blocks|key|743984|text|我在排除EXC_BAD_ACCESS故障时遇到了同样的问题，并且很难找到Xcode4.2(+iOS5+SDK附带的最新版本)的设置。苹果一直在移动东西，设置也不再是以前的样子了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|743985|幸运的是，我已经找到了它，它适用于设备，而不仅仅是模拟器。您需要在Xcode中打开Product菜单，选择Edit+scheme，然后选择Diagnostics选项卡。这里有“启用僵尸对象”。一旦选择并在调试器中运行，就会将您指向双重释放的对象！享受吧！|743986|总之|743987|Product->Edit+Scheme->Diagnostics->+Click+Enable+Zombie+Objects|code-block|syntax|javascript|743988|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I encountered the same problem with troubleshooting EXC_BAD_ACCESS and had hard time to find the setting with Xcode 4.2 (the latest one that comes with iOS5 SDK). Apple keeps on moving things and the settings are no longer where they used to be. 

Fortunately, I've found it and it works for the device, not just Simulator. You need to open the Product menu in the Xcode, select Edit scheme and then choose the Diagnostics tab. There you have "Enable Zombie Objects". Once selected and run in debugger will point you to the double released object! Enjoy!

In short

<pre><code>Product-&gt;Edit Scheme-&gt;Diagnostics-&gt; Click Enable Zombie Objects
</code></pre>

blocks|key|959765|text|产品>配置文件将启动Instruments，然后您将看到一个名为"Zombies“的"Trace+Template”。但是，此跟踪模板仅在当前构建目标是模拟器时才可用-如果将目标设置为iOS设备，则此跟踪模板将不可用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|959766|另外需要注意的是，仪表库中并没有真正的僵尸工具。僵尸跟踪模板实际上由具有"Enable+NSZombie+detection“启动配置集的分配工具组成。|959767|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Product > Profile will launch Instruments and then you there should be a "Trace Template" named "Zombies". However this trace template is only available if the current build destination is the simulator - it will not be available if you have the destination set to your iOS device.

Also another thing to note is that there is no actual Zombies instrument in the instrument library. The zombies trace template actually consists of the Allocations instrument with the "Enable NSZombie detection" launch configuration set.

blocks|key|743631|text|这是一个简单的问题，设置一个环境变量在你的可执行(NSZombieEnabled+=+YES)，然后运行/调试你的应用程序作为normal.If你的消息一个僵尸，你的应用程序将崩溃/中断调试器和NSLog为你的消息。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|743632|有关更多信息，请查看此CocoaDev页面：http://www.cocoadev.com/index.pl?NSZombieEnabled|743633|此外，随着10.6和Xcode和Instruments的下一个版本的发布，这个过程将变得更加容易。只是说“..。=)|743634|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cocoadev.com/index.pl?NSZombieEnabled^0|O|N|2P|5|0|M|1C|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|H|3|I|5|6|7|10|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|11|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]]]

It's a simple matter of setting an environment variable on your executable <code>(NSZombieEnabled = YES)</code>, and then running/debugging your app as normal.If you message a zombie, your app will crash/break to debugger and <code>NSLog</code> a message for you.

For more information, check out this CocoaDev page: <a href="http://www.cocoadev.com/index.pl?NSZombieEnabled" rel="nofollow noreferrer">http://www.cocoadev.com/index.pl?NSZombieEnabled</a>

Also, this process will become much easier with the release of 10.6 and the next versions of Xcode and Instruments. Just saying'. =)

blocks|key|743755|text|产品>配置文件将弹出Instruments。从面板中选择僵尸，然后疯狂。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|743756|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Product > Profile will pop up Instruments. Select zombies from the panel and go nuts.

blocks|key|743932|text|在xcode+4.2中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|743933|转到，产品->编辑方案->单击Run+yourappname.app+->诊断->启用僵尸对象。|743934|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

In xcode 4.2

Goto, Product -> edit scheme -> click Run yourappname.app -> Diagonostics -> Enable Zombie object.

blocks|key|743709|text|这是一段视频，并解释了如何使用仪器和NSZombie来查找和修复iOS上的内存崩溃：http://www.markj.net/iphone-memory-debug-nszombie/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|743710|entityMap|0|LINK|mutability|MUTABLE|url|http://www.markj.net/iphone-memory-debug-nszombie/^0|16|1E|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Here's a video and explaination how to use Instruments and NSZombie to find and fix memory crashes on iOS:
<a href="http://www.markj.net/iphone-memory-debug-nszombie/" rel="noreferrer">http://www.markj.net/iphone-memory-debug-nszombie/</a>

blocks|key|959573|text|从Xcode3.2.5和雪豹(MacOSX10.6)开始，你可以通过僵尸工具Run+>+Run+with+Performance+Tool+>+Zombies来运行你的代码。这允许您在时间轴上查看特定对象及其保留计数。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|959574|entityMap^0|12|15|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

