c# – BackgroundDownloader不适用于Windows 10移动UWP？

概述我正在创建一个 Windows 10 UWP应用程序,其中涉及BackgroundDownloader,这只适用于桌面而不是手机. 码： var dl = new BackgroundDownloader(); dl.CostPolicy = BackgroundTransferCostPolicy.Always; file = await localSoundsFolder.Cr 我正在创建一个 Windows 10 UWP应用程序,其中涉及BackgroundDownloader,这只适用于桌面而不是手机.

码：

var dl = new BackgroundDownloader();    dl.CostPolicy = BackgroundTransferCostPolicy.Always;    file = await localSoundsFolder.CreatefileAsync(name,CreationCollisionoption.ReplaceExisting);    if (file != null)    {        var d = dl.CreateDownload(new Uri(uriTodownloadFrom,UriKind.relativeOrabsolute),file);        d.Priority = BackgroundTransferPriority.High;        var progressCallback = new Progress<DownloadOperation>(x => DownloadProgress(x,sc));         try        {            await d.StartAsync().AsTask(cancellationToken.Token,progressCallback);            //After this line it doesn't progress!            CancellationTokenSource token = Utility.cancellationList[sc];            if (token != null)            {                token.Cancel();                Utility.cancellationList.Remove(sc);                DeBUG.Writeline("The sc has been removed from the download List");            }        }        catch        {            return;        }    }private static voID DownloadProgress(DownloadOperation download,SoundClass sc){    DeBUG.Writeline("Callback");    var value = download.Progress.BytesReceived * 100 / download.Progress.TotalBytesToReceive;    DeBUG.Writeline("The bytesReceived is {0} and total bytes is {1}",download.Progress.BytesReceived.ToString(),download.Progress.TotalBytesToReceive.ToString());    new System.Threading.ManualresetEvent(false).WaitOne(10);    sc.downloadProgress = value;    if (download.Progress.Status == BackgroundTransferStatus.Completed || value >= 100)    {        DeBUG.Writeline("DONE donwloading the file {0}",download.Resultfile.name);        DeBUG.Writeline("The file name happened to be to be added was " + download.Resultfile.name);        string filename = download.Resultfile.name;    }}

行等待d.StartAsync().AsTask(cancellationToken.Token,progressCallback);该计划不进行.而且也没有错误.这不仅适用于手机在桌面上完美运行！我错过了什么？

解决方法 BackgroundDownloader和我认为windows UWP中的所有BackgroundTasks都难以使用它们. 您必须首先在当前解决方案中创建一个新的解决方案作为windows运行时组件. 之后,您必须通过Package.AppxManifest链接它. 呃,不要忘记将运行时组件作为主项目的参考. 如果你做这些事情,希望它必须是有效的.但请确保您有一个RuntimeComponent并将其链接到您的项目中 总结

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