ios - Audio not playing in simulator -

i have 3 buttons , i'm trying sound play each button.

the sounds don't play on simulator wondering going wrong in code.

import uikit import avfoundation  class viewcontroller: uiviewcontroller {       override func viewdidload() {          super.viewdidload()      }       @ibaction func mmm_sound(sender: uibutton) {          playsound("mmm")      }       @ibaction func aww_sound(sender: uibutton) {          playsound("aww")       }      @ibaction func maniacal_sound(sender: uibutton) {          playsound("hah")      }        //sound function     func playsound(soundname: string)     {           let sound = nsurl(fileurlwithpath:nsbundle.mainbundle().pathforresource(soundname, oftype: "wav")!)          do{              let audioplayer = try avaudioplayer(contentsofurl:sound)              audioplayer.preparetoplay()              audioplayer.play()          }catch {               print("error getting audio file")           }      }   } 

you should make avaudioplayer global variable local variable of 'avaudioplayer' deallocate before plays, code can

//at top var audioplayer = avaudioplayer()  func playsound(soundname: string)     {         let sound = nsurl(fileurlwithpath:nsbundle.mainbundle().pathforresource(soundname, oftype:"wav")!)         do{             audioplayer = try avaudioplayer(contentsofurl:sound)             audioplayer.preparetoplay()             audioplayer.play()         }catch {             print("error getting audio file")         }     }