[ios] Main.storyboard: warning: Unsupported Configuration: Medium Style before iOS 13.0

Loading Bar로 작명된 Application Indicator에서 다음과 같은 경고가 났다.

Unsupported Configuration: Medium Style before iOS 13.0

 

경고 메세지를 없애는 방법은

1) 타겟 ios를 ios 13.0 이상으로 올리거나

2) 아래처럼 viewDidLoad() 메소드에 코드를 작성한다.

// To solve this, Set your project's iOS Deployment Target to iOS 13.0 (or later).

// If you cannot do that, choose one of the deprecated styles on the storyboad and 
// set Large style programmatically:
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        //...
        if #available(iOS 13.0, *) {
            activityIndicator.style = .large
        } else {
            activityIndicator.style = .whiteLarge
        }
    }