ios - tableview not refreshing by using notificationcentre and tableview.reloaddata() -

here code use refresh tableview when click delete button on custom tableview cell using notificationcenter , tableview.reloaddata(). have searched bunch of other codes , think code looks fine. don't know why doesn't refresh.

this tableview

override func viewdidload() {     super.viewdidload()     username = tempuser.username     self.resultsearchcontroller = ({         let controller = uisearchcontroller(searchresultscontroller: nil)         controller.searchresultsupdater = self         controller.dimsbackgroundduringpresentation = false         controller.searchbar.sizetofit()         self.tableview.tableheaderview = controller.searchbar          return controller      })()     get{(value) in         self.values = value         ele in self.values{             if self.username != ele["username"] as! string{             }         }     }     self.tableview.reloaddata()     nsnotificationcenter.defaultcenter().addobserver(self, selector: #selector(serviceboard.methodhandlingthenotificationevent), name:"notificationidentifie‌​r", object: nil)  }  func methodhandlingthenotificationevent(){     tableview.reloaddata() } func tableview(tableview: uitableview, numberofrowsinsection section: int) -> int {     if (self.resultsearchcontroller.active && resultsearchcontroller.searchbar.text != "") {         return self.filteredtabledata.count     }     else {         return values.count     } } func tableview(tableview: uitableview, cellforrowatindexpath indexpath: nsindexpath) -> uitableviewcell {      let cell = tableview.dequeuereusablecellwithidentifier("cell", forindexpath: indexpath) as!postcell     let maindata = values[values.count-1-indexpath.row]      if (self.resultsearchcontroller.active && resultsearchcontroller.searchbar.text != "") {           //            if (filteredtabledata[indexpath.row].rangeofstring("###") == nil){         cell.postimg.image = uiimage(named:"tile_services")         cell.title.text = filteredtabledata[indexpath.row]         cell.category.text = "services"         var price = string()         in values{             if (i["title"] as? string)! == filteredtabledata[indexpath.row]{                 price = (i["price"] as? string)!                 cell.categories = "services"                 cell.username = i["username"] as! string                 cell.prices = i["price"] as! string                 cell.notes = i["notes"] as! string                 cell.school = i["school"] as! string             }         }         cell.price.text = price           return cell     }     else {         if maindata["username"] as! string != username && username != "admin"{             cell.deletebtn.hidden = true         }         else{             cell.categories = "services"             cell.username = maindata["username"] as! string             cell.prices = maindata["price"] as! string             cell.notes = maindata["notes"] as! string             cell.school = maindata["school"] as! string         }          cell.postimg.image = uiimage(named:"tile_services")         cell.title.text = maindata["title"] as? string         cell.category.text = "services"         cell.price.text = maindata["price"] as? string          return cell     } } func tableview(tableview: uitableview, didselectrowatindexpath indexpath: nsindexpath) {     let popovervc = uistoryboard(name: "main", bundle: nil).instantiateviewcontrollerwithidentifier("showpostt") as! showpostt     self.addchildviewcontroller(popovervc)     popovervc.view.frame = self.view.frame     self.view.addsubview(popovervc.view)     popovervc.didmovetoparentviewcontroller(self)     if (self.resultsearchcontroller.active && resultsearchcontroller.searchbar.text != "") {         in values{             if (i["title"] as? string)! == filteredtabledata[indexpath.row]{                 popovervc.type.text = "service"                 popovervc.typeimg.image = uiimage(named:"tile_services")                 popovervc.item.text = "service: \(i["title"] as! string)"                 popovervc.price.text = "price: \(i["price"] as! string)"                 popovervc.notes.text = "notes: \(i["notes"] as! string)"                 popovervc.comments.text = i["comments"] as? string                 popovervc.postuser.text = i["username"] as! string                 popovervc.notesstr = i["notes"] as! string                 popovervc.category = "service"                 popovervc.pricesstr = i["price"] as! string                 if username == popovervc.postuser.text!{                     popovervc.composebtn.hidden = true                 }             }         }     }     else{         let maindata = values[values.count-1-indexpath.row]         popovervc.type.text = "service"         popovervc.typeimg.image = uiimage(named:"tile_services")         popovervc.item.text = "service: \(maindata["title"] as! string)"         popovervc.price.text = "price: \(maindata["price"] as! string)"         popovervc.notes.text = "notes: \(maindata["notes"] as! string)"         popovervc.comments.text = maindata["comments"] as? string         popovervc.postuser.text = maindata["username"] as! string         popovervc.notesstr = maindata["notes"] as! string         popovervc.category = "service"         popovervc.pricesstr = maindata["price"] as! string          if username == popovervc.postuser.text!{             popovervc.composebtn.hidden = true         }     }  } 

and custom tableview cell

class postcell: uitableviewcell{  @iboutlet weak var deletebtn: uibutton! @iboutlet weak var postimg: uiimageview! @iboutlet weak var category: uilabel! @iboutlet weak var location: uilabel! @iboutlet weak var title: uilabel! @iboutlet weak var price: uilabel! var prices = string() var notes = string() var comments = string() var locations = string() var categories = string() var school = string() var username = string() var date = string()   @ibaction func deleteaction(sender: anyobject) {     let request = nsmutableurlrequest(url: nsurl(string: "http://www.percyteng.com/orbit/deletepost.php")!)     request.httpmethod = "post"     let poststring = "name=\(username)&location=\(locations)&price=\(prices)&notes=\(notes)&school=\(school)&category=\(categories)"     request.httpbody = poststring.datausingencoding(nsutf8stringencoding)      let task = nsurlsession.sharedsession().datataskwithrequest(request) {         data, response, error in          if error != nil {             print("error=\(error)")             return         }          print("response = \(response)")          let responsestring = nsstring(data: data!, encoding: nsutf8stringencoding)         print("responsestring = \(responsestring)")     }     task.resume();           nsnotificationcenter.defaultcenter().postnotificationname("notificationidentifie‌​r", object: nil)   }  override func awakefromnib() {     super.awakefromnib() } override func setselected(selected: bool, animated: bool) {     super.setselected(selected, animated:animated) } } 

it looks not updating values property when click on "delete" button.

func methodhandlingthenotificationevent(){     // have update `values` array doesn't contain value you've removed.     tableview.reloaddata() }