plaudev

// this log is from the run after recompiling by simply clicking the "play" button on xcode

--- playAction
AVAudioSession Category Playback OK
AVAudioSession is inactive
AVAudioSession is Active
--- audioPlayerBeginInterruption
audioPlayer.playing false
AVAudioSession is inactive
AVAudioSession is inactive

plaudev

// does NOT resume play at all
// what's different = no .MixWithOthers at all

/* console output:
  AVAudioSession Category Playback OK
  AVAudioSession is Active
  handleInterruption
  began
  audioPlayer.playing false
  AVAudioSession is inactive

plaudev

// does NOT resume play at all
// what's different = .MixWithOthers set with AVAudioSessionCategoryPlayback

/* console output:
 AVAudioSession Category Playback OK
 AVAudioSession is Active
 handleInterruption
 began
 audioPlayer.playing false
 AVAudioSession is inactive

plaudev

// does NOT resume play at all
// what's different = .MixWithOthers not set with theSession

/* console output:
  AVAudioSession Category Playback OK
  AVAudioSession is Active
  handleInterruption
  began
  audioPlayer.playing false
  AVAudioSession is inactive

plaudev

// this version resumes play the first time alarm interrupts but the second time will not resume play - sometimes it does not resume play even once
// what's different = using theSession for all the AVAudioSession.sharedInstance() calls

/* console output:
  AVAudioSession Category Playback OK
  AVAudioSession is Active
  handleInterruption
  began
  audioPlayer.playing false
  AVAudioSession is inactive

plaudev

// this version DOES resume play properly multiple times
// what's different = theSession is used only for setting up .MixWithOthers independently of the AVAudioSession.sharedInstance() used to set up background play (I'm afraid I am unable to explain why this works)

/* console output:
  AVAudioSession Category Playback OK
  AVAudioSession is Active
  handleInterruption
  began
  audioPlayer.playing false
  handleInterruption

plaudev

import UIKit
import AVFoundation

class ViewController: UIViewController {
    
    var player = AVAudioPlayer()
    
    let audioPath = NSBundle.mainBundle().pathForResource("rachmaninov-romance-sixhands-alianello", ofType: "mp3")!
    
    /*