Can an audio session cause app delegate to crash during an interruption? - ios

Question

I am seeing a crash in AppDelegate. I believe it is related to a song ending just as I go to make an in-app purchase or possibly the sound effect that I play when an in-app purchase completes (sort of a coin sound), as it happens occasionally but not frequently.
The crash log (below below) points to this in particular as the last thing called before the crash:
4 SpriteKit 0x233882e3c -[SKSoundSource purgeCompletedBuffers] + 155
I handle stopping and starting audio with code as follows:
func applicationWillResignActive(_ application: UIApplication)
{
// Nil out the system clock variables
if GameData.sharedInstance.isValidSystemClock != nil && GameData.sharedInstance.isValidSystemClock!
{
GameData.sharedInstance.isValidSystemClock = nil
}
GameData.sharedInstance.currentServerTime = nil
// Capture the last time the user was in the app, so we can catch if they rewind their system clock while offline
GameData.sharedInstance.timeOfLastAppLaunch = CFAbsoluteTimeGetCurrent()
// Save game data to file
GameData.sharedInstance.saveGameToFile()
//schedule notifications for user to come back soon!
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "scheduleNotificationFreeChest"), object: nil)
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "scheduleNotificationReminders"), object: nil)
NotificationCenter.default.post(name: NSNotification.Name(rawValue: "scheduleNotificationLivesFull"), object: nil)
//pause background music if it's playing
if AssetsSounds.sharedInstance.bgmTitlePlayer?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmTitlePlayer?.pause()
needToPlayTitleMusic = true
}
//pause game music if it's playing
if AssetsSounds.sharedInstance.bgmGamePlayer?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmGamePlayer?.pause()
needToPlayGameMusic = true
}
if AssetsSounds.sharedInstance.bgmBonusLoop?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmBonusLoop?.pause()
needToPlayBonusLoop = true
}
if AssetsSounds.sharedInstance.bgmBonusLeadIn?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmBonusLeadIn?.pause()
needToPlayBonusLeadIn = true
}
if AssetsSounds.sharedInstance.bgmFiveMovesLeft?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmFiveMovesLeft?.pause()
needToPlayFiveMovesLeft = true
}
if AssetsSounds.sharedInstance.bgmRainWithBirds?.isPlaying ?? false
{
AssetsSounds.sharedInstance.bgmRainWithBirds?.pause()
needToPlayRainWithBirds = true
}
}
And, upon return from the interruption:
func applicationDidBecomeActive(_ application: UIApplication)
{
// Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
// kill notifications scheduled since user is back
UNUserNotificationCenter.current().removeAllPendingNotificationRequests()
// Clears app badge number; we put a 1 when we send a notification
UIApplication.shared.applicationIconBadgeNumber = 0
if AVAudioSession.sharedInstance().secondaryAudioShouldBeSilencedHint
{
AssetsSounds.sharedInstance.bgmGamePlayer?.stop()
AssetsSounds.sharedInstance.bgmGamePlayer = nil
needToPlayGameMusic = false
AssetsSounds.sharedInstance.bgmTitlePlayer?.stop()
AssetsSounds.sharedInstance.bgmTitlePlayer = nil
needToPlayTitleMusic = false
AssetsSounds.sharedInstance.bgmBonusLeadIn?.stop()
AssetsSounds.sharedInstance.bgmBonusLeadIn = nil
needToPlayBonusLeadIn = false
AssetsSounds.sharedInstance.bgmBonusLoop?.stop()
AssetsSounds.sharedInstance.bgmBonusLoop = nil
needToPlayBonusLoop = false
AssetsSounds.sharedInstance.bgmFiveMovesLeft?.stop()
AssetsSounds.sharedInstance.bgmFiveMovesLeft = nil
needToPlayFiveMovesLeft = false
AssetsSounds.sharedInstance.bgmRainWithBirds?.stop()
AssetsSounds.sharedInstance.bgmRainWithBirds = nil
needToPlayRainWithBirds = false
}
else if needToPlayGameMusic || needToPlayTitleMusic || needToPlayRainWithBirds || needToPlayBonusLoop || needToPlayBonusLeadIn || needToPlayFiveMovesLeft
{
//play background music if it needs to be played
if needToPlayTitleMusic
{
AssetsSounds.sharedInstance.bgmTitlePlayer?.play()
needToPlayTitleMusic = false
}
//play game music if it needs to be played
if needToPlayGameMusic
{
AssetsSounds.sharedInstance.bgmGamePlayer?.play()
needToPlayGameMusic = false
}
if needToPlayBonusLoop
{
AssetsSounds.sharedInstance.bgmBonusLoop?.play()
needToPlayBonusLoop = false
}
if needToPlayBonusLeadIn
{
AssetsSounds.sharedInstance.bgmBonusLeadIn?.play()
needToPlayBonusLeadIn = false
}
if needToPlayFiveMovesLeft
{
AssetsSounds.sharedInstance.bgmFiveMovesLeft?.play()
needToPlayFiveMovesLeft = false
}
if needToPlayRainWithBirds
{
AssetsSounds.sharedInstance.bgmRainWithBirds?.play()
needToPlayRainWithBirds = false
}
} // end else if
else
{
if viewController.mapScreen != nil
{
AssetsSounds.sharedInstance.bgmTitlePlayer = AssetsSounds.sharedInstance.loadAudioPlayer(SongType.title1, loops: 0)
AssetsSounds.sharedInstance.bgmTitlePlayer?.play()
}
else if viewController.scene != nil && viewController.gameState != .gameover && viewController.gameState != .lost && viewController.gameState != .won && viewController.level != nil && viewController.level.songType != nil
{
AssetsSounds.sharedInstance.bgmGamePlayer = AssetsSounds.sharedInstance.loadAudioPlayer(viewController.level.songType!, loops: 0)
AssetsSounds.sharedInstance.bgmGamePlayer?.play()
viewController.scene.addMusicCredits()
} // end else if
}
}
Have others seen similar crashes related to sound / interruptions? What is the proper way to handle this?
