WP8.1 和UWP 如何使用下载网页的上的音频 并保存

WP8.1 和UWP 如何使用下载网页的上的音频 并保存

WP8.1：

 private   async   Task<StorageFile>  GetVoiceData()

        {

            HttpClient httpclient = new HttpClient();

            var GetData = await httpclient.GetStreamAsync(new Uri("http://dx.sc.chinaz.com/Files/DownLoad/sound1/201207/1771.mp3"));

            var file = await ApplicationData.Current.LocalCacheFolder.CreateFileAsync("1771.mp3", CreationCollisionOption.ReplaceExisting);

            using (var stream = await file.OpenStreamForWriteAsync())

            {

                 await GetData.CopyToAsync(stream);//将获取的HttpClient的Stream流复制到文件的stream流

                 await stream.FlushAsync();//异步刷新

            }             return This_Voice_files;

        }

    }

UWP：

public async Task<StorageFile> Load()

{

    try

    {

        var httpClient = new HttpClient();

        var buffer = await httpClient.GetBufferAsync(new Uri("http://dx.sc.chinaz.com/Files/DownLoad/sound1/201207/1771.mp3"));

        if (buffer != null && buffer.Length > 0u)

        {

            var file = await ApplicationData.Current.LocalCacheFolder.CreateFileAsync("1771.mp3", CreationCollisionOption.ReplaceExisting);

            using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))

            {

                await stream.WriteAsync(buffer);

                await stream.FlushAsync();

            }

            return file;

        }

    }

    catch { }

    return null;

}

C#:

HttpClient client = new HttpClient();

            using (var musicStream = client.GetStreamAsync("http://dx.sc.chinaz.com/Files/DownLoad/sound1/201207/1771.mp3").Result)

            {

                int currentPos = ;

                byte[] tempbyte = new byte[];

                MemoryStream ms = new MemoryStream();

                //当遇到0，表示读完了

                do

                {

                    currentPos = musicStream.Read(tempbyte, , );

                    ms.Write(tempbyte, , currentPos);

                } while (currentPos != );

                File.WriteAllBytes("c:\\test.mp3", ms.ToArray());

                System.Console.WriteLine("OK");

            }