public static OrderingPageModel GetSingleton(INavigation navigation)
{
if (_singleton == null)
{
_singleton = new OrderingPageModel();
}
_singleton.OnAppearing(navigation);
return(_singleton);
}
public OrderingPage(string deliveryAddress, string zipCode, DateTime deliveryDate, string deliveryTime)
{
InitializeComponent();
this.BindingContext = OrderingPageModel.GetSingleton(this.Navigation);
(this.BindingContext as OrderingPageModel).InitializeAsync(deliveryAddress, zipCode, deliveryDate, deliveryTime);
}
