Hello. New developer here. I have the following code:
func downloadItems() {
let url: URL = URL(string: urlPath)!
var session: URLSession!
let configuration = URLSessionConfiguration.default
session = URLSession(configuration: configuration, delegate: self, delegateQueue: nil)
let task = session.dataTask(with: url as URL)
task.resume()
}
func URLSession(session: URLSession, dataTask: URLSessionDataTask, didReceiveData data: NSData) {
self.data.append(data as Data);
}
func URLSession(session: URLSession, task: URLSessionTask, didCompleteWithError error: NSError?) {
if error != nil {
print("Failed to download data")
}else {
print("Data downloaded")
self.parseJSON()
}
}
func parseJSON() {
var jsonResult: NSMutableArray = NSMutableArray()
do{
jsonResult = try JSONSerialization.jsonObject(with: self.data as Data, options:JSONSerialization.ReadingOptions.allowFragments) as! NSMutableArray
} catch let error as NSError {
print(error)
}
var jsonElement: NSDictionary = NSDictionary()
let locations: NSMutableArray = NSMutableArray()
for var i in 0 ..< jsonResult.count
{
jsonElement = jsonResult[i] as! NSDictionary
let location = LocationModel()
if let name = jsonElement["Name"] as? String,
let address = jsonElement["Address"] as? String,
let latitude = jsonElement["Latitude"] as? String,
let longitude = jsonElement["Longitude"] as? String
{
location.name = name
location.address = address
location.latitude = latitude
location.longitude = longitude
}
locations.add(location)
}
DispatchQueue.main.async(execute: { () -> Void in
self.delegate.itemsDownloaded(items: locations)
})
}Swift is giving me this error: 'URLSession' produces '()', not the expected contextual result type 'URLSession!' on line 7. I'm not quite sure how to fix it, but I think it is some sort of syntax error with Swift 3.
