async void ProcessMetadataItems()
{
Console.WriteLine("ProcessMetadataItems");
NSMetadataItem[] metadataItems = documentMetadataQuery.Results;
// We only expect a single result to be returned by our NSMetadataQuery since we query for a specific file.
if (metadataItems.Length == 1)
{
var url = (NSUrl)metadataItems [0].ValueForAttribute(NSMetadataQuery.ItemURLKey);
if (document != null)
{
document.Close(null);
}
document = new ListDocument(url);
var success = await document.OpenAsync();
if (!success)
{
Console.WriteLine("Couldn't open document: {0}.", document.FileUrl.AbsoluteString);
return;
}
ResetContentSize();
TableView.ReloadData();
}
}
async void UpdateList()
{
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = true;
var success = await document.OpenAsync();
if (!success)
{
// In your app you should handle this gracefully.
Console.WriteLine("Couldn't open document: {0}.", DocumentURL.AbsoluteString);
throw new InvalidProgramException();
}
TableView.ReloadData();
UIApplication.SharedApplication.NetworkActivityIndicatorVisible = false;
}
async void FetchInfo(TaskCompletionSource <object> tcs)
{
ListDocument document = new ListDocument(Url);
bool success = await document.OpenAsync();
if (success)
{
Color = document.List.Color;
Name = document.LocalizedName;
tcs.SetResult(null);
document.Close(null);
}
else
{
tcs.SetException(new InvalidOperationException("Your attempt to open the document failed."));
}
}
