ios - AVAudioPlayer not responding in the background -


i'm playing audio in background when app receive voip notification. avaudioplayer acting weird , play audio , not without error. thats how play:

func playaudio() {     // set sound file name & extension     let alertsound = nsurl(fileurlwithpath: nsbundle.mainbundle().pathforresource("testaudio", oftype: "wav")!)       // play sound     {         try audioplayer = avaudioplayer(contentsofurl: alertsound)         audioplayer.delegate = self         if (audioplayer.preparetoplay()) {             audioplayer.play()         }         else {nslog("there error")}      } catch {         nslog("there \(error)")     } }

i initialize avaudiosession in appdelegate application function:

        {         audioplayer = avaudioplayer()         audiosession = avaudiosession()                     try audiosession.setcategory(avaudiosessioncategoryplayandrecord, withoptions: [avaudiosessioncategoryoptions.mixwithothers])         try audiosession.setactive(true)         try audiosession.overrideoutputaudioport(avaudiosessionportoverride.speaker)     }     catch {         nslog("there \(error)")     }

and of course var audioplayer: avaudioplayer! class verb

its working first minute or 2 , avaudioplayer stop responding without error. try use avaudioplayerdelegate receive events, nothing happen.

can explain behavior? bug in ios? or i'm doing somthing wrong? tested on ios 9.2, iphone 6 device, xcode 7.2.

thanks.


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