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UIViewController {
func showActivityIndicator() {
let activityIndicatorView: UIActivityIndicatorView = UIActivityIndicatorView(style: .medium)
activityIndicatorView.frame = view.bounds
activityIndicatorView.autoresizingMask = [.flexibleTopMargin, .flexibleBottomMargin, .flexibleLeftMargin, .flexibleRightMargin]
view.addSubview(activityIndicatorView)
activityIndicatorView.startAnimating()
}
func hideActivityIndicatorView() {
if
let activityIndicator: UIView = view.subviews.first(where: {$0
is UIActivityIndicatorView}) {
activityIndicator.removeFromSuperview()
}
}
}
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