urlsession，如何获得多个文件下载的整体进度

Question

Using a URLSessionDownloadTask. Is there any way to get the overall progress of a multiple files download using the delegate didwritedata? in a

I have the expected size of all files, now I need the totalbyteswritten for all current tasks and then all future tasks would be added to this "pool"..right now by default the totalbyteswritten are by task.

Using the task identifier maybe?

Answer 1

I'm assuming you're using a URLSessionDownloadTask . You should add that to your question.

If you have multiple download tasks running you should save them to a collection of some sort. A dictionary would work well. You will need to sum the total bytes written for each task into a total yourself.