我有一个自定义类“Person”。
已创建多个Person对象并将其添加到名为'personArray'的NSMutableArray中。
然后我将其中一个传递给下一个视图，称为userView。
这些都已全部分配和初始化。
我使用的代码是：
[userView setPerson:[personArray objectAtIndex:indexPath.row]];
当我单击一个表行时，应用程序崩溃，在调试器中显示：
Loading program into debugger…
GNU gdb 6.3.50-20050815 (Apple version gdb-960) (Sun May 18 18:38:33 UTC 2008)
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 "i386-apple-darwin".warning: Unable to read symbols for "/System/Library/Frameworks/UIKit.framework/UIKit" (file not found).
warning: Unable to read symbols from "UIKit" (not yet mapped into memory).
warning: Unable to read symbols for "/System/Library/Frameworks/CoreGraphics.framework/CoreGraphics" (file not found).
warning: Unable to read symbols from "CoreGraphics" (not yet mapped into memory).
Program loaded.
sharedlibrary apply-load-rules all
Attaching to program: `/Users/rich/Library/Application Support/iPhone Simulator/User/Applications/C587B508-F75C-4D8A-9C17-86BF49C99B22/Twitter.app/Twitter', process 3792.
非常感谢任何帮助！
Rich：）
修改
我是从意外退出报告问题框中得到的：
Process: Twitter [4355]
Path: /Users/rich/Library/Application Support/iPhone Simulator/User/Applications/74BFCE7A-84FF-4D5D-80B7-1620F0D28A20/Twitter.app/Twitter
Identifier: Twitter
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [83]
Interval Since Last Report: 22503 sec
Crashes Since Last Report: 3
Per-App Interval Since Last Report: 0 sec
Per-App Crashes Since Last Report: 2
Date/Time: 2009-06-12 18:16:52.121 +0100
OS Version: Mac OS X 10.5.7 (9J61)
Report Version: 6
Anonymous UUID: 1C202A26-2A1A-4A4B-AAFA-59116B0EC46E
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000020
Crashed Thread: 0
Application Specific Information:
iPhone Simulator 1.0 (70), iPhone OS 2.0 (5A345)
Thread 0 Crashed:
0 libobjc.A.dylib 0x9344c688 objc_msgSend + 24
1 Twitter 0x00006843 -[UserViewController setPerson:] + 55 (UserViewController.m:56)
2 Twitter 0x000030bb -[RootViewController tableView:didSelectRowAtIndexPath:] + 261 (RootViewController.m:85)
3 UIKit 0x30a9cd92 -[UITableView(_UITableViewPrivate) _sendSelectionDidChange] + 97
4 UIKit 0x30aa3eb1 -[UITableView touchesEnded:withEvent:] + 411
5 UIKit 0x30a75c0b -[UIWindow sendEvent:] + 454
6 UIKit 0x30a65e07 -[UIApplication sendEvent:] + 269
7 UIKit 0x30a6522a _UIApplicationHandleEvent + 4407
8 GraphicsServices 0x31699522 SendEvent + 35
9 GraphicsServices 0x3169b88c PurpleEventTimerCallBack + 276
10 com.apple.CoreFoundation 0x90680595 CFRunLoopRunSpecific + 3141
11 com.apple.CoreFoundation 0x90680c78 CFRunLoopRunInMode + 88
12 GraphicsServices 0x31699d38 GSEventRunModal + 217
13 GraphicsServices 0x31699dfd GSEventRun + 115
14 UIKit 0x30a5dadb -[UIApplication _run] + 440
15 UIKit 0x30a68ce4 UIApplicationMain + 1258
16 Twitter 0x000028e4 main + 102 (main.m:14)
17 Twitter 0x00002852 start + 54
Thread 1:
0 libSystem.B.dylib 0x91d13286 mach_msg_trap + 10
1 libSystem.B.dylib 0x91d1aa7c mach_msg + 72
2 com.apple.CoreFoundation 0x9068004e CFRunLoopRunSpecific + 1790
3 com.apple.CoreFoundation 0x90680c78 CFRunLoopRunInMode + 88
4 WebCore 0x32a8a450 RunWebThread + 384
5 libSystem.B.dylib 0x91d44155 _pthread_start + 321
6 libSystem.B.dylib 0x91d44012 thread_start + 34
