在 iOS7 中使用应用程序时，我遇到了一个非常奇怪的崩溃。它基本上是我正在开发的一个电子阅读器应用程序，当我打开一本书，让 iPad 进入睡眠状态时，整个 iPad 崩溃了！！！它只是不会崩溃，它会完全冻结，用户必须通过按住主页和锁定按钮来硬重置它。如果他们不这样做，iPad 将在 5 分钟内重新启动，但在此期间，iPad 完全冻结。
我花了很多时间检查所有线程是否干净，尝试删除所有应用程序委托方法，如“applicationWillResignActive”、“applicationDidEnterBackground”等，但不行！
我正在添加控制台的日志：
Oct 21 13:53:45 iPad backboardd[29] <Notice>: Posting 'com.apple.iokit.hid.displayStatus' notifyState=0
Oct 21 13:53:45 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::setBacklightEnableGated 0 (set level to 0x37e)
Oct 21 13:53:45 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::handleMessageGated - framebufferState -> 0
Oct 21 13:53:45 iPad kernel[0] <Debug>: AppleMultitouchZ2SPI: updating power statistics
Oct 21 13:53:45 iPad backboardd[29] <Notice>: MultitouchHID: detection mode: 0->255
Oct 21 13:53:45 iPad SpringBoard[33] <Warning>: [MPUNowPlayingController] Not registered for now playing notifications. Ignoring call to -unregisterForNotifications.
Oct 21 13:53:45 iPad profiled[177] <Notice>: (Note ) profiled: Service starting...
Oct 21 13:53:46 iPad Lightsail[173] <Warning>: RTMPClient -> disconnect: *** DISCONNECT... *** <retainCount == 1
Oct 21 13:53:46 iPad Lightsail[173] <Warning>: --------------------------------------- doDisconnect
Oct 21 13:53:46 iPad Lightsail[173] <Warning>: applicationWillResignActive
Oct 21 13:53:46 iPad Lightsail[173] <Notice>: TestFlight: End of Session
Oct 21 13:53:49 iPad Lightsail[173] <Warning>: applicationDidEnterBackground
Oct 21 13:53:49 iPad Lightsail[173] <Warning>: App is up to date
Oct 21 13:53:49 iPad Lightsail[173] <Warning>: {(
<UserSession: 0x177a7df0> (entity: UserSession; id: 0x1784d1d0 <x-coredata://2A1EBEB3-C354-4626-B699-7FEAA7C39D16/UserSession/p1> ; data: {
actualSessionID = 51923;
iD = "x-coredata:///UserSession/t12CF6E6E-C607-4B6B-9266-D53F0903E5199";
identifier = nil;
lastPing = "2013-10-21 11:53:42 +0000";
serverID = 1;
sessionEnd = "2013-10-21 11:53:49 +0000";
sessionID = nil;
sessionStart = "2013-10-21 11:52:17 +0000";
userSessionType = 3;
userSessionTypeID = 1308442;
}),
<UserSession: 0x17bb9e70> (entity: UserSession; id: 0x17bc5fb0 <x-coredata://2A1EBEB3-C354-4626-B699-7FEAA7C39D16/UserSession/p3> ; data: {
actualSessionID = 284053;
iD = "x-coredata:///UserSession/t12CF6E6E-C607-4B6B-9266-D53F0903E519285";
identifier = nil;
lastPing = "2013-10-21 11:53:42 +0000";
serverID = 1;
sessionEnd = "2013-10-21 11:53:49 +0000";
sessionID = nil;
sessionStart = "2013-10-21 11:53:34 +0000";
userSessionType = 1;
userSessionTypeID = 37025;
}),
<UserSession: 0x17dc5660> (entity: UserSession; id: 0x17dc5fd0 <x-coredata://2A1EBEB3-C354-4626-B699-7FEAA7C39D16/UserSession/p4> ; data: {
actualSessionID = 33899;
iD = "x-coredata:///UserSession/t12CF6E6E-C607-4B6B-9266-D53F0903E519286";
identifier = nil;
lastPing = "2013-10-21 11:53:49 +0000";
serverID = 1;
sessionEnd = "2013-10-21 11:53:49 +0000";
sessionID = nil;
sessionStart = "2013-10-21 11:53:34 +0000";
userSessionType = 7;
userSessionTypeID = 1308442;
})
)}
Oct 21 13:53:49 iPad Lightsail[173] <Warning>: ===== Server details retrieved =====
Oct 21 13:53:56 iPad profiled[177] <Notice>: (Note ) profiled: Service stopping.
