blocks|key|4392945|text|请查看此链接(Running+react-native+run-ios+occurs+an+error?)。这似乎是Command+line+tools的位置问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4392946|在Xcode中，依次选择Xcode菜单、首选项和位置选项卡。从下拉列表中选择您的Xcode版本并退出Xcode。|4392947|​|4392948|📷|atomic|4392949|4392950|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/facebook/react-native/issues/7965|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/f720f2a00dd92ca0c5eb711e55478a0a.png|imageAlt^0|1M|I|7|19|0|0|0|0|0|1|1|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@$9|14|A|15|1|16]]|E|$]]|$1|F|3|G|5|6|7|17|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|18|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|19|8|@]|D|@$9|1A|A|1B|1|1C]]|E|$]]|$1|M|3|I|5|6|7|1D|8|@]|D|@]|E|$]]|$1|N|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|O|$P|$5|Q|R|S|E|$T|U]]|V|$5|W|R|X|E|$Y|Z|10|-4]]]]

Check out this link (<a href="https://github.com/facebook/react-native/issues/7965" rel="noreferrer">Running react-native run-ios occurs an error?</a>). It appears to be a problem with the location of <code>Command line tools</code>.

In Xcode, select Xcode menu, then Preferences, then Locations tab. Select your Xcode version from the dropdown and exit Xcode.

<a href="https://i.stack.imgur.com/M6w7Q.png" rel="noreferrer"><img src="https://i.stack.imgur.com/M6w7Q.png" alt="XCode location tab"></a>

blocks|key|4392998|text|在我的例子中，问题是没有安装Xcode。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4392999|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 my case the problem was that Xcode was not installed.

blocks|key|4393310|text|在第一次安装之后，我必须接受XCode许可，然后才能运行它。您可以通过命令行运行以下命令来获取许可提示符。您必须键入agree并进行确认。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4393311|sudo+xcodebuild+-license|code-block|syntax|javascript|4393312|entityMap^0|1M|5|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I had to accept the XCode license after my first install before I could run it. You can run the following to get the license prompt via command line. You have to type <code>agree</code> and confirm as well.

<pre><code>sudo xcodebuild -license
</code></pre>

blocks|key|4393485|text|对于在Xcode13中遇到此问题的任何人(像我)，更新--+instruments命令已被删除。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4393486|更新到package.json文件中的最新版本的react-native将不再尝试使用instruments命令。|4393487|entityMap^0|U|B|0|3|C|O|C|17|B|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

An update for anybody (like me) who's run into this in Xcode 13 -- the <code>instruments</code> command has been removed.
Updating to the latest version of <code>react-native</code> in your <code>package.json</code> file will no longer try to use the <code>instruments</code> command.

blocks|key|4393462|text|问题是您的Xcode版本不是在命令行工具上设置的，要解决此问题，请在此处为命令行工具打开Xcode>Menu>preferences>+location>选择您的Xcode版本，仅此而已。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4393463|📷|atomic|offset|length|4393464|​|4393465|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/51e28cfdfc55429fc79a1b6929bbd530.png|imageAlt^0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|S|8|@]|9|@$E|T|F|U|1|V]]|A|$]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P|Q|-4]]]]

Problem is your Xcode version is not set on Command Line Tools, to solve this problem open Xcode>Menu>preferences> location> here for Command Line tools select your Xcode version, that's it. <a href="https://i.stack.imgur.com/fvWo9.png" rel="noreferrer"><img src="https://i.stack.imgur.com/fvWo9.png" alt="enter image description here"></a>

blocks|key|4393353|text|对于那些像我一样在更新Xcode后带着这个问题来到这个页面，但在位置设置上没有问题的人，重新启动我的计算机确实起到了作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4393354|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|$]]

For those like me who come to this page with this problem after updating Xcode but don't have an issue with the location setting, restarting my computer did the trick.

blocks|key|4393415|text|对我来说，原来有一个iOS系统更新等待重启计算机。重启并让更新完成，解决了我的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4393416|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|$]]

For me, it turns out that there was an iOS system update pending asking to restart the computer. Restart and let the update finish solved my problem.

blocks|key|4393076|text|在我的例子中，SDKROOT环境变量是错误的，它引用了旧版本的iPhoneOSxx.x.sdk。(也许这会在重新启动后自动解决？)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4393077|您可以通过运行echo+$SDKROOT并验证它是否为有效路径来进行检查。|offset|length|style|CODE|4393078|我通过在.bash_profile中更新来修复它：|4393079|export+SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk|code-block|syntax|javascript|4393080|entityMap^0|0|7|D|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|V|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

In my case the SDKROOT environment variable was wrong, which referred to an old version of iPhoneOSxx.x.sdk. (Perhaps this would have automatically resolved itself after a reboot?)

You can check by running <code>echo $SDKROOT</code> and verifying that it's a valid path.

I fixed it by updating in .bash_profile:

<pre><code>export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS11.2.sdk
</code></pre>

I am following the tutorial on the official React Native website.

Using the following to build my project:

<pre><code>react-native run-ios
</code></pre>

I get the error:

<pre><code>Found Xcode project TestProject.xcodeproj
xcrun: error: unable to find utility "instruments", not a developer 
tool or in PATH

Command failed: xcrun instruments -s
xcrun: error: unable to find utility "instruments", not a developer 
tool or in PATH
</code></pre>

Although, when I run the app from the .xcodeproj, everything works fine.

Any suggestions?

Error Running React Native App From Terminal (iOS)

命令行工具

React Native

Xcode

我正在关注React Native官方网站上的教程。使用以下代码构建我的项目：react-native run-ios我得到了错误：Found Xcode project TestProject.xcodeprojxcrun: error: unable to find utility "instruments", not a developer   tool or in PATHCommand 

问从终端(iOS)运行React本机应用程序时出错
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