How can I display all files in Music Library on startup of app in UWP

Question

I am trying to display all music files (Mp3) that is in the Music folder in Windows IoT Core on startup of the app in my ListView.

What I have at the moment is:

public MainPage()
    {
        this.InitializeComponent();
        InitGPIO();
        ListfilesAsync();
        Unloaded += MainPage_Unloaded;

    }

 private async Task ListfilesAsync()
    {
        var folderPicker = new Windows.Storage.Pickers.FolderPicker();
        folderPicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.MusicLibrary;
        folderPicker.FileTypeFilter.Add("*.mp3");

        StorageFolder folder = await folderPicker.PickSingleFolderAsync();

        List<string> fileTypeFilter = new List<string>();
        fileTypeFilter.Add(".mp3");

        if (folder != null)
        {
            QueryOptions queryOptions = new QueryOptions(CommonFileQuery.OrderByDate, fileTypeFilter);
            StorageFileQueryResult results = folder.CreateFileQueryWithOptions(queryOptions);
            IReadOnlyList<StorageFile> sortedFiles = await results.GetFilesAsync();
            foreach (StorageFile item in sortedFiles)
            {
                AudioFilesLV.Items.Add(item.Path.ToString());
            }
        }
    }

The app starts with no errors but there is nothing displayed in the ListView?

Not sure if it is being initialized correctly or there is fault with my code?

Thanks

Answer 1

FolderPicker and FolderOpenPicker can not work on Windows IoT Core. You can use KnownFolders.MusicLibrary to list the file in music library.

            var files = await Windows.Storage.KnownFolders.MusicLibrary.GetFilesAsync();
            foreach (StorageFile item in files)
            {
                AudioFilesLV.Items.Add(item.Path.ToString());
            }

Please note that, you need to specify the Music Library capability in Package.appxmanifest.

  <Capabilities>
    <uap:Capability Name="musicLibrary"/>
  </Capabilities>