Oct 21 13:55:56 iPad UserEventAgent[14] <Error>: watchdog: com.apple.backboardd not responding; forcing a crash
Oct 21 13:55:56 iPad UserEventAgent[14] <Notice>: watchdog: can be disabled with the shell command: defaults write com.apple.mobilewatchdog WatchdogEnabled -bool no
Oct 21 13:55:56 iPad ReportCrash[178] <Notice>: Saved crashreport to /Library/Logs/CrashReporter/stacks+backboardd-2013-10-21-135556.plist using uid: 0 gid: 0, synthetic_euid: 0 egid: 0
Oct 21 13:55:56 iPad CLTM[14] <Error>: CLTM: No ALS Event
Oct 21 13:55:56 iPad com.apple.launchd[1] (com.apple.backboardd[29]) <Notice>: (com.apple.backboardd) Exited: Killed: 9
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void IOMobileFramebuffer::swapping_client_will_stop(IOMobileFramebufferUserClient *), AppleMobileCLCD, client (0x0x96e1a600) going to wait on swap
Oct 21 13:55:57 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::handleMessageGated - framebufferState -> 1
Oct 21 13:55:57 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::setBacklightEnableGated 1 (set level to 0x6d0)
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void IOMobileFramebuffer::swapping_client_will_stop(IOMobileFramebufferUserClient *), AppleMobileCLCD, client (0x0x96e1a600) exiting wait on swap
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 1 swapBusy: 0 pendingSwap: 0x0 fController: 0 -> 0
Oct 21 13:55:57 iPad backboardd[179] <Notice>: void __IOHIDPlugInLoadBundles(): Loaded 5 HID plugins
Oct 21 13:55:57 iPad backboardd[179] <Notice>: Posting 'com.apple.iokit.hid.displayStatus' notifyState=1
Oct 21 13:55:57 iPad backboardd[179] <Error>: IOHIDService compatibility thread running at priority 63 and schedule 2.
Oct 21 13:55:57 iPad backboardd[179] <Notice>: MultitouchHID: detection mode: 255->0 (deferring until bootloaded)
Oct 21 13:55:57 iPad kernel[0] <Debug>: IOReturn AppleRGBOUT::set_display_device_gated(uint32_t), 1
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void AppleRGBOUT::do_power_state_change(): fSoft: 1 fHard: 1 swapBusy: 1 pendingSwap: 0x0 fController: 0 -> 1
Oct 21 13:55:57 iPad kernel[0] <Debug>: bool AppleRGBOUT::power_up_hardware()
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 1 swapBusy: 0 pendingSwap: 0x9f357a00 fController: 1 -> 1
Oct 21 13:55:57 iPad kernel[0] <Debug>: IOReturn IOMobileFramebufferUserClient::set_hotplug_notify(void *, void *) 0x32ef76d1 0x18264200
Oct 21 13:55:57 iPad kernel[0] <Debug>: IOReturn IOMobileFramebufferUserClient::set_hotplug_notify(void *, void *) 0x96e1a600 0xa8464540 0x32ef76d1 0x18264200
Oct 21 13:55:57 iPad kernel[0] <Debug>: virtual void AppleRGBOUT::do_power_state_change(): fSoft: 0 fHard: 1 swapBusy: 0 pendingSwap: 0x0 fController: 1 -> 0
Oct 21 13:55:57 iPad kernel[0] <Debug>: bool AppleRGBOUT::power_down_hardware()
Oct 21 13:55:57 iPad kernel[0] <Debug>: bool AppleRGBOUT::power_down_hardware(), clock down RGBOUT
Oct 21 13:55:57 iPad backboardd[179] <Notice>: ALS: open: legacy auto brightness plugin _plugInEnabled=true
Oct 21 13:55:57 iPad backboardd[179] <Notice>: HID: Display IOHIDDisplaySetProperty: LogLevel = 6
Oct 21 13:55:57 iPad backboardd[179] <Error>: Successfully opened the IOHIDSession
Oct 21 13:55:57 iPad backboardd[179] <Error>: HID Session async scheduling initiated.