Thread 2:
0 libSystem.B.dylib 0x91d13286 mach_msg_trap + 10
1 libSystem.B.dylib 0x91d1aa7c mach_msg + 72
2 GraphicsServices 0x3169ce0a EventReceiveThread + 467
3 libSystem.B.dylib 0x91d44155 _pthread_start + 321
4 libSystem.B.dylib 0x91d44012 thread_start + 34
Thread 3:
0 libSystem.B.dylib 0x91d13286 mach_msg_trap + 10
1 libSystem.B.dylib 0x91d1aa7c mach_msg + 72
2 com.apple.CoreFoundation 0x9068004e CFRunLoopRunSpecific + 1790
3 com.apple.CoreFoundation 0x90680c78 CFRunLoopRunInMode + 88
4 com.apple.Foundation 0x92f78530 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 320
5 com.apple.Foundation 0x92f14e0d -[NSThread main] + 45
6 com.apple.Foundation 0x92f149b4 __NSThread__main__ + 308
7 libSystem.B.dylib 0x91d44155 _pthread_start + 321
8 libSystem.B.dylib 0x91d44012 thread_start + 34
Thread 4:
0 libSystem.B.dylib 0x91d13286 mach_msg_trap + 10
1 libSystem.B.dylib 0x91d1aa7c mach_msg + 72
2 com.apple.CoreFoundation 0x9068004e CFRunLoopRunSpecific + 1790
3 com.apple.CoreFoundation 0x90680c78 CFRunLoopRunInMode + 88
4 com.apple.CFNetwork 0x907c2298 CFURLCacheWorkerThread(void*) + 388
5 libSystem.B.dylib 0x91d44155 _pthread_start + 321
6 libSystem.B.dylib 0x91d44012 thread_start + 34
Thread 5:
0 libSystem.B.dylib 0x91d626fa select$DARWIN_EXTSN + 10
1 libSystem.B.dylib 0x91d44155 _pthread_start + 321
2 libSystem.B.dylib 0x91d44012 thread_start + 34
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x00494630 ebx: 0x9344cc8f ecx: 0x934fe514 edx: 0x00000000
edi: 0x004a8420 esi: 0x00000040 ebp: 0xbfffe0b8 esp: 0xbfffe078
ss: 0x0000001f efl: 0x00010206 eip: 0x9344c688 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
cr2: 0x00000020
Binary Images:
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0x10000 - 0x11fff +liboainject.dylib ??? (???) <0d83c3f81b6733d13a50867064b845dd> /Developer/Applications/Instruments.app/Contents/PlugIns/MemoryPlugin.bundle/Contents/Resources/liboainject.dylib
0x16000 - 0x16fff +libsimshim.dylib ??? (???) <f37682fd161d73a66f64118e79a844c0> /Developer/Library/PrivateFrameworks/InstrumentsPlugIn.framework/Resources/libsimshim.dylib
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0x257000 - 0x296ffe +libGLImage.dylib ??? (???) <6df300f534f23e8aeef39d5f2f730028> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib
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0x500000 - 0x543fe6 +libCGFreetype.A.dylib ??? (???) <5d1bec00b54062913bada794887f894a> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib
0x572000 - 0x599fe7 +libRIP.A.dylib ??? (???) <595f583c272aa909e840f93e644b5af8> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib
0x856000 - 0xe74fc2 +libGLProgrammability.dylib ??? (???) <1fca696da40a8fe2017deb05b0ca9f60> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/OpenGLES.framework/libGLProgrammability.dylib
0x30894000 - 0x308a0fff +AppSupport ??? (???) <7136ddcdd71ba8ac87a956711a7d3052> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/AppSupport.framework/AppSupport
0x30a54000 - 0x30c9dfe4 +UIKit ??? (???) <ed41052bca54b8707642ac44a3a72531> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/UIKit.framework/UIKit
