【发布时间】：2019-11-15 07:33:54
【问题描述】：
我已提交我的应用以供审核，但苹果回复我说它在启动时崩溃。我得到了提交给苹果的.app文件，并在模拟器上安装了它。
xcrun simctl install booted /Users/venkatanandamuri/Desktop/prod\ crash/Myapp.app
它确实在启动时崩溃了。
Mac 控制台日志没有显示任何关于模拟器崩溃的信息。
我从 Xcode 设备日志中获得了崩溃日志：
Last Exception Backtrace:
0 CoreFoundation 0x1d590a3a8 __exceptionPreprocess + 232
1 libobjc.A.dylib 0x1d4b0fd00 objc_exception_throw + 59
2 CoreFoundation 0x1d58229f8 -[NSObject+ 223736 (NSObject) doesNotRecognizeSelector:] + 143
3 CoreFoundation 0x1d590fd54 ___forwarding___ + 1411
4 CoreFoundation 0x1d5911b50 _CF_forwarding_prep_0 + 95
5 FBSDKCoreKit 0x105f67530 0x105f24000 + 275760
6 FBSDKCoreKit 0x105f673ac 0x105f24000 + 275372
7 FBSDKCoreKit 0x105f2df28 0x105f24000 + 40744
8 FBSDKCoreKit 0x105f2b0b0 0x105f24000 + 28848
9 FBSDKCoreKit 0x105f2afbc 0x105f24000 + 28604
10 FBSDKCoreKit 0x105f70fe0 0x105f24000 + 315360
11 FBSDKCoreKit 0x105f7078c 0x105f24000 + 313228
12 FBSDKCoreKit 0x105f2bb28 0x105f24000 + 31528
13 FBSDKCoreKit 0x105f34cac 0x105f24000 + 68780
14 Foundation 0x1d638115c __57-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_2 + 27
15 CoreFoundation 0x1d5878acc __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 27
16 CoreFoundation 0x1d5878a8c ___CFXRegistrationPost_block_invoke + 67
17 CoreFoundation 0x1d5877f30 _CFXRegistrationPost + 419
18 CoreFoundation 0x1d5877bbc ___CFXNotificationPost_block_invoke + 99
19 CoreFoundation 0x1d57ee768 -[_CFXNotificationRegistrar find:object:observer:enumerator:] + 1503
20 CoreFoundation 0x1d5877664 _CFXNotificationPost + 715
21 Foundation 0x1d62727c4 -[NSNotificationCenter postNotificationName:object:userInfo:] + 71
22 UIKitCore 0x202bd2398 -[UIApplication _stopDeactivatingForReason:] + 1339
23 UIKitCore 0x20247010c __125-[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:]_block_invoke + 487
24 UIKitCore 0x202470e5c _performActionsWithDelayForTransitionContext + 119
25 UIKitCore 0x20246feb8 -[_UICanvasLifecycleSettingsDiffAction performActionsForCanvas:withUpdatedScene:settingsDiff:fromSettings:transitionContext:] + 259
26 UIKitCore 0x202474ea8 -[_UICanvas scene:didUpdateWithDiff:transitionContext:completion:] + 363
27 UIKitCore 0x2027bb904 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] + 479
28 FrontBoardServices 0x1d82ccc58 __80-[FBSSceneImpl updater:didUpdateSettings:withDiff:transitionContext:completion:]_block_invoke_3 + 243
29 libdispatch.dylib 0x1d5319884 _dispatch_client_callout + 19
30 libdispatch.dylib 0x1d531ce5c _dispatch_block_invoke_direct + 251
31 FrontBoardServices 0x1d830918c __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 47
32 FrontBoardServices 0x1d8308e08 -[FBSSerialQueue _performNext] + 435
33 FrontBoardServices 0x1d8309404 -[FBSSerialQueue _performNextFromRunLoopSource] + 55
34 CoreFoundation 0x1d589a444 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 27
35 CoreFoundation 0x1d589a3c0 __CFRunLoopDoSource0 + 91
36 CoreFoundation 0x1d5899c7c __CFRunLoopDoSources0 + 179
37 CoreFoundation 0x1d5894950 __CFRunLoopRun + 987
38 CoreFoundation 0x1d5894254 CFRunLoopRunSpecific + 451
39 GraphicsServices 0x1d7ad3d8c GSEventRunModal + 107
40 UIKitCore 0x202bdc4c0 UIApplicationMain + 215
41 MyApp 0x104d97148 0x104d90000 + 29000
42 libdyld.dylib 0x1d5350fd8 start + 3
我符号崩溃日志，我发现：
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x00000001f1be50dc 0x1f1bc2000 + 143580
指向
NSNotificationName.TimeOutUserInteraction.unsafeMutableAddressor (in MyApp) (InterractionUIApplication.swift:0)
我注释掉了与此通知相关的行，该应用获得了批准。
令人惊讶的是，与此相关的代码不会在应用启动时被调用。不可能，因为我搜索了代码库，并且此代码只会在登录过程中调用，而不是在应用启动时调用。
我想知道为什么它崩溃了，为什么在我注释掉代码后它没有。
与此通知相关的代码：
import UIKit
// User Activity Timer
extension NSNotification.Name {
public static let TimeOutUserInteraction: NSNotification.Name = NSNotification.Name(rawValue: "TimeOutUserInteraction")
}
class InterractionUIApplication: UIApplication {
static let timeoutInSeconds: TimeInterval = 60 * 10 // 10 minutes
private var idleTimer: Timer?
private var enabledUserInteractionTracking: Bool = false
func startUserInternactionTracking() {
enabledUserInteractionTracking = true
resetIdleTimer()
}
func stopUserInternactionTracking() {
enabledUserInteractionTracking = false
if let idleTimer = idleTimer {
idleTimer.invalidate()
}
idleTimer = nil
}
// Resent the timer because there was user interaction.
func resetIdleTimer() {
if let idleTimer = idleTimer {
idleTimer.invalidate()
}
idleTimer = Timer.scheduledTimer(timeInterval: InterractionUIApplication.timeoutInSeconds, target: self, selector: #selector(idleTimerExceeded), userInfo: nil, repeats: false)
}
// If the timer reaches the limit as defined in timeoutInSeconds, post this notification.
@objc func idleTimerExceeded() {
NotificationCenter.default.post(name: Notification.Name.TimeOutUserInteraction, object: nil)
}
}
在MyAppManager 类中：
func startUserInternactionTracking()
{
(UIApplication.shared as? InterractionUIApplication)?.startUserInternactionTracking()
NotificationCenter.default.addObserver(self, selector: #selector(onTimeOutUserInteraction), name: Notification.Name.TimeOutUserInteraction, object: nil) //This is the commented out line to make review successful
}
func stopUserInternactionTracking()
{
(UIApplication.shared as? InterractionUIApplication)?.stopUserInternactionTracking()
NotificationCenter.default.removeObserver(self, name: Notification.Name.TimeOutUserInteraction, object: nil)
}
我确定在应用启动期间不会调用 startUserInternactionTracking。但我想知道为什么这是崩溃的原因？
在 AppDelegate 中，我初始化了管理器类：
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
var appManager = MyAppManager()
.....
}
请注意，此崩溃仅发生在经过 Apple 测试的设备上。预产品构建在我们所有的测试设备中都按预期工作。我缺乏调试这种崩溃的经验。我以前从未见过这种情况。
有人能指出我正确的方向吗？
【问题讨论】：
-
进展如何？是 UIApplication 的问题吗？
-
还是要查，要等app审核后才能查到。审核后我会更新我的问题。感谢您的帮助:)