Oct 21 13:55:57 iPad backboardd[179] <Error>: HID Session async root queue running at priority 63 and schedule 2.
Oct 21 13:55:57 iPad backboardd[179] <Error>: HID Session async scheduling complete.
Oct 21 13:55:57 iPad SpringBoard[33] <Error>: hidd died. Reestablishing connection.
Oct 21 13:55:57 iPad locationd[52] <Error>: hidd died. Reestablishing connection.
Oct 21 13:55:57 iPad SpringBoard[33] <Error>: hidd died. Reestablishing connection.
Oct 21 13:55:57 iPad UserEventAgent[14] <Error>: hidd died. Reestablishing connection.
Oct 21 13:55:57 iPad aggregated[37] <Error>: hidd died. Reestablishing connection.
Oct 21 13:55:57 iPad backboardd[179] <Notice>: MultitouchHID: device bootloaded
Oct 21 13:55:57 iPad backboardd[179] <Notice>: MultitouchHID: detection mode: 0->0
Oct 21 13:55:57 iPad backboardd[179] <Warning>: Migration complete (if performed). (Elapsed time: 0.00 seconds)
Oct 21 13:55:57 iPad imagent[56] <Warning>: [Warning] Unable to get entitlements for client task. Error: Error Domain=NSPOSIXErrorDomain Code=-1 "The operation couldn’t be completed. (POSIX error -1 - Unknown error: -1)"
Oct 21 13:55:57 iPad imagent[56] <Warning>: [Warning] Denying xpc connection, task does not have entitlement: com.apple.private.icfcallserver (SpringBoard:33)
Oct 21 13:55:57 iPad imagent[56] <Warning>: [Warning] Denying xpc connection, task does not have entitlement: com.apple.private.icfcallserver (SpringBoard:33)
Oct 21 13:55:58 iPad backboardd[179] <Warning>: -[BKSystemAppSentinel lock_bootstrap] Found running system app (com.apple.SpringBoard, pid 180). Attempting to stop it...
Oct 21 13:55:58 iPad com.apple.launchd[1] (com.apple.SpringBoard) <Notice>: (com.apple.SpringBoard) Throttling respawn: Will start in 5 seconds
Oct 21 13:55:58 iPad com.apple.launchd[1] (UIKitApplication:com.lightsail.ereader[0x9a12][173]) <Warning>: (UIKitApplication:com.lightsail.ereader[0x9a12]) Exit timeout elapsed (1 seconds). Killing
Oct 21 13:55:58 iPad com.apple.debugserver-300.2[160] <Warning>: 1 +0.000000 sec [00a0/060b]: error: ::thread_suspend (2f03) err = (os/kern) object terminated (0x00000025)
Oct 21 13:55:58 iPad com.apple.debugserver-300.2[160] <Warning>: 2 +0.001156 sec [00a0/060b]: error: ::thread_suspend (3003) err = (ipc/send) invalid destination port (0x10000003)
Oct 21 13:55:58 iPad com.apple.debugserver-300.2[160] <Warning>: 3 +0.000819 sec [00a0/060b]: error: ::task_info ( target_task = 0x1b0f, flavor = TASK_BASIC_INFO, task_info_out => 0x27d5b928, task_info_outCnt => 8 ) err = (os/kern) invalid argument (0x00000004)
Oct 21 13:55:58 iPad com.apple.debugserver-300.2[160] <Warning>: 4 +0.033603 sec [00a0/1207]: error: ::read ( -1, 0x3c69ec, 18446744069414585344 ) => -1 err = Bad file descriptor (0x00000009)
Oct 21 13:55:58 iPad com.apple.debugserver-300.2[160] <Warning>: Exiting.
