아가는 indicator 사용방법