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我有一个活瓷砖的问题。我会在动态磁贴中显示我的应用程序中生成声音的歌曲名称。我在 MainPage.xaml.cs 中使用过：

public MainPage()
    {
        InitializeComponent();
        // Application Tile is always the first Tile, even if it is not pinned to Start.
        ShellTile TileToFind = ShellTile.ActiveTiles.First();

        // Application should always be found
        if (TileToFind != null)
        {
            // if Count was not entered, then assume a value of 0

            // set the properties to update for the Application Tile
            // Empty strings for the text values and URIs will result in the property being cleared.
            StandardTileData NewTileData = new StandardTileData
            {
                Title = "MyNameApp",
                BackgroundImage = new Uri("Red.jpg", UriKind.Relative),

                BackTitle = "Zzz...",
                BackBackgroundImage = new Uri("Green.jpg", UriKind.Relative),
                BackContent = txtCurrentTrack.Text <<HERE MY PROBLEM
            };

            // Update the Application Tile
            TileToFind.Update(NewTileData);
        }


    }

在 MainPage.xaml 中：

<TextBlock x:Name="txtCurrentTrack" Height="75" HorizontalAlignment="Center" Margin="12,193,0,0" VerticalAlignment="Top" Width="438" TextWrapping="Wrap"/>

在应用程序的 MainPage 中，歌曲的标题出现，而不是在动态磁贴中不出现。你知道是什么问题吗？谢谢大家

编辑：

我在这里设置了 txtcurrentTrack.Text（在 MainPage.xaml.cs 中）：

void Instance_PlayStateChanged(object sender, EventArgs e)
    {
        switch (BackgroundAudioPlayer.Instance.PlayerState)
        {
            case PlayState.Playing:
                RelaxTB.Content = "pause";
                break;

            case PlayState.Paused:
            case PlayState.Stopped:
                RelaxTB.Content = "play";
                break;
        }
        if (null != BackgroundAudioPlayer.Instance.Track)
        {
            txtCurrentTrack.Text = BackgroundAudioPlayer.Instance.Track.Title;
        }
    }
    protected override void OnNavigatedTo(NavigationEventArgs e)
    {
        if (PlayState.Playing == BackgroundAudioPlayer.Instance.PlayerState)
        {
            RelaxTB.Content = "Pause";
            txtCurrentTrack.Text = BackgroundAudioPlayer.Instance.Track.Title;

        }
        else
        {
            RelaxTB.Content = "Play";
            txtCurrentTrack.Text = "";
        }
    }
4

1 回答 1

0

txtCurrentTrack 上的 Text 属性似乎没有在您更新磁贴数据时设置。因此，您只能将 BackContent 属性设置为 null。

You need to update the tile explicitly each time you change txtCurrentTrack.Text- 在 Instance_PlayStateChanged 和 OnNavigatedTo 方法中。

于 2012-08-09T19:56:45.613 回答