我的iOS应用崩溃次数令人担忧。当我查看stacktrace时，我可以跟踪stacktrace的流程，直到3d行'fetchDeezerTracks（forAlbum）'。检查我的代码时，甚至不可能调用此行。 ApplePlayerManager.play方法调用ApplePlayerManager.fetchTrackIds方法，该方法调用NetworkManager的“ fetchAppleMusicTracks”，并且该方法具有networkRequestResponseHandler来处理获取的数据，但是永远不应/应该调用“ fetchDeezerTracks”方法。
我的问题如下：当设备的可用RAM不足时，Crashlytics是否可能给出错误的报告？也许是由于内存泄漏或其他原因造成的。。。我只是从崩溃报告中脱颖而出，所以这对我有很多帮助。多个报告（具有相同的崩溃）的一些可用RAM值如下：
233MB（iPad Air 2），8MB（iPAad 5th gen），198MB（iPad Mini 2），332MB（iPad Mini），71MB（iPad Air 2），174MB（iPad 5th gen），223MB（iPad Air 2）， 130MB（iPhone6 +），58MB（iPhoneXR），381MB（iPhoneXSMax）等。
这些是正常值吗？
如果这些是正常值，并且crashlytics报告从未被“破坏”，那么我需要弄清楚stacktrace。我将添加我的网络代码以供参考。
任何帮助都非常感谢！这使我发疯，并且崩溃不断堆积。
Crashed: com.apple.root.background-qos
0 MyApp 0x10045da40 closure #2 in ApplePlayerManager.play(album:withTrack:) + 4302494272 (<compiler-generated>:4302494272)
1 MyApp 0x10045d884 closure #1 in closure #1 in ApplePlayerManager.fetchTrackIds(forAlbum:completionHandler:) + 4302493828 (<compiler-generated>:4302493828)
2 MyApp 0x1004da218 specialized NetworkManager.networkRequestResponseHandler(withResponse:completionHandler:retryHandler:) + 4303004184 (<compiler-generated>:4303004184)
3 MyApp 0x1004d9404 closure #1 in NetworkManager.fetchDeezerTracks(forAlbum:withAccessToken:withCompletionHandler:) + 4303000580
4 MyApp 0x1004d8294 closure #1 in NetworkManager.fetchAppleMusicTracks(forAlbumID:withAccessToken:withCompletionHandler:) + 4302996116
5 Alamofire 0x100a73e64 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5Tm + 132
6 Alamofire 0x100a79d08 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5TATm + 36
7 Alamofire 0x100a5b3b0 $sIeg_IeyB_TR + 28
8 libdispatch.dylib 0x18f0eb9a8 _dispatch_call_block_and_release + 24
9 libdispatch.dylib 0x18f0ec524 _dispatch_client_callout + 16
10 libdispatch.dylib 0x18f0a156c _dispatch_root_queue_drain + 684
11 libdispatch.dylib 0x18f0a1bf8 _dispatch_worker_thread2 + 124
12 libsystem_pthread.dylib 0x18f13db38 _pthread_wqthread + 212
13 libsystem_pthread.dylib 0x18f140740 start_wqthread + 8
我如何获取我的trackIds（NetworkManager）
func fetchAppleMusicTracks(forAlbumID albumID:String,
withAccessToken accessToken:String,
withCompletionHandler completionHandler:@escaping(JSON?)->Void) {
let url = kAppleMusicAlbumURL + albumID
guard let encodedURL = url.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) else { return completionHandler(nil) }
let headers = [kAppleMusicAuthoritationKey : kAppleMusicBearerKey + accessToken]
Alamofire.request(encodedURL,
method: .get,
parameters: nil,
encoding: URLEncoding.default,
headers: headers).responseJSON(queue: backgroundQueue) {
[weak self]
response in
guard let self = self else { completionHandler(nil); return }
self.networkRequestResponseHandler(withResponse:response,
completionHandler:completionHandler) {
self.fetchAppleMusicTracks(forAlbumID: albumID,
withAccessToken: accessToken,
withCompletionHandler: completionHandler)
}
}
}
我的网络请求处理程序（NetworkManager）：
func networkRequestResponseHandler(withResponse response:DataResponse<Any>,
completionHandler: @escaping(JSON?)->Void,
retryHandler: @escaping()->Void) {
switch response.result {
case .success(let value):
completionHandler(JSON(value))
case .failure(let error):
if self.noConnectionValidator(forError: error, withRetryHandler:retryHandler) { return completionHandler(nil) }
if let status = response.response?.statusCode {
