将 mp3 文件从独立存储复制到媒体库 windows phone 8

Question

我能够将媒体文件存储到独立存储中并能够检索它们。现在我想要的是在 phone 的音乐播放器中播放该文件，但音乐播放器显示 "no music found"。如何将我下载的独立存储中的 mp3 文件显示到媒体库？我正在使用此代码下载 mp3 文件。有什么方法可以将文件下载到可读存储，如（phone内存/内部存储/存储卡）？？？

  void imgDown_Tap(object sender, System.Windows.Input.GestureEventArgs e)
    {
        ToastPrompt toast = new ToastPrompt();
        toast.Foreground = new SolidColorBrush(Colors.Black);
        toast.FontSize = 20;
        toast.Background = new SolidColorBrush(Colors.Yellow);
        toast.Message = "Please wait";
        toast.Show();
try
        {
            //Create a webclient that'll handle your download
            WebClient client = new WebClient();
            //Run function when resource-read (OpenRead) operation is completed
            client.OpenReadCompleted += client_OpenReadCompleted;
            //Start download / open stream
            client.OpenReadAsync(new Uri(streamUrl));
}
        catch (Exception ex)
        {
            toast.Message = "Downloading error";
            toast.Show();
        }
    }
    async void client_OpenReadCompleted(object sender, 
OpenReadCompletedEventArgs e)
    {
        ToastPrompt toast = new ToastPrompt();
        toast.Foreground = new SolidColorBrush(Colors.Black);
        toast.FontSize = 20;
        toast.Background = new SolidColorBrush(Colors.Yellow);
        toast.Message = "Downloading starts";
        toast.Show();
        try
        {

            byte[] buffer = new byte[e.Result.Length];
            //Store bytes in buffer, so it can be saved later on
            await e.Result.ReadAsync(buffer, 0, buffer.Length);


            using (IsolatedStorageFile file 
            IsolatedStorageFile.GetUserStoreForApplication())
            {

                //Create file
                using (IsolatedStorageFileStream stream =
file.OpenFile(titleUrl+".mp3", FileMode.Create))
                {
                    //Write content stream to file
                    await stream.WriteAsync(buffer, 0, buffer.Length);
                }
               // StorageFolder local = 
Windows.Storage.ApplicationData.Current.LocalFolder;
                //StorageFile storedFile = await local.GetFileAsync(titleUrl + 
".mp3");

                toast.Message = "Downloading complete";
                toast.Show();
        }
        catch (Exception ex)
        {

            toast.Message = "We could not finish your download. Error ";
            toast.Show();
        }

Answer 1

看来您需要使用 MediaLibraryExtensions.SaveSong 方法（参见 https://msdn.microsoft.com/library/microsoft.xna.framework.media.PhoneExtensions.medialibraryextensions.savesong(v=xnagamestudio.42).aspx）

您需要将 ID_CAP_MEDIALIB_AUDIO 功能添加到您的应用，并获取独立存储上文件的 URI 以传递给该方法。

在 MSDN 上有一些关于 Data for Windows Phone 的更多信息。

将 mp3 文件从独立存储复制到媒体库 windows phone 8

Copy mp3 files from Isolated storage to media library in windows phone 8

c#

isolatedstorage

windows-phone-8.1