获取音乐库文件

Question

试图在windows应用程序8.1上超量音乐文件夹，但得到以下例外：

System.Reflection.TargetInvocationException未处理消息:System.Reflection.TargetInvocationException类型的未处理异常发生在System.Windows.ni.dll附加信息中:调用的目标引发了异常。

下面是代码:调用

try
{
    GetFiles();
}
catch (Exception ex)
{
    Debug.WriteLine(ex.Message);
}

private async void GetFiles()
{
    StorageFolder folder = KnownFolders.MusicLibrary;
    IReadOnlyList<StorageFile> listOfFiles;
    if (folder!=null)
    {
        listOfFiles =await folder.GetFilesAsync(); //this line casuing Debugger.break();
    }
}

Answer 1

在package.appmanifest文件中添加音乐库功能

那就试试这段代码。对我来说很管用

    StorageFolder folder = KnownFolders.MusicLibrary;
    if (folder!=null)
    {
       var songs = (await   folder.GetFilesAsync(Windows.Storage.Search.CommonFileQuery.OrderByName)).ToList();
    }

链接到示例代码

Answer 2

尝尝这个。

在Windows8.1通用上工作完美

            FileOpenPicker openPicker = new FileOpenPicker();
            openPicker.ViewMode = PickerViewMode.Thumbnail;
            openPicker.SuggestedStartLocation = PickerLocationId.MusicLibrary;
            openPicker.FileTypeFilter.Add(".mp3");
            openPicker.FileTypeFilter.Add(".wav");
            openPicker.FileTypeFilter.Add(".mp4");

            var file = await openPicker.PickSingleFileAsync();

            try
            {
                var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
                playbackElement3.SetSource(stream, file.ContentType);//Play Selected

                playbackElement3.Play();

            }
            catch (Exception ex)
            {

            }

然后尝试从源获取列表。