摘要： 此示例显示了如何使用后台传输服务在后台下载文件，即使当应用程序不再运行在前台。通过BackgroundTransferRequest 实现上传下载// Create the new transfer request, passing in the URI of the file to // be transferred.BackgroundTransferRequest transferRequest = new BackgroundTransferRequest(transferUri);// Set the transfer method. GET and POST are support 阅读全文