As of Xcode 3.2.5 and Snow Leopard (Mac OS X 10.6), you can run your code through the Zombies instrument: <code>Run &gt; Run with Performance Tool &gt; Zombies</code>. That allows you to see particular objects and their retain counts on a timeline.

blocks|key|744109|text|在Xcode+4.5.2中，转到产品->编辑方案->，在诊断选项卡下，选中Objective+C和Enable+Zombie+Objects之间的复选框，然后单击OK|type|unstyled|depth|inlineStyleRanges|entityRanges|data|744110|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In Xcode 4.5.2 goto Product -> Edit Scheme -> and Under the Diagnostics tab check the check box in between Objective C and Enable Zombie Objects and Click on OK

blocks|key|959732|text|要启用僵尸日志记录，请双击Xcode项目的executable组中的可执行文件。此时，单击Arguments选项卡，并在Variables+to+be+set+in+the+environment:部分中创建一个名为NSZombieEnabled的变量，并将其值设置为YES。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|959733|entityMap^0|1O|13|30|F|3Q|3|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

To enable Zombie logging double-click the executable in the executables group of your Xcode project. At this point click the Arguments tab and in the <code>Variables to be set in the environment:</code> section, make a variable called <code>NSZombieEnabled</code> and set its value to <code>YES</code>.

blocks|key|959809|text|在XCode+4.0:要检测仪器中的NSZombie，请选择模拟器作为目标(无法检测设备上的NSZomboe+)。运行工具(CMD%2BI)并选择“僵尸”跟踪模板。好好享受吧。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|959810|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In XCode 4.0: To detect NSZombie in Instruments, select the Simulator as your target (can't detect NSZomboe on device). Run Instruments (CMD+I) and select "Zombies" trace template. Enjoy.

blocks|key|743784|text|在可执行文件的首选项中，添加环境变量NSZombieEnabled并将值设置为YES。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|743785|entityMap^0|I|F|13|3|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

In the preferences of your executable add the environment variable <code>NSZombieEnabled</code> and set the value to <code>YES</code>.

blocks|key|744014|text|在ur+XCODE+(4.3)中，单击play按钮:)+(运行)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|744015|选择:编辑方案|744016|将打开方案管理窗口|744017|单击Arguments选项卡|744018|您应该看到:+1-在启动时传递的参数2-环境变量|744019|在(2-环境变量)中，位置名称:+NSZombieEnabled|744020|取值:是|744021|然后就完成了..。|744022|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|W|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|X|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|Y|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|Q|$]]

in ur XCODE (4.3) next the play button :) (run) 

select : edit scheme

the scheme management window will open 

click on the Arguments tab 

you should see : 1- Arguments passed on launch
 2- environment variables

inside the the (2- environment variables) place 
Name: NSZombieEnabled 
Value: YES 

And its done....

blocks|key|744127|text|用于调试BAD_ACCESS的NSZombieEnabled，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|744128|从Xcode的方案表中启用NSZombiesEnabled环境变量。|744129|Click+on+Product⇒Edit+Scheme+to+open+the+sheet+and+set+the+Enable+Zombie+Objects+check+box|offset|length|style|CODE|744130|此video将帮助您理解我想要说的内容。|744131|entityMap|0|LINK|mutability|MUTABLE|url|http://www.youtube.com/watch?v=SUeATdeWZKs&list=PLrUFyg1unBb85La4kt3rbDw5sNJi4bwte&index=1^0|0|0|0|2I|0|1|5|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@$F|W|G|X|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|Y|8|@]|9|@$F|Z|G|10|1|11]]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

NSZombieEnabled is used for Debugging BAD_ACCESS,
enable the NSZombiesEnabled environment variable from Xcode’s schemes sheet.
<code>Click on Product⇒Edit Scheme to open the sheet and set the Enable Zombie Objects check box</code>
this <a href="http://www.youtube.com/watch?v=SUeATdeWZKs&amp;list=PLrUFyg1unBb85La4kt3rbDw5sNJi4bwte&amp;index=1" rel="nofollow noreferrer">video</a> will help you to see what i'm trying to say.

I have an app that is crashing with no error tracing. I can see part of what is going on if I debug, but can't figure out which object is "zombie-ing". 

Does anybody know how to enable NSZombie in Xcode 4?

How to enable NSZombie in Xcode?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个应用程序正在崩溃，没有错误跟踪。如果我调试，我可以看到正在发生的事情的一部分，但不能找出哪个对象是“僵尸”。有人知道如何在Xcode4中启用NSZombie吗？

问如何在Xcode中启用NSZombie？
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