Hide status bar with animation

ViewController.swift

class ViewController: UIViewController {
  var statusBarHidden: Bool = false {
      didSet {
          UIView.animate(withDuration: 0.25) { [weak self] in
              self?.setNeedsStatusBarAppearanceUpdate()
          }
      }
  }

  override var prefersStatusBarHidden: Bool {
      get {
          return statusBarHidden
      }
  }

  override var preferredStatusBarUpdateAnimation: UIStatusBarAnimation {
      get {
          return .slide
      }
  }
  
  func hideStatusBar() {
      statusBarHidden = true
  }
  
  func showStatusBar() {
      statusBarHidden = false
  }
}