ios - Image url shows error while calling to display image in UITableview -

i have stored json image url in array while calling url shows error

model class

import foundation   class productdetails {   var productauthor: string!   var productprice: int!   var artimages: [artimage]! }  class artimage {   var imagepath: string!   var imgvideotype: int! } 

tableview controller storage variable

var globalarr = [productdetails]() 

parsing function

func parsejsondata(data: nsdata) -> [productdetails] {     var product_detail = [productdetails]()     {         let jsonresult = try nsjsonserialization.jsonobjectwithdata(data, options: nsjsonreadingoptions.mutablecontainers) as? nsdictionary          let jsonproductdetails = jsonresult?["data"] as! [anyobject]         //print("the json response is",jsonproductdetails)          jsonproductdetail in jsonproductdetails{             let productdetail = productdetails()            // let jsonproductimagedetails = jsonproductdetails["images"] as! [anyobject]              productdetail.productauthor = jsonproductdetail["first_name"]as! string             productdetail.productprice =  jsonproductdetail["prodprice"]as! int               // getting inside json             let jsonproductimagedetails = jsonproductdetail["images"] as! [anyobject]              var artimagesmodelarray  = [artimage]()             image in jsonproductimagedetails {                 let artimage = artimage();                 artimage.imagepath = image["imagepath"] as! string                 artimage.imgvideotype = image["imgvideotype"] as! int                 artimagesmodelarray.append(artimage)             }             productdetail.artimages = artimagesmodelarray;             product_detail.append(productdetail)                }          }      catch {         print (error)     }      return product_detail } 

tableview datasource

override func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {     let cellidentifier = "cell"     let cell = tableview.dequeuereusablecellwithidentifier(cellidentifier, forindexpath: indexpath) as! userhomescreentableviewcell      // configure cell...     cell.artsauthorname.text = globalarr[indexpath.row].productauthor     cell.pricelabel.text = "\(globalarr[indexpath.row].productprice)"       let productdetailsobject = globalarr[indexpath.row].artimages     print("@@@@@@@@@@@@@@@@@",productdetailsobject)       dispatch_async(dispatch_get_global_queue( dispatch_queue_priority_default, 0), {          if let url = (nsurl(string: self.globalarr[indexpath.row])) {  //the error comes here....in self.global array              if let data = nsdata(contentsofurl: url) {                 if let image = uiimage(data: data) {                     dispatch_async(dispatch_get_main_queue()) { () -> void in                         cell.artimageview.image = image                     }                 }             }         }     })        return cell } 

here have stored parse json , display details in tableview cell upto here works fine . call async way load images array shows error

any suggestion ..plz.. thank you

you need change way how you're taking image url productdetails. guess need use this:

 if let url = nsurl(string: self.globalarr[indexpath.row].artimages[imageindex].imagepath) { // code } 

because when perform

if let url = (nsurl(string: self.globalarr[indexpath.row])) 

you object of productdetails, not image url.