Why are toast notification not displays sometimes?

Question

I debug the code and no errors are reported. Yet the toast does not show up inside the app.

Answer 1

Take a look at the troubleshooting suggestions in Guidelines and checklist for toast notifications, and if you still need help please provide more information about the problem: what exactly is your code doing? what does the XML look like? is this a problem on just one machine or on several? do toasts from other apps work? etc.

Answer 2

This is the code:

ToastNotificationManager = Notifications.ToastNotificationManager;

  toast = function(options) {
    var i, textElements, texts, xml, _i, _ref;
    options.template || (options.template = "toastText01");
    xml = ToastNotificationManager.getTemplateContent(ToastTemplateType[options.template]);
    if (!Array.isArray(options.text)) {
      texts = [options.text];
    }
    textElements = xml.getElementsByTagName("text");
    for (i = _i = 0, _ref = Math.min(texts.length, textElements.length) - 1; _i <= _ref; i = _i += 1) {
      textElements[i].appendChild(xml.createTextNode(texts[i]));
    }
    toast = new ToastNotification(xml);
    toast.onactivated = options.onactivated;
    return ToastNotificationManager.createToastNotifier().show(toast);

And the XML looks valid.

<toast><visual><binding template="ToastText01"><text id="1">One document trashed.</text></binding></visual></toast>

Notifications are enabled system wide and other apps show notifications.