Getting errors for conversion NSURLSession to URLSession in Swift 3 - swift

Question

I tried convert the below code on Swift 3:
session.dataTaskWithURL(url! as URL, completionHandler: { (data : NSData?, response : URLResponse?, error : NSError?) -> Void in
if error != nil {
callback(items: nil, errorDescription: error!.localizedDescription, placesDetail: [])
}
if let statusCode = response as? NSHTTPURLResponse {
if statusCode.statusCode != 200 {
callback(items: nil, errorDescription: "Could not continue. HTTP Status Code was \(statusCode)", placesDetail: [])
}
}
NSOperationQueue.mainQueue().addOperationWithBlock({ () -> Void in
callback(items: GooglePlaces.parseFromData(data!), errorDescription: nil, placesDetail: GooglePlaces.arrayPlaces(data!))
})
}).resume()
So I do it:
session.dataTask(with: url!) { (data, response, error) -> Void in
if error != nil {
callback(items: nil, errorDescription: error!.localizedDescription, placesDetail: [])
}
if let statusCode = response as? NSHTTPURLResponse {
if statusCode.statusCode != 200 {
callback(items: nil, errorDescription: "Could not continue. HTTP Status Code was \(statusCode)", placesDetail: [])
}
}
OperationQueue.main.addOperation {
callback(items: GooglePlaces.parseFromData(data!), errorDescription: nil, placesDetail: GooglePlaces.arrayPlaces(data!))
}
}
But Have this error:
Ambiguous reference to member 'dataTask(with:completionHandler:)'
Why this error?

Answer 1

You are getting this error because in Swift 3 they have used all the API with URL not NSURL, so simply create the object of URL instead of NSURL and pass as first argument of dataTask(with:completionHandler:).
let url = URL(string: stringURL)
//Now this will works for you
session.dataTask(with: url!) { (data, response, error) -> Void in
For more details on this check URLSession documentations.
Note: You can also use.
dataTask(with request: URLRequest, completionHandler: #escaping (Data?, URLResponse?, Error?) -> Void) -> URLSessionDataTask
But for this you need to create URLRequest object not NSURLRequest.

Answer 2

You need to change only in Swift 3
session.dataTask(with: url!) { (data, response, error) -> Void in
to
session.dataTask(with: url as URLRequest) {
data, response, error in
Try this below code for URLSession in Swift 3
//MARK:- Parsing API here
public static func getparseMyApi(_ input: String, action:String, completion: #escaping (_ result: String, _ error: NSError?) -> Void) {
//Main API here
let is_URL: String = "http://yourURLhere.com"
let lobj_Request = NSMutableURLRequest(url: URL(string: is_URL)!)
let session = URLSession.shared
lobj_Request.httpMethod = "POST"
lobj_Request.httpBody = input.data(using: String.Encoding.utf8)
//lobj_Request.addValue("www.cgsapi.com", forHTTPHeaderField: "Host")
lobj_Request.addValue("text/xml; charset=utf-8", forHTTPHeaderField: "Content-Type")
lobj_Request.addValue(String(input.characters.count), forHTTPHeaderField: "Content-Length")
lobj_Request.addValue("http://tempuri.org/IService/\(action)", forHTTPHeaderField: "SOAPAction")
let task = session.dataTask(with: lobj_Request as URLRequest) {
data, response, error in
print("Response: \(response)")
// Checking here Response
if response != nil {
let statusCode = (response as! HTTPURLResponse).statusCode
print("Success: \(statusCode)")
// Checking here Response Status
if statusCode == 200 {
//Handling Data here
if data?.count > 0 {
//Do something here with data
let strData = NSString(data: data!, encoding: String.Encoding.utf8.rawValue)
// Finish here Process
completion(strData, nil)
}else{
//Data nil Condition here
completion("", error as NSError?)
}
//Handling Error here
if error != nil
{
print("Error: " + error.debugDescription)
completion("", error as NSError?)
}
}else{
//Invalid Status
print("Error: " + error.debugDescription)
completion("", error as NSError?)
}
}else{
//Response Nil then handle here
print("Error: " + error.debugDescription)
completion("", error as NSError?)
}
}
task.resume()
}
//MARK:- String To Dictionary Conversion
public static func convertStringToDictionary(_ json: String) -> [String: AnyObject]? {
if let data = json.data(using: String.Encoding.utf8) {
do{
let json = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions()) as? [String: AnyObject]
print(json)
return json
}catch {
print(error)
}
}
return nil
}