0x30fce000 - 0x311d3fff com.apple.CoreGraphics 1.359.4 (???) <f58e36a5e01783887c3d4b6e3a0e62fc> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/CoreGraphics.framework/CoreGraphics
0x3124f000 - 0x3125dfff +OpenGLES ??? (???) <d132e8601dc84cd1a86f12eb5f1c6695> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/OpenGLES.framework/OpenGLES
0x31290000 - 0x31350ff3 +JavaScriptCore ??? (???) <ef23a07fd02335c6304c999c7c891f31> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore
0x31696000 - 0x3169eff1 +GraphicsServices ??? (???) <068d0945d990a619e47e5915c318903e> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x31707000 - 0x31747fe7 +ImageIO ??? (???) <d3a95af0a5939e11ea440f12904e7602> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/ImageIO.framework/ImageIO
0x3179c000 - 0x317dafef +libTIFF.dylib ??? (???) <9cb64be0480b2a32a9e5f5eb3f0cfda0> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/ImageIO.framework/libTIFF.dylib
0x318da000 - 0x318dcfff +IAP ??? (???) <6d754b165e29ec239f421fc9871720e3> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/IAP.framework/IAP
0x31b9a000 - 0x31bb2fff +AddressBook ??? (???) <f341118239be07ba49db806c49fe5f8d> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/AddressBook.framework/AddressBook
0x31e7f000 - 0x31ef3fe7 +QuartzCore ??? (???) <6c4bfbe306a67a09ba333ae2041aa543> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/Frameworks/QuartzCore.framework/QuartzCore
0x326a4000 - 0x32b13fff +WebCore ??? (???) <6d001f5b0ea23a29efa0a52413954387> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/WebCore.framework/WebCore
0x32dd5000 - 0x32e44ff1 +WebKit ??? (???) <e0b7d6aeeed7ca9f595331868c55a14e> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/WebKit.framework/WebKit
0x33b25000 - 0x33b2cffd +SpringBoardServices ??? (???) <c051be030a97bd82cbc95ac04b4802e9> /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator2.0.sdk/System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices
0x8fe00000 - 0x8fe2db43 dyld 97.1 (???) <100d362e03410f181a34e04e94189ae5> /usr/lib/dyld
0x90003000 - 0x90027fff libxslt.1.dylib ??? (???) <0a9778d6368ae668826f446878deb99b> /usr/lib/libxslt.1.dylib
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0x907bf000 - 0x90863fec com.apple.CFNetwork 438.10 (438.12) <fde64bbb20532794396fb21911ccaa98> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
0x908f9000 - 0x909daff7 libxml2.2.dylib ??? (???) <068cab13eb4608a7c6a5fad807ee0e33> /usr/lib/libxml2.2.dylib
0x90a20000 - 0x90aa7ff7 libsqlite3.0.dylib ??? (???) <3334ea5af7a911637413334154bb4100> /usr/lib/libsqlite3.0.dylib
0x91d12000 - 0x91e79ff3 libSystem.B.dylib ??? (???) <b47c8e6e45aef620730710a732bf1930> /usr/lib/libSystem.B.dylib
0x92194000 - 0x92194ffa com.apple.CoreServices 32 (32) <2760719f7a81e8c2bdfd15b0939abc29> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x92195000 - 0x9219cfe9 libgcc_s.1.dylib ??? (???) <28a7cbc3a5ca2982d124668306f422d9> /usr/lib/libgcc_s.1.dylib
0x92570000 - 0x92586fff com.apple.DictionaryServices 1.0.0 (1.0.0) <7e9ff586b5c9d02b09e2a5527d98524f> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/DictionaryServices.framework/Versions/A/DictionaryServices