let message = BackendManager.sharedInstance.APIErrorMessageHandler(status: status)
AlertsManager.sharedInstance.displayAlertWithOKButton(forTitle: kGenericErrorTitle,
message: message,
buttonTitle: "Ok")
} else {
AlertsManager.sharedInstance.displayNetworkErrorMessage(withError: error)
}
completionHandler(nil)
}
}
获取曲目的方法（ApplePlayerManager）：
private func fetchTrackIds(forAlbum album:String, completionHandler:@escaping([String]?)->Void) {
retrieveAccessToken {
accessToken in
guard let accessToken = accessToken else { completionHandler(nil); return }
NetworkManager.sharedInstance.fetchAppleMusicTracks(forAlbumID: album, withAccessToken: accessToken) {
JSON in
guard let JSON = JSON else {
completionHandler(nil)
return
}
if let tracks = JSON[kAppleMusicDataKey].array?[0][kAppleMusicRelationshipsKey][kAppleMusicTracksKey][kAppleMusicDataKey].array {
let trackIds = tracks.map{ $0[kAppleMusicTrackIdentifierKey].string }.compactMap{ $0 }
completionHandler(trackIds)
} else {
//AlertsManager.sharedInstance.displayAppleMusicCouldNotFetchTracks()
completionHandler(nil)
}
}
}
}
进入点->播放Apple曲目的方法（ApplePlayerManager）：
override public func play(album:String, withTrack track:Int) {
super.play(album: album, withTrack: track)
guard let streamingManager = streamingManager else { return setup { self.play(album: album, withTrack: track) } }
indexOfLastPlayingItem = track
fetchTrackIds(forAlbum: album) {
[weak self]
trackIds in
guard let self = self else { return }
guard let trackIds = trackIds else {
return //AlertsManager.sharedInstance.displayAppleMusicTracksFetchFailed()
}
self.loadedAlbumTrackIDs = trackIds
if let remainingTracks = self.calculateRemainingTrackList(fromCurrentTrack: track) {
ThreadManager.sharedInstance.executeOnMainThread {
self.play(forStreamingManager: streamingManager, remainingTracks: remainingTracks)
}
}
}
}
编辑-更多信息：
由于我的应用程序使用了多种服务，因此我为每个服务创建了一个抽象的PlayerManager单例类，其中包含具体的单例子类。因此，如果事先将PlayerManager.service设置为.Apple，那么PlayerManager.play（track：trackId）将在ApplePlayerManager上调用正确的具体类方法。
我知道单身人士似乎在代码中的某个地方错误地更改了服务，但是再也没有任何意义，我无法重现它，也不会遇到断点。
编辑第二部分-所有线程堆栈：
我怀疑这可能与线程有关？这是所有线程：
Crashed: com.apple.root.background-qos
EXC_BREAKPOINT 0x0000000104cd5a40
Crashed: com.apple.root.background-qos
0 MyApp 0x104cd5a40 closure #2 in ApplePlayerManager.play(album:withTrack:) + 4376304192 (<compiler-generated>:4376304192)
1 MyApp 0x104cd5884 closure #1 in closure #1 in ApplePlayerManager.fetchTrackIds(forAlbum:completionHandler:) + 4376303748 (<compiler-generated>:4376303748)
2 MyApp 0x104d52218 specialized NetworkManager.networkRequestResponseHandler(withResponse:completionHandler:retryHandler:) + 4376814104 (<compiler-generated>:4376814104)
3 MyApp 0x104d51404 closure #1 in NetworkManager.fetchDeezerTracks(forAlbum:withAccessToken:withCompletionHandler:) + 4376810500
4 MyApp 0x104d50294 closure #1 in NetworkManager.fetchAppleMusicTracks(forAlbumID:withAccessToken:withCompletionHandler:) + 4376806036
5 Alamofire 0x105313e64 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5Tm + 132
6 Alamofire 0x105319d08 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5TATm + 36
7 Alamofire 0x1052fb3b0 $sIeg_IeyB_TR + 28
8 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
9 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
10 libdispatch.dylib 0x1b2e8165c _dispatch_root_queue_drain + 640
11 libdispatch.dylib 0x1b2e81cd0 _dispatch_worker_thread2 + 112
