14 Replies
      Latest reply on Nov 22, 2019 1:32 AM by jsyh
      adaiye Level 1 Level 1 (0 points)

        Our app use notification service extension to play custom audio. It works fine before iOS12.0(include 12.0).

        But when i upgrade to 12.1, and found it can't play custom audio in background.

         

        1. We found it report error when call [AVAudioSession setActive:true error:&err], the error info is

        Error Domain=NSOSStatusErrorDomain Code=561015905 "(null)"

        https://developer.apple.com/documentation/avfoundation/avaudiosession/errorcode/cannotstartplaying

         

        I'm sure our main app has the background mode property for audio.

         

        2. When we use AVAssetExportSession to export AVMutableComposition to output an new m4a file, it report error too.

        Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-16980), NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x10550bba0 {Error Domain=NSOSStatusErrorDomain Code=-16980 "(null)"}}

         

        3. If we use AVAudioPlayer to paly an mp3 file, it failed.

         

         

        Can anyone help me?