Swift 3 URLSession shared Ambiguous reference to member dataTask with completionHandler error bug

Question

Hello I have working json parsing code for swift2 2 but when i use it for Swift 3 0 gives me that error     ViewController swift 132 31  Ambiguous reference to member  dataTask with completionHandler      My codes here     let listUrlString     http   bla com batchSize     String batchSize      amp fromIndex     String fromIndex      let myUrl   URL string  listUrlString       let request   NSMutableURLRequest url myUrl        request httpMethod    GET        let task   URLSession shared   dataTask with  request            data  response  error in          if error    nil               print error  localizedDescription              DispatchQueue main sync execute                    AWLoader hide                               return                    do                let json   try JSONSerialization jsonObject with  data   options   mutableContainers  as  NSArray              if let parseJSON   json                    var items   self categoryList                  items append contentsOf  parseJSON as   String                    if self fromIndex  lt  items count                        self categoryList   items                     self fromIndex   items count                      DispatchQueue main async execute                             self categoriesTableView reloadData                            AWLoader hide                                            else if  self fromIndex    items count                         DispatchQueue main async execute                             AWLoader hide                                                                          catch               AWLoader hide               print error                        task resume     Thanks for ideas

User · Accepted Answer

The compiler is confused by the function signature. You can fix it like this:

let task = URLSession.shared.dataTask(with: request as URLRequest) {

But, note that we don't have to cast "request" as URLRequest in this signature if it was declared earlier as URLRequest instead of NSMutableURLRequest:

var request = URLRequest(url:myUrl!)

This is the automatic casting between NSMutableURLRequest and the new URLRequest that is failing and which forced us to do this casting here.

Swift 3 URLSession.shared() Ambiguous reference to member 'dataTask(with:completionHandler:) error (bug)

The Solution to Swift 3 URLSession.shared() Ambiguous reference to member 'dataTask(with:completionHandler:) error (bug) is

Most Viewed Questions: