/// <summary>
/// Use this method to restore session state and navigation history. This method should only be called if Initialize() has already been executed./>
/// </summary>
/// <returns>
/// True if app state was successfully restored.
/// </returns>
public static async Task <bool> TryRestoreState()
{
try
{
StorageFile navFile = await _folder.GetFileAsync(NAV_FILE_NAME);
StorageFile stateFile = await _folder.GetFileAsync(STATE_FILE_NAME);
PageStates = await StorageHelper.TryReadAsync <List <Dictionary <string, object> > >(stateFile, _standardKnownTypes);
int topIndex = PageStates.Count - 1;
_pageState = PageStates[topIndex];
PageStates.RemoveAt(topIndex);
string navHistory = await StorageHelper.TryReadAsync(navFile);
RootFrame.SetNavigationState(navHistory);
return(true);
}
catch
{
return(false);
}
}