I have seen another post: Sprite Kit & playing sound leads to app termination that references this, but I am not sure if my issue is the same or if the answer here is valid.
Below is the symbolic crash log from my phone:
OS Version: iPhone OS 12.3.1 (16F203)
Baseband Version: 3.60.01
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Triggered by Thread: 0
Application Specific Information:
abort() called
Last Exception Backtrace:
0 CoreFoundation 0x21cb4927c __exceptionPreprocess + 228
1 libobjc.A.dylib 0x21bd239f8 objc_exception_throw + 55
2 CoreFoundation 0x21cac2ce8 _CFThrowFormattedException + 111
3 CoreFoundation 0x21ca34298 -[__NSArrayM removeObjectsInRange:] + 2235
4 SpriteKit 0x233882e3c -[SKSoundSource purgeCompletedBuffers] + 155
5 SpriteKit 0x2338830d4 -[SKSoundSource dealloc] + 47
6 CoreFoundation 0x21caa9ed4 cow_cleanup + 111
7 CoreFoundation 0x21ca334d4 -[__NSArrayM dealloc] + 67
8 SpriteKit 0x233883434 SKCRendererRemoveCompletedSoundSources+ 836660 () + 331
9 SpriteKit 0x2337f12d0 -[SKScene _update:] + 751
10 SpriteKit 0x233816114 -[SKView _update:] + 835
11 SpriteKit 0x2338117f4 __51-[SKView _vsyncRenderForTime:preRender:postRender:]_block_invoke.351 + 387
12 SpriteKit 0x233810bf8 -[SKView _vsyncRenderForTime:preRender:postRender:] + 519
13 SpriteKit 0x233813c54 __29-[SKView setUpRenderCallback]_block_invoke + 207
14 SpriteKit 0x233856c18 -[SKDisplayLink _callbackForNextFrame:] + 163
15 QuartzCore 0x220ed0f90 CA::Display::DisplayLink::dispatch_items+ 69520 (unsigned long long, unsigned long long, unsigned long long) + 635
16 QuartzCore 0x220f9ab10 display_timer_callback+ 895760 (__CFMachPort*, void*, long, void*) + 271
17 CoreFoundation 0x21cab4a8c __CFMachPortPerform + 187
18 CoreFoundation 0x21cadb690 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 55
19 CoreFoundation 0x21cadaddc __CFRunLoopDoSource1 + 439
20 CoreFoundation 0x21cad5c00 __CFRunLoopRun + 2095
21 CoreFoundation 0x21cad50b0 CFRunLoopRunSpecific + 435
22 GraphicsServices 0x21ecd579c GSEventRunModal + 103
23 UIKitCore 0x249341978 UIApplicationMain + 211
24 Pandamonium! 0x100bdd8ec main + 22764 (AppDelegate.swift:19)
25 libdyld.dylib 0x21c59a8e0 start + 3
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x000000021c6e60dc __pthread_kill + 8
1 libsystem_pthread.dylib 0x000000021c7639b0 pthread_kill$VARIANT$armv81 + 296
2 libsystem_c.dylib 0x000000021c63fea8 abort + 140
3 libc++abi.dylib 0x000000021bd0c788 __cxa_bad_cast + 0
4 libc++abi.dylib 0x000000021bd0c934 default_unexpected_handler+ 6452 () + 0
5 libobjc.A.dylib 0x000000021bd23e00 _objc_terminate+ 24064 () + 124
6 libc++abi.dylib 0x000000021bd18838 std::__terminate(void (*)+ 55352 ()) + 16
7 libc++abi.dylib 0x000000021bd18434 __cxa_rethrow + 144
8 libobjc.A.dylib 0x000000021bd23bc8 objc_exception_rethrow + 44
9 CoreFoundation 0x000000021cad511c CFRunLoopRunSpecific + 544
10 GraphicsServices 0x000000021ecd579c GSEventRunModal + 104
11 UIKitCore 0x0000000249341978 UIApplicationMain + 212
12 Pandamonium! 0x0000000100bdd8ec main + 22764 (AppDelegate.swift:19)
13 libdyld.dylib 0x000000021c59a8e0 start + 4
Thread 1 name: com.apple.uikit.eventfetch-thread
Thread 1:
0 libsystem_kernel.dylib 0x000000021c6db0f4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x000000021c6da5a0 mach_msg + 72
2 CoreFoundation 0x000000021cadaa10 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x000000021cad5920 __CFRunLoopRun + 1360
4 CoreFoundation 0x000000021cad50b0 CFRunLoopRunSpecific + 436
5 Foundation 0x000000021d4a2fac -[NSRunLoop+ 32684 (NSRunLoop) runMode:beforeDate:] + 300
6 Foundation 0x000000021d4a2e3c -[NSRunLoop+ 32316 (NSRunLoop) runUntilDate:] + 96
7 UIKitCore 0x0000000249427494 -[UIEventFetcher threadMain] + 136