12 libsystem_pthread.dylib 0x1b2eecb38 _pthread_wqthread + 212
13 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
com.apple.main-thread
com.apple.main-thread
0 libsystem_kernel.dylib 0x1b2fa9198 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b2fa860c mach_msg + 72
2 CoreFoundation 0x1b31533b4 __CFRunLoopServiceMachPort + 148
3 CoreFoundation 0x1b314e3e8 __CFRunLoopRun + 1160
4 CoreFoundation 0x1b314dc34 CFRunLoopRunSpecific + 424
5 GraphicsServices 0x1bd29738c GSEventRunModal + 160
6 UIKitCore 0x1b728022c UIApplicationMain + 1932
7 MyApp 0x104cd1060 main + 12 (AppDelegate.swift:12)
8 libdyld.dylib 0x1b2fd5800 start + 4
com.apple.uikit.eventfetch-thread
com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x1b2fa9198 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b2fa860c mach_msg + 72
2 CoreFoundation 0x1b31533b4 __CFRunLoopServiceMachPort + 148
3 CoreFoundation 0x1b314e3e8 __CFRunLoopRun + 1160
4 CoreFoundation 0x1b314dc34 CFRunLoopRunSpecific + 424
5 Foundation 0x1b3490bcc -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228
6 Foundation 0x1b3490aac -[NSRunLoop(NSRunLoop) runUntilDate:] + 88
7 UIKitCore 0x1b7322160 -[UIEventFetcher threadMain] + 152
8 Foundation 0x1b35bf9d0 __NSThread__start__ + 848
9 libsystem_pthread.dylib 0x1b2eebd98 _pthread_start + 156
10 libsystem_pthread.dylib 0x1b2eef74c thread_start + 8
com.twitter.crashlytics.ios.MachExceptionServer
com.twitter.crashlytics.ios.MachExceptionServer
0 MyApp 0x104d7b448 CLSProcessRecordAllThreads + 4376982600
1 MyApp 0x104d7b830 CLSProcessRecordAllThreads + 4376983600
2 MyApp 0x104d6b09c CLSHandler + 4376916124
3 MyApp 0x104d66ac4 CLSMachExceptionServer + 4376898244
4 libsystem_pthread.dylib 0x1b2eebd98 _pthread_start + 156
5 libsystem_pthread.dylib 0x1b2eef74c thread_start + 8
com.apple.root.background-qos
com.apple.root.background-qos
0 libsystem_malloc.dylib 0x1b2ec6154 calloc + 98
1 CoreFoundation 0x1b31e23c4 __CFAllocateObject + 20
2 CoreFoundation 0x1b3205b38 __NSDictionaryM_new + 128
3 Foundation 0x1b3586e68 _encodeObject + 964
4 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
5 Foundation 0x1b3586f58 _encodeObject + 1204
6 MyApp 0x104d372f8 Album.encode(with:) + 4376703736 (<compiler-generated>:4376703736)
7 MyApp 0x104d37354 @objc Album.encode(with:) + 4376703828 (<compiler-generated>:4376703828)
8 Foundation 0x1b3586f58 _encodeObject + 1204
9 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
10 Foundation 0x1b3586f58 _encodeObject + 1204
11 MyApp 0x104cec884 Series.encode(with:) + 4376397956 (<compiler-generated>:4376397956)
12 MyApp 0x104cec93c @objc Series.encode(with:) + 4376398140 (<compiler-generated>:4376398140)
13 Foundation 0x1b3586f58 _encodeObject + 1204
14 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
15 Foundation 0x1b3586f58 _encodeObject + 1204
16 MyApp 0x104cfcaf0 User.encode(with:) + 4376464112 (<compiler-generated>:4376464112)
17 MyApp 0x104cfcc64 @objc User.encode(with:) + 4376464484 (<compiler-generated>:4376464484)
18 Foundation 0x1b3586f58 _encodeObject + 1204
19 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
20 Foundation 0x1b34ccea0 -[NSDictionary(NSDictionary) encodeWithCoder:] + 876
21 Foundation 0x1b3586f58 _encodeObject + 1204
22 Foundation 0x1b34ed5c8 +[NSKeyedArchiver archivedDataWithRootObject:] + 124
23 SwiftyUserDefaults 0x105c9b8c4 $sSo14NSUserDefaultsC010SwiftyUserB0E7archiveyyAC0B3KeyCyxSgG_AGtlF + 292
