When I save massive data by NSUserDefaults (convert a lot of images into data), it take a long time, so i kill the app, and the strange things happened. When i reopen the app, it take the 'watchdog', and then crash. I got the crash log and find it is the NSUserDefaults problem.
This is the log:
Exception Type: EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: Namespace SPRINGBOARD, Code 0x8badf00d
Termination Description: SPRINGBOARD, scene-update watchdog transgression: com.das8848.www.TechnicianApp123 exhausted real (wall clock) time allowance of 10.00 seconds | ProcessVisibility: Background | ProcessState: Running | WatchdogEvent: scene-update | WatchdogVisibility: Foreground | WatchdogCPUStatistics: ( | "Elapsed total CPU time (seconds): 0.200 (user 0.200, system 0.000), 30% CPU", | "Elapsed application CPU time (seconds): 0.001, 0% CPU" | )
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libsystem_kernel.dylib 0x00000001e64ff9fc __ulock_wait + 8
1 libsystem_platform.dylib 0x00000001e657334c _os_unfair_lock_lock_slow + 220
2 CoreFoundation 0x00000001e6852d7c -[CFPrefsSource copyValueForKey:] + 40
3 CoreFoundation 0x00000001e69a37dc __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke + 40
4 CoreFoundation 0x00000001e68e4908 __108-[_CFXPreferences+ 620808 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke + 268
5 CoreFoundation 0x00000001e68e425c normalizeQuintuplet + 356
6 CoreFoundation 0x00000001e6850db4 -[_CFXPreferences+ 15796 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:] + 108
7 CoreFoundation 0x00000001e6851644 -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] + 152
8 CoreFoundation 0x00000001e69a609c _CFPreferencesCopyAppValueWithContainerAndConfiguration + 124
9 Foundation 0x00000001e72e840c -[NSUserDefaults+ 29708 (NSUserDefaults) objectForKey:] + 52
10 TechnicianApp 0x0000000102332f68 -[DAInspectViewController getLocalData:workBaseId:] + 1240936 (DAInspectViewController.m:204)
the code on DAInspectViewController.m:204 is:
NSData *arrData = [[NSUserDefaults standardUserDefaults]valueForKey:key];
So I want to know what wrong i have about this code.
Thanks.