ios - Instance variable NSArray not updated correctly in Swift 2 - xCode 7.2 -

my message object has to, , content variable. i'm creating page display tableview unique conversation history. meaning names , profile pictures of people exchanged messages with. made nsarray variable append data in loaddata function display them on table. parse query returns 2 objects, when print resultdata array count prints 0 , reloaddata of course doesn't work. however, adding print statement line after append result object array in loaddata() function, works , prints correctly twice means nsarray not updating. knows why?

this code :

import foundation import uikit import parse  class messagescontroller: uiviewcontroller, uitableviewdatasource, uitableviewdelegate{       @iboutlet weak var loadingindicator: uiactivityindicatorview!      @iboutlet var tableview: uitableview!      var resultdata:nsmutablearray = nsmutablearray()     var users = [string]()      func loaddata(){           loadingindicator.hidden = false         loadingindicator.startanimating()          resultdata.removeallobjects()          var counter = 0         let user = pfuser.currentuser()?.objectid         let checkconversationspredicate = nspredicate(format: "(to = '\(user!)') or (from = '\(user!)')")         let checkconversationsquery = pfquery(classname: "messages", predicate: checkconversationspredicate)         checkconversationsquery.findobjectsinbackgroundwithblock { (objects, error) -> void in             if let objects = objects {                 object in objects {                     if (object.valueforkey("to") as? string) == user {                         //check if in list yet. if not, add him.                         var isduplicate = false                         let = object.valueforkey("from") as! string                         1 in self.users {                             if 1 == {                                 isduplicate = true                             }                         }                          //if it's not duplicate add our array of users                         if !isduplicate                         {                             let userquery = pfuser.query()                             userquery?.wherekey("objectid", equalto: object["from"] as! string)                             userquery?.findobjectsinbackgroundwithblock({ (users, error ) -> void in                                 if let users = users {                                      user in users{                                         let followed = user as! pfuser                                         self.resultdata.addobject(followed)                                         self.users.append(followed.objectid!)                                         counter++                                      }                                 }                               })                          }                     }                     else {                         //check if in list yet, if not add him.                         var isduplicate = false                         let = object.valueforkey("to") as! string                         1 in self.users {                             if 1 == {                                 isduplicate = true                             }                         }                          //if it's not duplicate add our array of users                         if !isduplicate                         {                             let userquery = pfuser.query()                             userquery?.wherekey("objectid", equalto: object["to"] as! string)                             userquery?.findobjectsinbackgroundwithblock({ (users, error ) -> void in                                 if let users = users {                                      user in users{                                         let followed = user as! pfuser                                         self.resultdata.addobject(followed)                                         self.users.append(followed.objectid!)                                         counter++                                      }                                 }                               })                          }                      }                  }                   //reload data                     print(self.resultdata.count)                     print(counter)                     let array:nsarray = self.resultdata.reverseobjectenumerator().allobjects                     self.resultdata = nsmutablearray(array: array)                     self.tableview.reloaddata()              }               if counter == 0 {                 //handle no results             }         }          loadingindicator.hidden = true         loadingindicator.stopanimating()         }        override func viewdidload() {         super.viewdidload()       }        override func viewdidappear(animated: bool) {          self.loaddata()     }      override func didreceivememorywarning() {         super.didreceivememorywarning()         // dispose of resources can recreated.     }       func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {            }       func tableview(tableview: uitableview, numberofrowsinsection section: int) -> int {          return resultdata.count     }      func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {           let cell:conversationcell = tableview.dequeuereusablecellwithidentifier("conversationcell", forindexpath: indexpath) as! conversationcell         let user:pfuser = self.resultdata.objectatindex(indexpath.row) as! pfuser          cell.profileid = user.objectid!            let name = (user.objectforkey("firstname") as! string) + " " + (user.objectforkey("lastname") as! string)         cell.name.text = name          if user.objectforkey("profilepicture") != nil {             if let profilepicture = user.objectforkey("profilepicture") as? pffile {                 profilepicture.getdatainbackgroundwithblock({ (data, error) -> void in                     if error == nil {                         let profileimage = uiimage(data: data!)                         cell.profilepicture.image = profileimage?.rounded?.circle                     }                 })             }         }         else{             cell.profilepicture.image = uiimage(named: "profile_picture_yellow.png")!.rounded?.circle         }              return cell     }       @ibaction func backbuttonpressed(sender: anyobject) {         self.dismissviewcontrolleranimated(true, completion: {});     }  } 

the problem findobjectsinbackgroundwithblock updating array after reloaded user data, changed

do{                                 let users = try userquery?.findobjects()                                 user in users!{                                     let followed = user as! pfuser                                     self.resultdata.addobject(followed)                                     self.users.append(followed.objectid!)                                     counter++                                  }                             }                             catch let err{                                 print(err)                             }