24 MyApp 0x104d3a7f8 closure #1 in UserManager._cachedSavedUsers.didset + 4376717304 (<compiler-generated>:4376717304)
25 MyApp 0x104d05e10 partial apply for closure #1 in ThreadManager.executeOnMainThread(afterSeconds:withBlock:) + 4376501776 (<compiler-generated>:4376501776)
26 MyApp 0x104d5fc98 thunk for @escaping @callee_guaranteed () -> () + 4376870040 (<compiler-generated>:4376870040)
27 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
28 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
29 libdispatch.dylib 0x1b2e8165c _dispatch_root_queue_drain + 640
30 libdispatch.dylib 0x1b2e81cd0 _dispatch_worker_thread2 + 112
31 libsystem_pthread.dylib 0x1b2eecb38 _pthread_wqthread + 212
32 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
com.apple.NSURLConnectionLoader
com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x1b2fa9198 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b2fa860c mach_msg + 72
2 CoreFoundation 0x1b31533b4 __CFRunLoopServiceMachPort + 148
3 CoreFoundation 0x1b314e3e8 __CFRunLoopRun + 1160
4 CoreFoundation 0x1b314dc34 CFRunLoopRunSpecific + 424
5 CFNetwork 0x1b6412c44 (Missing)
6 Foundation 0x1b35bf9d0 __NSThread__start__ + 848
7 libsystem_pthread.dylib 0x1b2eebd98 _pthread_start + 156
8 libsystem_pthread.dylib 0x1b2eef74c thread_start + 8
com.apple.root.background-qos
com.apple.root.background-qos
0 libsystem_platform.dylib 0x1b2edd948 _platform_memmove + 88
1 libsystem_malloc.dylib 0x1b2ebc628 szone_realloc + 544
2 libsystem_malloc.dylib 0x1b2ec5a9c malloc_zone_realloc + 168
3 libsystem_malloc.dylib 0x1b2ec625c realloc + 196
4 CoreFoundation 0x1b30f3948 __CFSafelyReallocate + 28
5 Foundation 0x1b3555ea0 _NSMutableDataGrowBytes + 344
6 Foundation 0x1b34a2a34 -[NSConcreteMutableData appendBytes:length:] + 340
7 CoreFoundation 0x1b30fcfac writeBytes + 164
8 CoreFoundation 0x1b30fa01c bufferWrite + 320
9 CoreFoundation 0x1b30fd144 _appendString + 264
10 CoreFoundation 0x1b30fa1b8 _appendObject + 348
11 CoreFoundation 0x1b30f99fc __CFBinaryPlistWriteOrPresize + 528
12 Foundation 0x1b34a27d0 -[NSKeyedArchiver finishEncoding] + 528
13 Foundation 0x1b34ed5d8 +[NSKeyedArchiver archivedDataWithRootObject:] + 140
14 SwiftyUserDefaults 0x105c9b8c4 $sSo14NSUserDefaultsC010SwiftyUserB0E7archiveyyAC0B3KeyCyxSgG_AGtlF + 292
15 MyApp 0x104d3a3bc closure #1 in UserManager._cachedActiveUser.didset + 4376716220 (<compiler-generated>:4376716220)
16 MyApp 0x104d05e10 partial apply for closure #1 in ThreadManager.executeOnMainThread(afterSeconds:withBlock:) + 4376501776 (<compiler-generated>:4376501776)
17 MyApp 0x104d5fc98 thunk for @escaping @callee_guaranteed () -> () + 4376870040 (<compiler-generated>:4376870040)
18 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
19 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
20 libdispatch.dylib 0x1b2e8165c _dispatch_root_queue_drain + 640
21 libdispatch.dylib 0x1b2e81cd0 _dispatch_worker_thread2 + 112
22 libsystem_pthread.dylib 0x1b2eecb38 _pthread_wqthread + 212
23 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
AVAudioSession Notify Thread
AVAudioSession Notify Thread
0 libsystem_kernel.dylib 0x1b2fa9198 mach_msg_trap + 8
1 libsystem_kernel.dylib 0x1b2fa860c mach_msg + 72
2 CoreFoundation 0x1b31533b4 __CFRunLoopServiceMachPort + 148
3 CoreFoundation 0x1b314e3e8 __CFRunLoopRun + 1160
4 CoreFoundation 0x1b314dc34 CFRunLoopRunSpecific + 424
