[IOS / Object-C] - IOS 상태바 Indicator / 상태바 로딩

- (NSURLRequest *)connection:(NSURLConnection *) connection

             willSendRequest:(NSURLRequest *)request

            redirectResponse:(NSURLResponse *)response {

   [UIApplication sharedApplication].networkActivityIndicatorVisible = YES; // 커넥션 시작 시 로딩 켬

}

- (void) connection : (NSURLConnection *) connection didFailWithError:(NSError *) error {

  [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; // 커넥션 오류 시 로딩 끔

}

- (void) connectionDidFinishLoading : (NSURLConnection *) connection {

  [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; // 커넥션 종료 시 로딩 끔

}