Class

URLSessionDataTask

A URL session task that returns downloaded data directly to the app in memory.

Overview

An URLSessionDataTask is a concrete subclass of URLSessionTask. The methods in the URLSessionDataTask class are documented in URLSessionTask.

A data task returns data directly to the app (in memory) as one or more NSData objects. When you use a data task:

For a detailed explanation of this process, read URL Session Programming Guide.

Relationships

Inherits From

Conforms To

See Also

Adding Data Tasks to a Session

func dataTask(with: URL)

Creates a task that retrieves the contents of the specified URL.

func dataTask(with: URL, completionHandler: (Data?, URLResponse?, Error?) -> Void)

Creates a task that retrieves the contents of the specified URL, then calls a handler upon completion.

func dataTask(with: URLRequest)

Creates a task that retrieves the contents of a URL based on the specified URL request object.

func dataTask(with: URLRequest, completionHandler: (Data?, URLResponse?, Error?) -> Void)

Creates a task that retrieves the contents of a URL based on the specified URL request object, and calls a handler upon completion.

protocol URLSessionDataDelegate

The NSURLSessionDataDelegate protocol defines the methods that a delegate of an URLSession object can implement to handle task-level events specific to data tasks and upload tasks.