How to find size of a file before downloading it in iOS 7?

Question

Wanted to find size of a file on some server before downloading it in iOS 7... I have a method of NSURLConnectionDelegate but it is deprecated after iOS 4.3

Here was

Answer 1

For Swift use these steps,

Step 1: Use NSURLConnectionDataDelegate.

class ViewController: UIViewController,NSURLConnectionDataDelegate {

Step 2: Create request for connection.

var request:NSMutableURLRequest = NSMutableURLRequest(URL: NSURL(string: "http://www.twitter.com")!)

// Use **HEAD** request to get http header information.

request.HTTPMethod = "HEAD"

Step 3: Create connection.

var connection:NSURLConnection = NSURLConnection(request: request, delegate: self)!

Step 4: Use delegate method of NSURLConnectionDataDelegate

func connection(connection: NSURLConnection, didReceiveResponse response: NSURLResponse)
{
    var size = response.expectedContentLength
    println("size : \(size)")
}

Here is full code...

import UIKit

class ViewController: UIViewController,NSURLConnectionDataDelegate {

override func viewDidLoad() {
    super.viewDidLoad()


    var request:NSMutableURLRequest = NSMutableURLRequest(URL: NSURL(string: "http://www.twitter.com")!)
    request.HTTPMethod = "HEAD"

    var connection:NSURLConnection = NSURLConnection(request: request, delegate: self)!

}

func connection(connection: NSURLConnection, didReceiveResponse response: NSURLResponse)
{
    var size = response.expectedContentLength
    println("size : \(size)")
}
}