Oct 21 13:56:03 iPad backboardd[179] <Warning>: Telling the system app that it can start immediately
Oct 21 13:56:03 iPad SpringBoard[183] <Warning>: Loaded logger: SBAppInstallationLog
Oct 21 13:56:03 iPad SpringBoard[183] <Warning>: Loaded logger: SBIconLog
Oct 21 13:56:03 iPad SpringBoard[183] <Warning>: Loaded logger: SBWorkspaceLogging
Oct 21 13:56:03 iPad SpringBoard[183] <Warning>: *** error reading settings archive file: <SBRootSettings: /var/mobile/Documents/com.apple.springboard.settings/RootSettings.plist>
Oct 21 13:56:03 iPad backboardd[179] <Warning>: -[BKSystemAppSentinel lock_notePresenceOfSystemApp:] Now monitoring "com.apple.SpringBoard"
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:200: string SBNonDefaultSystemAppTag is not a valid gestalt question
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:200: string hidden is not a valid gestalt question
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:837: front-facing-camera cannot generate notifications yet
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:835: ipad is static and will never generate a notification
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:835: any-telephony is static and will never generate a notification
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:835: stand-alone-contacts is static and will never generate a notification
Oct 21 13:56:04 iPad SpringBoard[183] <Error>: libMobileGestalt MobileGestalt.c:835: still-camera is static and will never generate a notification
Oct 21 13:56:04 iPad profiled[185] <Notice>: (Note ) profiled: Service starting...
Oct 21 13:56:04 iPad SpringBoard[183] <Warning>: lockdown says the device is: [Activated], state is 3
Oct 21 13:56:05 iPad misd[186] <Notice>: unable to read plist for gettingmax wireless hosts
Oct 21 13:56:05 iPad SpringBoard[183] <Warning>: BTM: attaching to BTServer
Oct 21 13:56:05 iPad SpringBoard[183] <Warning>: [Warning] Services all disappeared, removing all dependent devices
Oct 21 13:56:05 iPad SpringBoard[183] <Warning>: Using your own bundle identifier as an NSUserDefaults suite name does not make sense and will not work. Break on _NSUserDefaults_Log_Nonsensical_Suites to find this
Oct 21 13:56:05 iPad backboardd[179] <Notice>: MultitouchHID: detection mode: 0->5
Oct 21 13:56:06 iPad SpringBoard[183] <Warning>: Application windows are expected to have a root view controller at the end of application launch
Oct 21 13:56:06 iPad SpringBoard[183] <Error>: WiFi: Consulting "no-sdio-devices" property.
Oct 21 13:56:06 iPad SpringBoard[183] <Error>: WiFi: "no-sdio-devices" property not found.
Oct 21 13:56:06 iPad kernel[0] <Debug>: launchd[188] Container: /private/var/mobile/Applications/4867203C-7B23-44F5-B161-398914C62FE5 (sandbox)
Oct 21 13:56:07 iPad SpringBoard[183] <Warning>: SMS Plugin initialized.
Oct 21 13:56:07 iPad SpringBoard[183] <Error>: WiFi: Consulting "no-sdio-devices" property.
Oct 21 13:56:07 iPad SpringBoard[183] <Error>: WiFi: "no-sdio-devices" property not found.
Oct 21 13:56:07 iPad SpringBoard[183] <Warning>: WiFi picker plugin initialized
Oct 21 13:56:07 iPad SpringBoard[183] <Notice>: 2013-10-21 13:56:07.137|183|0x16e8cdb0: Region monitoring not available or enabled. Trigger ignored!
Oct 21 13:56:09 iPad syncdefaultsd[189] <Notice>: (Note ) SYDAlwaysOnAccount: no account (null)
Oct 21 13:56:09 iPad syncdefaultsd[189] <Notice>: (Note ) SYDAccount: no account
Oct 21 13:56:09 iPad syncdefaultsd[189] <Notice>: (Note ) SYDPIMAccount: no account (null)
Oct 21 13:56:15 iPad backboardd[179] <Notice>: Posting 'com.apple.iokit.hid.displayStatus' notifyState=0
Oct 21 13:56:15 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::setBacklightEnableGated 0 (set level to 0x37e)
Oct 21 13:56:15 iPad kernel[0] <Debug>: ALS: AppleARMBacklight::handleMessageGated - framebufferState -> 0
Oct 21 13:56:15 iPad kernel[0] <Debug>: AppleMultitouchZ2SPI: updating power statistics
Oct 21 13:56:15 iPad backboardd[179] <Notice>: MultitouchHID: detection mode: 5->255
Oct 21 13:56:17 iPad profiled[185] <Notice>: (Note ) profiled: Service stopping.
正如您在该行中看到的：Oct 21 13:55:58 iPad com.apple.launchd[1] (UIKitApplication:com.lightsail.ereader[0x9a12][173]) : (UIKitApplication:com.lightsail.ereader[0x9a12] ]) 退出超时（1 秒）。杀戮
它说明了退出超时。com.lightsail.ereader 是我的应用程序的标识符。