/// <summary>
/// バックグラウンドタスクが実行完了したときの処理.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private async void BackgroundTask_Completed(Windows.ApplicationModel.Background.BackgroundTaskRegistration sender, Windows.ApplicationModel.Background.BackgroundTaskCompletedEventArgs args)
{
// バックグラウンドタスク完了イベントはワーカースレッドで通知されるので
// UI threadで実行する必要あり
if (this.OnLaunchedDispatcher == null)
{
return;
}
await this.OnLaunchedDispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
if (Window.Current == null)
{
return;
}
var frame = Window.Current.Content as Frame;
if (frame == null)
{
return;
}
var page = frame.Content as LockscreenItemsPage;
if (page == null)
{
return;
}
page.BackgroundTask_Completed(sender, args);
});
}
async void task_Completed(Windows.ApplicationModel.Background.BackgroundTaskRegistration sender, Windows.ApplicationModel.Background.BackgroundTaskCompletedEventArgs args)
{
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
TaskCompleted = true;
Load();
});
}
async void task_Progress(Windows.ApplicationModel.Background.BackgroundTaskRegistration sender, Windows.ApplicationModel.Background.BackgroundTaskProgressEventArgs args)
{
await dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
TaskCompleted = false;
TaskProgress = args.Progress;
});
}
/// <summary>
/// バックグラウンドタスクが実行完了したときの処理.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
public async void BackgroundTask_Completed(Windows.ApplicationModel.Background.BackgroundTaskRegistration sender, Windows.ApplicationModel.Background.BackgroundTaskCompletedEventArgs args)
{
// バックグラウンドタスク完了イベントはワーカースレッドで通知されるので
// UI threadで実行する必要あり
await this.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Low,
() => { LoadCurrentLockscreenImageAsync(); });
}
private void BackGroundTask_Completed(Windows.ApplicationModel.Background.BackgroundTaskRegistration sender, Windows.ApplicationModel.Background.BackgroundTaskCompletedEventArgs args)
{
// UI updates should be performed asynchronously, to avoid holding up the UI thread
UpdateTile();
}