使用定期通知更新 WIndows 8 应用程序中的所有磁贴大小

Question

我有一个应用程序框架（在 JavaScript 中），它可以动态设置动态磁贴提要的 URL。在我的代码中，我有类似下面的内容，这适用于宽磁贴，但是当我将磁贴调整为“中”（或“小”）时，实时提要/更新消失了。如果我将大小调整回宽，它就可以了。没有其他磁贴设置（它使用默认设置）。

我的问题是：是否可以同时更新所有图块大小，还是我必须使用getTemplateContent() 和TileUpdater 的update() 方法构建一个完整的XML 对象？

我目前像这样更新定期 URL（同样，这适用于宽图块）：

var updater = Windows.UI.Notifications.TileUpdateManager.createTileUpdaterForApplication();
updater.clear();
updater.stopPeriodicUpdate();
updater.enableNotificationQueue(true);
updater.startPeriodicUpdateBatch(
    [ new Windows.Foundation.Uri(feedUrlString) ],
    Windows.UI.Notifications.PeriodicUpdateRecurrence.halfHour
);

Answer 1

要在一次更新中更新多个切片大小，该更新的 XML 负载必须包含每个切片大小的单独元素。

您可以在 SDK 中的 App tiles and badges sample 中看到这一点。例如，场景 1 演示了如何使用 (a) C# NotificationExtensions 库、(b) 将 XML 构建为字符串以及 (c) 使用 getTemplateContent 来执行此操作。其中一种方法应该适合您。

举一个案例 (a) 的例子，下面是场景 1 中的代码，其中还包含解释更多内容的注释：

// This sample application supports all four tile sizes – small (Square70x70), medium (Square150x150), wide (Wide310x150) and large (Square310x310).
// This means that the user may have resized their tile to any of these four sizes for their custom Start screen layout.
// Because an app has no way of knowing what size the user resized their app tile to, an app should include template bindings
// for each supported tile sizes in their notifications. The only exception is the small (Square70x70) tile size because this size
// does not support live tile notifications, which is why there are no Square70x70 tile templates.
// We assemble one notification with three template bindings by including the content for each smaller
// tile in the next size up. Square310x310 includes Wide310x150, which includes Square150x150.
// If we leave off the content for a tile size which the application supports, the user will not see the
// notification if the tile is set to that size.

// Create a notification for the Square310x310 tile using one of the available templates for the size.
var tileContent = NotificationsExtensions.TileContent.TileContentFactory.createTileSquare310x310Text09();
tileContent.textHeadingWrap.text = "Hello World! My very own tile notification";

// Create a notification for the Wide310x150 tile using one of the available templates for the size.
var wide310x150Content = NotificationsExtensions.TileContent.TileContentFactory.createTileWide310x150Text03();
wide310x150Content.textHeadingWrap.text = "Hello World! My very own tile notification";

// Create a notification for the Square150x150 tile using one of the available templates for the size.
var square150x150Content = NotificationsExtensions.TileContent.TileContentFactory.createTileSquare150x150Text04();
square150x150Content.textBodyWrap.text = "Hello World! My very own tile notification";

// Attach the Square150x150 template to the Wide310x150 template.
wide310x150Content.square150x150Content = square150x150Content;

// Attach the Wide310x150 template to the Square310x310 template.
tileContent.wide310x150Content = wide310x150Content;

// Send the notification to the application’s tile.
Windows.UI.Notifications.TileUpdateManager.createTileUpdaterForApplication().update(tileContent.createNotification());