xcode 인디케이터

-(void)viewWillAppear:(BOOL)animated{

    // ProgressBar Setting

    activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0, 0, 32, 32)];

    [activityIndicator setCenter:self.view.center];

    [activityIndicator setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleGray];

    [self.view addSubview : activityIndicator];

    [self.view bringSubviewToFront:activityIndicator];

    

    // ProgressBar Start

    activityIndicator.hidden= FALSE;

    [activityIndicator startAnimating];

}

-(void)viewDidAppear:(BOOL)animated{

    [activityIndicator stopAnimating];

    activityIndicator.hidden= TRUE;

}