Creates a download task to resume a previously canceled or failed download.
- iOS 7.0+
- macOS 10.9+
- tvOS 9.0+
- watchOS 2.0+
A data object that provides the data necessary to resume a download.
The new session download task.
After you create the task, you must start it by calling its
This method is equivalent to the
downloadTask(withResumeData:completionHandler:) with a
nil completion handler. For detailed usage information, including ways to obtain a resume data object, see that method.
Adding Download Tasks to a Session