5 AVFAudio 0x1bfef65dc GenericRunLoopThread::Entry(void*) + 156
6 AVFAudio 0x1bff47300 CAPThread::Entry(CAPThread*) + 204
7 libsystem_pthread.dylib 0x1b2eebd98 _pthread_start + 156
8 libsystem_pthread.dylib 0x1b2eef74c thread_start + 8
Thread #1
Thread
0 libsystem_kernel.dylib 0x1b2fcb940 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x1b2eecbc0 _pthread_wqthread + 348
2 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
Thread #2
Thread
0 libsystem_pthread.dylib 0x1b2eef738 start_wqthread + 190
com.apple.root.background-qos
com.apple.root.background-qos
0 CoreFoundation 0x1b3206828 mdict_rehashd + 244
1 CoreFoundation 0x1b30b8f00 -[__NSDictionaryM __setObject:forKey:] + 888
2 Foundation 0x1b35876d8 addValueToTopContainerE + 128
3 Foundation 0x1b3587180 _encodeObject + 1756
4 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
5 Foundation 0x1b3586f58 _encodeObject + 1204
6 MyApp 0x104d372f8 Album.encode(with:) + 4376703736 (<compiler-generated>:4376703736)
7 MyApp 0x104d37354 @objc Album.encode(with:) + 4376703828 (<compiler-generated>:4376703828)
8 Foundation 0x1b3586f58 _encodeObject + 1204
9 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
10 Foundation 0x1b3586f58 _encodeObject + 1204
11 MyApp 0x104cec884 Series.encode(with:) + 4376397956 (<compiler-generated>:4376397956)
12 MyApp 0x104cec93c @objc Series.encode(with:) + 4376398140 (<compiler-generated>:4376398140)
13 Foundation 0x1b3586f58 _encodeObject + 1204
14 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
15 Foundation 0x1b3586f58 _encodeObject + 1204
16 MyApp 0x104cfcaf0 User.encode(with:) + 4376464112 (<compiler-generated>:4376464112)
17 MyApp 0x104cfcc64 @objc User.encode(with:) + 4376464484 (<compiler-generated>:4376464484)
18 Foundation 0x1b3586f58 _encodeObject + 1204
19 Foundation 0x1b34a2334 -[NSKeyedArchiver _encodeArrayOfObjects:forKey:] + 360
20 Foundation 0x1b34ccea0 -[NSDictionary(NSDictionary) encodeWithCoder:] + 876
21 Foundation 0x1b3586f58 _encodeObject + 1204
22 Foundation 0x1b34ed5c8 +[NSKeyedArchiver archivedDataWithRootObject:] + 124
23 SwiftyUserDefaults 0x105c9b8c4 $sSo14NSUserDefaultsC010SwiftyUserB0E7archiveyyAC0B3KeyCyxSgG_AGtlF + 292
24 MyApp 0x104d3a7f8 closure #1 in UserManager._cachedSavedUsers.didset + 4376717304 (<compiler-generated>:4376717304)
25 MyApp 0x104d05e10 partial apply for closure #1 in ThreadManager.executeOnMainThread(afterSeconds:withBlock:) + 4376501776 (<compiler-generated>:4376501776)
26 MyApp 0x104d5fc98 thunk for @escaping @callee_guaranteed () -> () + 4376870040 (<compiler-generated>:4376870040)
27 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
28 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
29 libdispatch.dylib 0x1b2e8165c _dispatch_root_queue_drain + 640
30 libdispatch.dylib 0x1b2e81cd0 _dispatch_worker_thread2 + 112
31 libsystem_pthread.dylib 0x1b2eecb38 _pthread_wqthread + 212
32 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
com.apple.root.background-qos
com.apple.root.background-qos
0 libobjc.A.dylib 0x1b2f12aa8 objc_release + 24
1 libswiftCore.dylib 0x1c0914680 swift_arrayDestroy + 68
2 libswiftCore.dylib 0x1c06d38c8 _DictionaryStorage.deinit + 360
3 libswiftCore.dylib 0x1c06d394c _DictionaryStorage.__deallocating_deinit + 12
4 libswiftCore.dylib 0x1c091e320 _swift_release_dealloc + 28
5 SwiftyJSON 0x105c396d0 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 1400
