Global Variable

NSURLSessionDownloadTaskResumeData

A key in the error dictionary that provides resume data.

Declaration

let NSURLSessionDownloadTaskResumeData: String

Discussion

When a transfer error occurs or when you call the cancel(byProducingResumeData:) method, the delegate object or completion handler gets an NSError object. If the transfer is resumable, that error object’s userInfo dictionary contains a value for this key. To resume the transfer, your app can pass that value to the downloadTask(withResumeData:) or downloadTask(withResumeData:completionHandler:) method.

See Also

User Info Dictionary Keys

let NSURLErrorBackgroundTaskCancelledReasonKey: String

An NSNumber value indicating why a background task was cancelled. For a list of possible values, see NSURLSession-Specific NSError userInfo Dictionary Keys.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software