在将应用更新到新版本的过程中，我发现iOS会杀死应用程序。我在日志中看到：
Jul 2 18:20:40 SpringBoard[33] <Warning>: Killing com.myapp.app for app installation
Jul 2 18:20:40 itunesstored[97] <Warning>: LaunchServices: installing app for existing placeholder LSApplicationProxy: com.myapp.app (Placeholder)
Jul 2 18:20:40 backboardd[28] <Warning>: pid_suspend failed for [325]: Unknown error: -1, Unknown error: -1
Jul 2 18:20:40 com.apple.launchd[1] <Notice>: (UIKitApplication:com.myapp.app[0x11d1]) Exited: Killed: 9
Jul 2 18:20:40 backboardd[28] <Warning>: Application 'UIKitApplication:com.myapp.app[0x11d1]' exited abnormally with signal 9: Killed: 9
Jul 2 18:20:40 networkd[81] <Warning>: No attributes found for PID=325
Jul 2 18:20:40 itunesstored[97] <Warning>: LaunchServices: Creating installProgressForApplication:LSApplicationProxy: com.myapp.app (Placeholder) withPhase:1
Jul 2 18:20:40 lsd[76] <Warning>: LaunchServices: Updating installPhase for parent <NSProgress: phase=Loading; state=Active; fractionCompleted=0.579990> to 1
Jul 2 18:20:40 installd[63] <Notice>: 0x283000 handle_install_for_ls: Install of "/var/mobile/Media/Downloads/1823728027110056877/-3508334369307939928" requested by itunesstored
Jul 2 18:20:41 installd[63] <Notice>: 0x283000 MobileInstallationInstall_Server: Installing app com.myapp.app
Jul 2 18:20:41 installd[63] <Notice>: 0x283000 MobileInstallationInstall_Server: Staging: 1.03s; Waiting: 0.00s; Installation: 0.38s; LS Sync: 0.00s; Overall: 1.41s
Jul 2 18:20:41 lsd[76] <Warning>: LaunchServices: Updating identifier store
Jul 2 18:20:41 itunesstored[97] <Warning>: LaunchServices: installPhaseFinishedForProgress: com.myapp.app.Installing - <NSProgress: phase=Installing; state=Finished; fractionCompleted=1.000000> called, removing progress from cache
Jul 2 18:20:41 lsd[76] <Warning>: LaunchServices: installation ended for app com.myapp.app
Jul 2 18:20:42 lsd[76] <Warning>: LSInstallProgress: In observeValueForKeyPath:fractionCompleted could not find parent progress for com.myapp.app, it may have been removed
Jul 2 18:20:42 SpringBoard[33] <Error>: libMobileGestalt MobileGestalt.c:835: nike-ipod is static and will never generate a notification
Jul 2 18:20:42 SpringBoard[33] <Error>: libMobileGestalt MobileGestalt.c:835: still-camera is static and will never generate a notification
Jul 2 18:20:42 SpringBoard[33] <Error>: libMobileGestalt MobileGestalt.c:835: magnetometer is static and will never generate a notification
Jul 2 18:20:42 SpringBoard[33] <Error>: libMobileGestalt MobileGestalt.c:835: any-telephony is static and will never generate a notification
Jul 2 18:20:42 SpringBoard[33] <Error>: libMobileGestalt MobileGestalt.c:835: stand-alone-contacts is static and will never generate a notification
Jul 2 18:20:42 kernel[0] <Debug>: launchd[331] Container: /private/var/mobile/Applications/2493C106-296D-459B-9499-3CFE5FC05BFB (sandbox)
Jul 2 18:20:42 com.apple.launchd[1] <Notice>: (UIKitApplication:com.myapp.app[0x9d25]) Exited: Killed: 9
Jul 2 18:20:42 com.apple.launchd[1] <Notice>: (UIKitApplication:com.myapp.app[0x9d25]) Throttling respawn: Will start in 2147483647 seconds
Jul 2 18:20:42 backboardd[28] <Warning>: Application 'UIKitApplication:com.myapp.app[0x9d25]' exited abnormally with signal 9: Killed: 9
Jul 2 18:20:42 networkd[81] <Warning>: No attributes found for PID=331
Jul 2 18:20:42 itunesstored[97] <Warning>: LaunchServices: installPhaseFinishedForProgress: com.myapp.app.Loading - <NSProgress: phase=Loading; state=Finished; fractionCompleted=1.000000> called, removing progress from cache
Jul 2 18:20:42 lsd[76] <Warning>: LSInstallProgress: In observeValueForKeyPath:userInfo.installState could not find parent progress for com.myapp.app, it may have been removed
Jul 2 18:
据我所知，这是iOS的正常行为（我检查其他应用程序的更新，看到它们在更新期间也被杀死）。
11:23 Jul 3 11:18:14 Sergey-Demchekos-iPhone SpringBoard[33] <Warning>: Killing ua.slando for app installation
11:23 Jul 3 11:18:16 Sergey-Demchekos-iPhone SpringBoard[33] <Warning>: Killing com.tripomatic.spainportugalapp for app installation
11:23 Jul 3 11:18:20 Sergey-Demchekos-iPhone SpringBoard[33] <Warning>: Killing com.pineapple.Tenerife for app installation
现在的问题。首先，我对这些线路感到有点困惑。这是否意味着我在杀死应用程序时遇到了问题，我必须解决这个问题？：
Jul 2 18:20:30 SpringBoard[33] <Warning>: Killing com.myapp.app for app installation
Jul 2 18:20:30 com.apple.launchd[1] <Notice>: (UIKitApplication:com.myapp.app[0xacc2]) Exited: Killed: 9
Jul 2 18:20:30 backboardd[28] <Warning>: Application 'UIKitApplication:com.myapp.app[0xacc2]' exited abnormally with signal 9: Killed: 9
其次，如果iOS杀死应用程序（顺便说一下它是VOIP），它将不再运行，直到用户在SpringBoard上显式运行它的图标。我是否有任何处理程序将在应用程序被杀之前调用，以便安排本地通知并提醒用户再次运行应用程序？