private async Task <List <IFavorite> > DeserializeFavoritesFile()
{
await Initialization;
var settings = new JsonSerializerSettings {
TypeNameHandling = TypeNameHandling.Objects
};
try
{
using (Stream inStream = await _favoritesFile.OpenStreamForReadAsync())
using (var gzip = new GZipStream(inStream, CompressionMode.Decompress))
{
return(gzip.DeseriaizeJsonFromStream <List <IFavorite> >(settings));
}
}
catch (IOException ex)
{
//todo: Log me
System.Diagnostics.Debug.WriteLine($"Could not deserialize favorites: {ex}: {ex.Message}");
return(null);
}
}
public override async Task OnNavigatedToAsync(object parameter, NavigationMode mode, IDictionary <string, object> suspensionState)
{
BootStrapper.BackRequested += BootStrapper_BackRequested;
if (suspensionState.ContainsKey(SuspensionKeys.TripResults_HasSavedState) &&
(bool)suspensionState[SuspensionKeys.TripResults_HasSavedState])
{
IStorageFile tripResultCacheFile = await _fileService.GetTempFileAsync(
SuspensionKeys.TripResults_HasSavedState, CreationCollisionOption.OpenIfExists);
using (Stream fileInStream = await tripResultCacheFile.OpenStreamForReadAsync())
using (var gzip = new GZipStream(fileInStream, CompressionMode.Decompress))
{
TripItinerary[] tripsArray = gzip.DeseriaizeJsonFromStream <TripItinerary[]>();
TripResults = new ObservableCollection <TripItinerary>(tripsArray);
}
FromName = (string)suspensionState[SuspensionKeys.TripResults_FromName];
ToName = (string)suspensionState[SuspensionKeys.TripResults_ToName];
suspensionState.Remove(SuspensionKeys.TripResults_HasSavedState);
}
await Task.CompletedTask;
}