public new async void OnCanceled()
{
DatabaseFactory.getTextMessageDatabase().MarkAsSentFailed(messageId);
long threadId = DatabaseFactory.getTextMessageDatabase().GetThreadIdForMessage(messageId); // TODO
Recipients recipients = await DatabaseFactory.getThreadDatabase().getRecipientsForThreadId(threadId);
if (threadId != -1 && recipients != null)
{
ToastHelper.NotifyMessageDeliveryFailed(recipients, threadId);
}
}