Cycling images in a live tile - visual-studio-2012

Question

I have a winJS app that is a working launcher for a steam game. I'd like to get it to cycle through 5 images even while not running.
It uses only the small tile — there are no wide tiles images for this app.
Here's the code:
(function () {
"use strict";
WinJS.Namespace.define("Steam", {
launch: function launch(url) {
var uri = new Windows.Foundation.Uri(url);
Windows.System.Launcher.launchUriAsync(uri).then(
function (success) {
if (success) {
// File launched
window.close();
} else {
// File launch failed
}
}
);
}
});
WinJS.Namespace.define("Tile", {
enqueue: function initialize() {
var updaterHandle = Windows.UI.Notifications.TileUpdateManager.createTileUpdaterForApplication();
updaterHandle.enableNotificationQueue(true);
return updaterHandle;
},
update: function update () {
var template = Windows.UI.Notifications.TileTemplateType.tileSquareImage;
var tileXml = Windows.UI.Notifications.TileUpdateManager.getTemplateContent(template);
var randIndx = Math.floor(Math.random() * 5);
var randUpdatetime = 1000 * 3 * (((randIndx == 0) ? 1 : 0) + 1); // let the base image stay longer
var tileImageAttributes = tileXml.getElementsByTagName("image");
tileImageAttributes[0].setAttribute("src", "ms-appx:///images/Borderlands2/borderlands_2_" + randIndx + "_sidyseven.png");
tileImageAttributes[0].setAttribute("alt", "Borderlands 2");
var tileNotification = new Windows.UI.Notifications.TileNotification(tileXml);
var currentTime = new Date();
tileNotification.expirationTime = new Date(currentTime.getTime() + randUpdatetime);
tileNotification.tag = "newTile";
var updater = Tile.enqueue();
updater.update(tileNotification);
setTimeout('Tile.update();', randUpdatetime);
}
});
WinJS.Binding.optimizeBindingReferences = true;
var app = WinJS.Application;
var activation = Windows.ApplicationModel.Activation;
app.onactivated = function (args) {
if (args.detail.kind === activation.ActivationKind.launch) {
setTimeout('Steam.launch("steam://rungameid/49520");', 800);
args.setPromise(WinJS.UI.processAll().then(function () {
return WinJS.Navigation.navigate("/default.html", args).then(function () {
Tile.update();
});
}));
}
};
app.start();
})();
Notes:
The code currently does not cycle the image, instead either
apparently never changing, or after launch replacing the application
name text with a tiny view of the default image. This reverts to the
text after a short time, and the cycle may repeat. It never shows a
different image (neither in the small image it erroneously shows, nor
in the main tile).
When I run in debug and set a breakpoint at the
TileUpdater.update(TileNotification) stage, I can verify in the
console that the image src attribute is set to a random image
just as I wanted:
>>>>tileNotification.content.getElementsByTagName("image")[0].getAttribute("src")
"ms-appx:///images/Borderlands2/borderlands_2_4_sidyseven.png"
But this never actually displays on the tile.
These image files are included in the solution, and they appear in the proper directory in the Solution Explorer.

Answer 1

If the image src attribute is set properly in debug then the image may not have the proper "Build Action".
In the 'Properties' of each image, set "Build Action" to "Resource".