iphone - amazon ads for swift not working in ios -

i trying implement amazon ads ios using swift.the code provided amazon in objective c , have tried mirroring swift failed so.the following methods "adviewdidload" , "adviewdidfailtoload" working in objective c have stopped working in swift,but function "viewcontrollerforpresentingmodalview" working across both languages.here snippet of code

@iboutlet weak var amazonadview: amazonadview!

override func viewdidload() {     super.viewdidload()     // additional setup after loading view, typically nib.     var option1 = amazonadoptions()     option1.istestrequest = false     amazonadview.delegate = self      self.amazonadview.loadad(option1)  }  func viewcontrollerforpresentingmodalview() -> uiviewcontroller {     println("........here.......") return self; }    func adviewdidload(view : amazonadview) {      println("........here.1......") nslog("successfully loaded ad"); }   // @optional func adviewdidfailtoload(view :amazonadview , witherror: amazonaderror ) { nslog("ad failed load. error code ") } 

thanks

i've been having similar struggles , confused whether amazon, or me. implemented follows , ad appears sometimes, i'm not sure causes not appear @ times, , not trip delegate functions should when fails. had working setup several days, , flipped flag production, never showed again. i'm not sure if has it.

func setupamazonad(){     if(testamazonad != nil){         testamazonad?.removefromsuperview()     }     testamazonad = amazonadview(adsize: amazonadsize_320x50)      var adoptions = amazonadoptions()     // during development, must tell framework     // app not production version     adoptions.istestrequest = true     testamazonad!.delegate = self     self.view.addsubview(self.testamazonad!)     self.view.bringsubviewtofront(self.testamazonad!) }  func viewcontrollerforpresentingmodalview() -> uiviewcontroller! {     return self }  func adviewwillexpand(view: amazonadview!) {     println("will present modal view ad. time pause other activities.") }  func adviewdidcollapse(view: amazonadview!) {     println("modal view has been dismissed, time resume paused activities.") }  func adviewdidload(view: amazonadview!) {     println("successfully loaded ad") }  func adviewdidfailtoload(view: amazonadview, error:amazonaderror){     println("failed load") }