I'm trying to cancel an asynchronous request if there is a problem with the internet connection.
var connection: NSURLConnection!
self.connection = NSURLConnection.sendAsynchronousRequest(request2, queue: NSOperationQueue.mainQueue())
{
(response, data, error) in ();
if(response != nil){
if let Data: AnyObject! ..... }
This is the code. I'm trying to cancel the request by:
self.connection.cancel()
but I have some errors : Cannot assing a value of type 'void' to a value of type NSURLConnection.
sendAsynchronousRequest
is a function that returns nothing, and yet you're assigning it to self.connection
.
You don't need an NSURLConnection
instance to send an asynchronous request--it is a class function, you pass it your NSURLRequest
, and a custom NSOperationQueue
or a completionHandler
, optionally.
Also, you can't really cancel a request made through sendSynchronous-
or sendAsynchronousRequest
. You will need to make an NSURLSessionTask
, to be used in combination with NSURLSession
. NSURLSessionTask
s have a cancel()
method.
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