swift - ios 13后获取 statusBarHeight

        if #available(iOS 13.0, *){
            let statusBarManager:UIStatusBarManager = UIApplication.shared.windows.first!.windowScene!.statusBarManager!
        statusBarHeight = Double(Int(statusBarManager.statusBarFrame.size.height));
        }
        else {
            statusBarHeight = Double(UIApplication.shared.statusBarFrame.size.height);
        }