6 SwiftyJSON 0x105c394a4 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 844
7 SwiftyJSON 0x105c395d8 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 1152
8 SwiftyJSON 0x105c394a4 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 844
9 SwiftyJSON 0x105c394a4 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 844
10 SwiftyJSON 0x105c394a4 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 844
11 SwiftyJSON 0x105c395d8 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 1152
12 SwiftyJSON 0x105c394a4 $s10SwiftyJSON6unwrap33_4625CC38AABF536BB76490A35D7233C9LLyypypF + 844
13 SwiftyJSON 0x105c383e4 $s10SwiftyJSON0B0V6objectypvs + 44
14 SwiftyJSON 0x105c49ccc $s10SwiftyJSON0B0V10jsonObjectACyp_tc33_4625CC38AABF536BB76490A35D7233C9LlfCTf4nd_n + 164
15 SwiftyJSON 0x105c49f00 $s10SwiftyJSON0B0VyACypcfCTf4nd_n + 152
16 SwiftyJSON 0x105c381ac $s10SwiftyJSON0B0VyACypcfC + 28
17 MyApp 0x104d521e4 specialized NetworkManager.networkRequestResponseHandler(withResponse:completionHandler:retryHandler:) + 51 (NetworkManager.swift:51)
18 MyApp 0x104d51404 closure #1 in NetworkManager.fetchDeezerTracks(forAlbum:withAccessToken:withCompletionHandler:) + 4376810500
19 MyApp 0x104d50294 closure #1 in NetworkManager.fetchAppleMusicTracks(forAlbumID:withAccessToken:withCompletionHandler:) + 4376806036
20 Alamofire 0x105313e64 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5Tm + 132
21 Alamofire 0x105319d08 $s9Alamofire15DownloadRequestC8response5queue0D10Serializer17completionHandlerACXDSo012OS_dispatch_E0CSg_xyAA0B8ResponseVy16SerializedObjectQzGctAA0bkF8ProtocolRzlFyycfU_yycfU_AA0bkF0VyypG_Tg5TATm + 36
22 Alamofire 0x1052fb3b0 $sIeg_IeyB_TR + 28
23 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
24 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
25 libdispatch.dylib 0x1b2e8165c _dispatch_root_queue_drain + 640
26 libdispatch.dylib 0x1b2e81cd0 _dispatch_worker_thread2 + 112
27 libsystem_pthread.dylib 0x1b2eecb38 _pthread_wqthread + 212
28 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
com.google.fira.worker
com.google.fira.worker
0 libsqlite3.dylib 0x1b4df32a8 sqlite3_exec + 26552
1 libsqlite3.dylib 0x1b4dee810 sqlite3_exec + 7456
2 libsqlite3.dylib 0x1b4ded6fc sqlite3_exec + 3084
3 libsqlite3.dylib 0x1b4decc3c sqlite3_exec + 332
4 MyApp 0x104e1d0cc -[APMSqliteStore beginTransaction] + 4377645260
5 MyApp 0x104e1cf18 -[APMSqliteStore performTransactionWithError:block:] + 4377644824
6 MyApp 0x104dd9444 -[APMDatabase performTransaction:] + 4377367620
7 MyApp 0x104df2a5c -[APMMeasurement writeEventOnWorkerQueue:] + 4377471580
8 MyApp 0x104df2280 -[APMMeasurement handleEventOnWorkerQueue:] + 4377469568
9 MyApp 0x104df1500 __27-[APMMeasurement logEvent:]_block_invoke + 4377466112
10 MyApp 0x104e06f50 __51-[APMScheduler scheduleOnWorkerQueueBlockID:block:]_block_invoke + 4377554768
11 libdispatch.dylib 0x1b2e9a9a8 _dispatch_call_block_and_release + 24
12 libdispatch.dylib 0x1b2e9b524 _dispatch_client_callout + 16
13 libdispatch.dylib 0x1b2e78b3c _dispatch_lane_serial_drain$VARIANT$armv81 + 564
14 libdispatch.dylib 0x1b2e7954c _dispatch_lane_invoke$VARIANT$armv81 + 396
15 libdispatch.dylib 0x1b2e8284c _dispatch_workloop_worker_thread + 580
16 libsystem_pthread.dylib 0x1b2eecb74 _pthread_wqthread + 272
17 libsystem_pthread.dylib 0x1b2eef740 start_wqthread + 8
我的iOS应用崩溃次数令人担忧。当我查看stacktrace时，我可以跟踪stacktrace的流程，直到3d行'fetchDeezerTracks（forAlbum）'。检查我的代码时...
（只是一个猜测）