8 Foundation 0x000000021d5cf6a4 __NSThread__start__ + 984
9 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
10 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
11 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 2 name: AVAudioSession Notify Thread
Thread 2:
0 libsystem_kernel.dylib 0x000000021c6db0f4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x000000021c6da5a0 mach_msg + 72
2 CoreFoundation 0x000000021cadaa10 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x000000021cad5920 __CFRunLoopRun + 1360
4 CoreFoundation 0x000000021cad50b0 CFRunLoopRunSpecific + 436
5 AVFAudio 0x00000002229bd334 GenericRunLoopThread::Entry+ 574260 (void*) + 156
6 AVFAudio 0x00000002229e7c60 CAPThread::Entry+ 748640 (CAPThread*) + 88
7 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
8 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
9 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 3 name: com.apple.NSURLConnectionLoader
Thread 3:
0 libsystem_kernel.dylib 0x000000021c6db0f4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x000000021c6da5a0 mach_msg + 72
2 CoreFoundation 0x000000021cadaa10 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x000000021cad5920 __CFRunLoopRun + 1360
4 CoreFoundation 0x000000021cad50b0 CFRunLoopRunSpecific + 436
5 CFNetwork 0x000000021d0ee74c -[__CoreSchedulingSetRunnable runForever] + 216
6 Foundation 0x000000021d5cf6a4 __NSThread__start__ + 984
7 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
8 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
9 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 4 name: com.apple.coreaudio.AQClient
Thread 4:
0 libsystem_kernel.dylib 0x000000021c6db0f4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x000000021c6da5a0 mach_msg + 72
2 CoreFoundation 0x000000021cadaa10 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x000000021cad5920 __CFRunLoopRun + 1360
4 CoreFoundation 0x000000021cad50b0 CFRunLoopRunSpecific + 436
5 AudioToolbox 0x0000000220b527d8 GenericRunLoopThread::Entry+ 2299864 (void*) + 156
6 AudioToolbox 0x0000000220de14f8 CAPThread::Entry+ 4982008 (CAPThread*) + 88
7 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
8 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
9 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 5 name: com.squareup.SocketRocket.NetworkThread
Thread 5:
0 libsystem_kernel.dylib 0x000000021c6db0f4 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x000000021c6da5a0 mach_msg + 72
2 CoreFoundation 0x000000021cadaa10 __CFRunLoopServiceMachPort + 236
3 CoreFoundation 0x000000021cad5920 __CFRunLoopRun + 1360
4 CoreFoundation 0x000000021cad50b0 CFRunLoopRunSpecific + 436
5 Foundation 0x000000021d4a2fac -[NSRunLoop+ 32684 (NSRunLoop) runMode:beforeDate:] + 300
6 Pandamonium! 0x0000000100f08d4c -[_FSRRunLoopThread main] + 3345740 (FSRWebSocket.m:1843)
7 Foundation 0x000000021d5cf6a4 __NSThread__start__ + 984
8 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
9 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
10 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 6 name: com.apple.CFSocket.private
Thread 6:
0 libsystem_kernel.dylib 0x000000021c6e6328 __select + 8
1 CoreFoundation 0x000000021cae36f4 __CFSocketManager + 620
2 libsystem_pthread.dylib 0x000000021c7682c0 _pthread_body + 128
3 libsystem_pthread.dylib 0x000000021c768220 _pthread_start + 44
4 libsystem_pthread.dylib 0x000000021c76bcdc thread_start + 4
Thread 7:
0 libsystem_pthread.dylib 0x000000021c76bcd0 start_wqthread + 0
Thread 8:
0 libsystem_pthread.dylib 0x000000021c76bcd0 start_wqthread + 0
Thread 9:
0 libsystem_pthread.dylib 0x000000021c76bcd0 start_wqthread + 0
Thread 10:
0 libsystem_pthread.dylib 0x000000021c76bcd0 start_wqthread + 0