blocks|key|753719|text|在导航器选择栏中，单击放大镜，然后搜索"SWIFT_VERSION“，您将在项目中找到可以相应调整快速版本的位置。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|753720|​|753721|📷|atomic|753722|753723|753724|753725|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/e73acc00e24d279e7288432943bef71f.png|imageAlt|1|https://developer.qcloudimg.com/http-save/yehe-900000/77e074eb11ce7d658503ccc765b7e562.png^0|K|D|0|0|0|1|0|0|0|0|0|1|1|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|K|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|L|3|G|5|6|7|17|8|@]|D|@]|E|$]]|$1|M|3|I|5|J|7|18|8|@]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|N|3|-4|5|6|7|1C|8|@]|D|@]|E|$]]]|O|$P|$5|Q|R|S|E|$T|U|V|-4]]|W|$5|Q|R|S|E|$T|X|V|-4]]]]

In the navigator selection bar, click the magnifying glass, then search for "<code>SWIFT_VERSION</code>" You will find the places in the project where you can adjust the swift version accordingly. 

<a href="https://i.stack.imgur.com/ROiEb.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ROiEb.png" alt="enter image description here"></a>

<a href="https://i.stack.imgur.com/FdC44.png" rel="noreferrer"><img src="https://i.stack.imgur.com/FdC44.png" alt="enter image description here"></a>

blocks|key|1706669|text|XCode+8.2是支持SWIFT2.3的最后一个版本。您必须更新到Swift+3或使用Xcode+8.2。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1706670|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|$]]

You can't. XCode 8.2 was the last version to support Swift 2.3. You have to either update to Swift 3 or use Xcode 8.2.

blocks|key|1752489|text|在我的例子中，我选择了pod，并为特定的Pod更改了快速版本。这对我有用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1752490|​|1752491|📷|atomic|offset|length|1752492|1752493|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/7e091197edf40a77e6a491fad0fedea8.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

In My case 
I selected Pod and changed swift version for specific pod. This works for me.

<a href="https://i.stack.imgur.com/ON6E7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ON6E7.png" alt="enter image description here"></a>

blocks|key|1705475|text|若要以编程方式更改pods的快速版本，可以将其添加到Podfile中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1705476|post_install+do+%7Cinstaller%7C
++++installer.pods_project.targets.each+do+%7Ctarget%7C
++++++++if+['Alamofire','OtherPod','AnotherPod'].include?+target.name
++++++++++++target.build_configurations.each+do+%7Cconfig%7C
++++++++++++++++config.build_settings['SWIFT_VERSION']+=+'4.0'
++++++++++++end
++++++++end
++++end
end|code-block|syntax|javascript|1705477|在Swift+4中，如果您也使用了objective，|1705478|您可以打开@objc推断，这样快速项目就可以在objective上正常运行。|1705479|post_install+do+%7Cinstaller%7C
++++installer.pods_project.targets.each+do+%7Ctarget%7C
++++++++if+['Alamofire','OtherPod','AnotherPod'].include?+target.name
++++++++++++target.build_configurations.each+do+%7Cconfig%7C
++++++++++++++++config.build_settings['SWIFT_SWIFT3_OBJC_INFERENCE']+=+'On'
++++++++++++end
++++++++end
++++end
end|1705480|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

To programmatically change swift version of pods, you may add this inside your Podfile

<pre><code>post_install do |installer|
 installer.pods_project.targets.each do |target|
 if ['Alamofire','OtherPod','AnotherPod'].include? target.name
 target.build_configurations.each do |config|
 config.build_settings['SWIFT_VERSION'] = '4.0'
 end
 end
 end
end
</code></pre>

In Swift 4, if you are using objective-c as well,

you may turn on @objc inference so the swift project will run properly on objective-c.

<pre><code>post_install do |installer|
 installer.pods_project.targets.each do |target|
 if ['Alamofire','OtherPod','AnotherPod'].include? target.name
 target.build_configurations.each do |config|
 config.build_settings['SWIFT_SWIFT3_OBJC_INFERENCE'] = 'On'
 end
 end
 end
end
</code></pre>

blocks|key|753603|text|您不能因为XCode+8.2是支持SWIFT2.3的最后一个版本。您必须将代码更新为Swift+3或使用Xcode+8.2。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|753604|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|$]]

You cannot as XCode 8.2 was the last version to support Swift 2.3. You will have to either update your code to Swift 3 or use Xcode 8.2.

blocks|key|753640|text|该死的Xcode，现在我必须迁移到SWIFT3.0。它清楚地显示了在使用Swift+2.3打开或构建旧项目时发出的警告，因此我建议我们迁移:(：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|753641|​|753642|📷|atomic|offset|length|753643|753644|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/11498da8f81f3cc4024e2289ee72187f.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Damn you Xcode, now I have to migrate to Swift 3.0. It clearly shows up this alert on opening or building an old project with Swift 2.3 so I suggest lets migrate :( :(

