private func showWarningView() {
DispatchQueue.main.async { [weak self] in
guard let self = self else { return }
var newConstant: CGFloat!
if self.warningViewTopConstraint.constant == 0.0 {
newConstant = 100.0
} else {
newConstant = 0.0
}
self.warningViewTopConstraint.constant = newConstant
UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseIn, animations: { [weak self] in
guard let self = self else { return }
self.view.layoutIfNeeded()
}, completion: nil)
}
}
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