0x92593000 - 0x926ccff7 libicucore.A.dylib ??? (???) <cac059ebdac7d9a63ee0f7a648c9f6cf> /usr/lib/libicucore.A.dylib
0x92a4c000 - 0x92a6afff libresolv.9.dylib ??? (???) <b5b1527c2d99495ad5d507ab0a4ea872> /usr/lib/libresolv.9.dylib
0x92e33000 - 0x92ebfff7 com.apple.framework.IOKit 1.5.2 (???) <97b9f9d584f48891377f0481b9104434> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x92f0a000 - 0x93186fe7 com.apple.Foundation 6.5.8 (677.24) <aa84b0383891378c348ffa4a94853082> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x932f4000 - 0x932fbffe libbsm.dylib ??? (???) <5582985a86ea36504cca31788bccf963> /usr/lib/libbsm.dylib
0x93437000 - 0x93517fff libobjc.A.dylib ??? (???) <7b92613fdf804fd9a0a3733a0674c30b> /usr/lib/libobjc.A.dylib
0x93d17000 - 0x93d74ffb libstdc++.6.dylib ??? (???) <6106b1f2b0b303b06ae476253dbb5f3f> /usr/lib/libstdc++.6.dylib
0x941a0000 - 0x941a8fff com.apple.DiskArbitration 2.2.1 (2.2.1) <75b0c8d8940a8a27816961dddcac8e0f> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
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0x951e0000 - 0x951eeffd libz.1.dylib ??? (???) <545ca09467025f77131cfac09d8b9375> /usr/lib/libz.1.dylib
0x95f97000 - 0x96016ff5 com.apple.SearchKit 1.2.1 (1.2.1) <3140a605db2abf56b237fa156a08b28b> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
0x9601c000 - 0x96047fe7 libauto.dylib ??? (???) <42d8422dc23a18071869fdf7b5d8fab5> /usr/lib/libauto.dylib
0x96049000 - 0x9621affb com.apple.security 5.0.5 (36371) <c13e0bb1acfdcf94be4d3ee118ef190e> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x96420000 - 0x964acff7 com.apple.LaunchServices 290.3 (290.6) <bdba267184df88bd5b8e2116ea903872> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices
0x964ad000 - 0x964b1fff libmathCommon.A.dylib ??? (???) /usr/lib/system/libmathCommon.A.dylib
0x968cc000 - 0x96ba6ff3 com.apple.CoreServices.CarbonCore 786.11 (786.13) <9e2d85d52e5e2951aa4dd53c48ccc52f> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
0x96bc0000 - 0x96beffe3 com.apple.AE 402.3 (402.3) <b13bfda0ad9314922ee37c0d018d7de9> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.framework/Versions/A/AE
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib
这有帮助吗？
谢谢Rich
答案 0 :(得分：5)
刚出门，但是你确定在创建它时将nil添加为数组中的最后一个元素吗？
NSMutableArray * array = [NSMutableArray arrayWithObjects：@“one”，@“two”，@“three”，@“four”，nil];
答案 1 :(得分：1)
我也一直在打这样的消息，这通常是因为程序试图访问已经发布的一些内存位置。
确保你的userView setPerson方法保留了对象（并在dealloc中释放它）。
另外，你是如何创造＆amp;推你的第二视图控制器？它是一个实例变量还是每次都创建它？
答案 2 :(得分：1)
person，userView或personArray已被解除分配或personArray没有您想象的那么大。您需要设置断点以找出具体情况。
您应该遵循每个对象的整个生命周期，并确保它被正确保留。
您可以在自定义类中实现dealloc并在其中设置断点，并确保不会释放任何不应该分配的断点。
还可以尝试启用NSZombie以查看它是否收到任何消息。
答案 3 :(得分：0)
NSMutableArray在快速枚举循环中使用'addObject'添加了对象。
答案 4 :(得分：0)
在我看来像indexPath.row不是你想象的那样，并且正在请求一个超出范围的对象。
您是否尝试使用以下内容进行记录：
NSLog(@"personArraysize: %u, object I'm accessing: %@", [personArray count], indexPath.row);
[userView setPerson:[personArray objectAtIndex:indexPath.row]];
答案 5 :(得分：0)
答案 6 :(得分：0)
我遇到了同样的问题，我使用的是NSArray（结尾为nil），但每当我发送objectAtIndex它崩溃时，今天我发现了苹果的核心动画示例代码，它也使用了NSArray，初始化行如下： / p>
names = [[NSArray arrayWithObjects：@“Item 1”，@“Item 2”，@“Item 3”，@“Item 4”，@“Item 5”，nil] retain];
所以我想你应该这样做。