/// <summary>
/// Updates the user interface to match the content.
/// </summary>
private void UpdateUserInterfaceFromContent()
{
BackgroundImageView.SetImageBitmap(BackgroundImage);
MenuBarView.SetButtons(MenuData.Buttons.Select(b => b.Title).ToList());
MenuBarView.RequestFocus();
}
/// <summary>
/// Loads the content asynchronously.
/// </summary>
public override async Task LoadContentAsync()
{
//
// Load the menu data.
//
var menu = Data.FromJson <Rest.Menu>();
//
// If the menu content hasn't actually changed, then ignore.
//
if (menu.ToJson().ComputeHash() == MenuData.ToJson().ComputeHash())
{
return;
}
MenuData = menu;
//
// Load the image and get the button titles.
//
UIImage image;
try
{
image = await Utility.LoadImageFromUrlAsync(Crex.Application.Current.GetAbsoluteUrl(MenuData.BackgroundImage.BestMatch));
}
catch
{
image = null;
}
var buttons = MenuData.Buttons.Select(b => b.Title).ToList();
LastLoadedDate = DateTime.Now;
//
// Update the UI with the image and buttons.
//
InvokeOnMainThread(() =>
{
EnsureView();
BackgroundImageView.Image = image;
MenuBarView.SetButtons(buttons);
SetNeedsFocusUpdate();
ShowNextNotification();
});
}