ios应用程序在“锁定屏幕”时崩溃答案

【问题标题】：ios application crashes when "lock screen"ios应用程序在“锁定屏幕”时崩溃
【发布时间】：2011-03-16 16:21:23
【问题描述】：

标签栏应用程序有问题。一切正常，但如果我发送模拟器命令“锁屏”调试器控制台说应用程序崩溃了。会是什么？

调试器消息：

GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Sat Feb 12 02:52:12 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin".Attaching to process 407.
2011-03-16 23:35:59.084 Smokie[407:207] -[OverviewController applicationWillResignActive:]: unrecognized selector sent to instance 0x4e20650
2011-03-16 23:35:59.088 Smokie[407:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[OverviewController applicationWillResignActive:]: unrecognized selector sent to instance 0x4e20650'
*** Call stack at first throw:
(
•   0   CoreFoundation                      0x00dcb5a9 __exceptionPreprocess + 185
•   1   libobjc.A.dylib                     0x00f1f313 objc_exception_throw + 44
•   2   CoreFoundation                      0x00dcd0bb -[NSObject(NSObject) doesNotRecognizeSelector:] + 187
•   3   CoreFoundation                      0x00d3c966 ___forwarding___ + 966
•   4   CoreFoundation                      0x00d3c522 _CF_forwarding_prep_0 + 50
•   5   Foundation                          0x00025669 _nsnote_callback + 145
•   6   CoreFoundation                      0x00da39f9 __CFXNotificationPost_old + 745
•   7   CoreFoundation                      0x00d2293a _CFXNotificationPostNotification + 186
•   8   Foundation                          0x0001b20e -[NSNotificationCenter postNotificationName:object:userInfo:] + 134
•   9   UIKit                               0x002bc0a8 -[UIApplication _setActivated:] + 334
•   10  UIKit                               0x002bf905 -[UIApplication _handleApplicationSuspend:eventInfo:] + 292
•   11  UIKit                               0x002c9039 -[UIApplication handleEvent:withNewEvent:] + 4127
•   12  UIKit                               0x002c0abf -[UIApplication sendEvent:] + 71
•   13  UIKit                               0x002c5f2e _UIApplicationHandleEvent + 7576
•   14  GraphicsServices                    0x01723992 PurpleEventCallback + 1550
•   15  CoreFoundation                      0x00dac944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 52
•   16  CoreFoundation                      0x00d0ccf7 __CFRunLoopDoSource1 + 215
•   17  CoreFoundation                      0x00d09f83 __CFRunLoopRun + 979
•   18  CoreFoundation                      0x00d09840 CFRunLoopRunSpecific + 208
•   19  CoreFoundation                      0x00d09761 CFRunLoopRunInMode + 97
•   20  GraphicsServices                    0x017221c4 GSEventRunModal + 217
•   21  GraphicsServices                    0x01722289 GSEventRun + 115
•   22  UIKit                               0x002c9c93 UIApplicationMain + 1160
•   23  Smokie                              0x00001c30 main + 102
•   24  Smokie                              0x00001bc1 start + 53
)
terminate called after throwing an instance of 'NSException'
sharedlibrary apply-load-rules all
Current language:  auto; currently objective-c
(gdb)

【问题讨论】：

我们需要多一点，你能从控制台给我们错误消息吗？
当然。 2-3 小时后我会添加错误信息，谢谢你的帮助。

标签： iphone xcode ios ios-simulator

【解决方案1】：

由于某种原因，从问题中不清楚，一个 OverviewController 的实例在 UIApplicationDelegate 应该在的地方。可能与 MainWindow xib 中的网点混淆？在 Main Windo xib 中，应将 UIApplication 实例中的“delegate”插座分配给 UIApplicationDelegate。是这样吗？

我这样说是因为错误是由方法 applicationWillResignActive: 在 OverviewController 上调用但未找到引起的。 applicationWillResignActive：是应用程序在锁定前在应用程序委托中调用的方法。

【讨论】：