<a href="https://i.stack.imgur.com/I08Ky.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I08Ky.png" alt="enter image description here"></a>

blocks|key|1752458|text|在生成设置中将Swift语言版本更改为受支持的版本|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1752459|​|1752460|📷|atomic|offset|length|1752461|1752462|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/633d4e238759b3ac5f2fc52d70fc3f7c.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Change the Swift Language Version to supported version in Build settings

<a href="https://i.stack.imgur.com/DUGWI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DUGWI.png" alt="enter image description here"></a>

blocks|key|753846|text|更新后，它适用于我：|type|blockquote|depth|inlineStyleRanges|entityRanges|data|753847|步骤1:转到您的ios文件夹并打开podfile并做以下简单的更改；|unstyled|offset|length|style|BOLD|753848|第一项改变：|753849|target+'Runner'+do
++++++use_frameworks!+#+<---+add+this+single+line
++++++#+Prepare+symlinks+folder.+We+use+symlinks+to+avoid+having+Podfile.lock
++++++#+referring+to+absolute+paths+on+developers'+machines.
++++++system('rm+-rf+.symlinks')
++++++system('mkdir+-p+.symlinks/plugins')|code-block|syntax|javascript|753850|第二项变动：|753851|post_install+do+%7Cinstaller%7C
++installer.pods_project.targets.each+do+%7Ctarget%7C
++++target.build_configurations.each+do+%7Cconfig%7C
++++++config.build_settings['ENABLE_BITCODE']+=+'NO'
++++++config.build_settings['SWIFT_VERSION']+=+'3.2'+#+<---+add+this+single+line
++++end
++end
end|753852|步骤2:从Xcode打开当前的工作项目，即转到ios文件夹并打开yourProjectName.xcworkspace文件；|753853|Add+an+empty+Swift+file+to+your+Flutter+iOS+project+in+Xcode+and+accept+to+add+bridging+header.|753854|步骤3:使用打开终端并使用下面的命令重新安装；|753855|pod+install|753856|如果项目已经打开，然后关闭它并再次打开，即yourProjectName.xcworkspace文件，清理和构建。|753857|entityMap^0|0|0|4|0|0|0|0|0|0|4|0|0|0|6|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|16|8|@$E|17|F|18|G|H]]|9|@]|A|$]]|$1|I|3|J|5|D|7|19|8|@]|9|@]|A|$]]|$1|K|3|L|5|M|7|1A|8|@]|9|@]|A|$N|O]]|$1|P|3|Q|5|D|7|1B|8|@]|9|@]|A|$]]|$1|R|3|S|5|M|7|1C|8|@]|9|@]|A|$N|O]]|$1|T|3|U|5|D|7|1D|8|@$E|1E|F|1F|G|H]]|9|@]|A|$]]|$1|V|3|W|5|M|7|1G|8|@]|9|@]|A|$N|O]]|$1|X|3|Y|5|D|7|1H|8|@$E|1I|F|1J|G|H]]|9|@]|A|$]]|$1|Z|3|10|5|M|7|1K|8|@]|9|@]|A|$N|O]]|$1|11|3|12|5|D|7|1L|8|@]|9|@]|A|$]]|$1|13|3|-4|5|D|7|1M|8|@]|9|@]|A|$]]]|14|$]]

<blockquote>
 Updated, It works for me:
</blockquote>

Step 1:
Go to your ios folder and open podfile and do below simple changes;

first change:

<pre><code>target 'Runner' do
 use_frameworks! # &lt;--- add this single line
 # Prepare symlinks folder. We use symlinks to avoid having Podfile.lock
 # referring to absolute paths on developers' machines.
 system('rm -rf .symlinks')
 system('mkdir -p .symlinks/plugins')
</code></pre>

second changes:

<pre><code>post_install do |installer|
 installer.pods_project.targets.each do |target|
 target.build_configurations.each do |config|
 config.build_settings['ENABLE_BITCODE'] = 'NO'
 config.build_settings['SWIFT_VERSION'] = '3.2' # &lt;--- add this single line
 end
 end
end
</code></pre>

Step 2:
Open your current working project from Xcode i.e. Go to ios folder and open yourProjectName.xcworkspace file;

<pre><code>Add an empty Swift file to your Flutter iOS project in Xcode and accept to add bridging header.
</code></pre>

Step 3:
 Open Terminal and again install using below command;

<pre><code>pod install
</code></pre>

If project already open then close it and open again i.e yourProjectName.xcworkspace file , clean and build.

I just did the last Xcode update (8.3), and I have the message : 

“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.

Knowing that the "Use Legacy Swift Language Version" option has just been removed from the build settings, how can I generate my app in Swift 2.3 without doing any conversion for now ?

“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift

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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我刚刚做了最后一次Xcode更新(8.3)，我收到了以下消息：“Swift语言版本”(SWIFT_VERSION)需要为使用Swift的目标正确配置。使用编辑>转换>到当前Swift语法…菜单可选择Swift版本或使用“生成设置”编辑器直接配置生成设置。知道“使用传统Swift语言版本”选项刚刚从构建设置中删除，我如何在Swift 2.3中生成我的应用程序而不进行任何转换？

问需要为使用Swift的目标正确配置“Swift语言版本”(SWIFT_VERSION)
EN

回答 8

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