NSURLSessionDataDelegate method didReceiveData and others are not called
I am having a problem that didReceiveData and didCompleteWithError are not called. Here is my code :
class LoginViewController: UIViewController, NSURLSessionDataDelegate, NSURLSessionDelegate, NSURLSessionTaskDelegate {
.
.
.
}
@IBAction func loginAction(sender: AnyObject) {
var sessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration()
var session = NSURLSession(configuration: sessionConfiguration, delegate: self, delegateQueue:nil)
let postParams = "email="+"[email protected]&password="+"abcd"
let url = NSURL(string:"http://myurl.com/api/v1/user/login")
let request = NSMutableURLRequest(URL: url!)
request.HTTPMethod = "POST"
request.HTTPBody = postParams.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
let task = session.dataTaskWithRequest(request)
task.resume()
}
These are delegates I implemented
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
}
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData data: NSData) {
}
func URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError error: NSError?) {
}
Here I watched with break points
didReceiveResponse is called but other two are not getting called.
Please help !
Answer
Implement the completion handler in your delegate method
func URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveResponse response: NSURLResponse, completionHandler: (NSURLSessionResponseDisposition) -> Void) {
completionHandler(NSURLSessionResponseDisposition.Allow) //.Cancel,If you want to stop the download
}