blocks|key|2841485|text|在弹出屏幕上更改构建工具版本之后|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2841486|+26.0.1+changed+into+26.0.3+++//+else+selected+the+highest+available+version|code-block|syntax|javascript|2841487|然后单击确定开始为我工作...|2841488|(或)|2841489|只需重新启动Andoid+Studio+File->Invalidate+Caches+and+restart即可|CODE|2841490|entityMap^0|8|6|0|0|0|0|6|D|K|Z|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|W|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|X|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|Y|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|Q]]|D|@]|E|$]]|$1|R|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|S|$]]

After changing Build Tool Version on the pop screen 

<pre><code> 26.0.1 changed into 26.0.3 // else selected the highest available version
</code></pre>

then click OK started working for me...

(or)

Simply Restart Andoid Studio <code>File-&gt;Invalidate Caches and restart</code>

blocks|key|100038|text|3.1.2或更新版本的的修复程序|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|100039|我在Android+studio+3.1.2上遇到了同样的问题，但简单的同步不适用于me.The解决方案有点不同:我转到|100040|100041|文件->无效缓存->无效缓存|ordered-list-item|100042|100043|​|100044|📷|atomic|100045|100046|在Android+Studio项目选择器窗口中，|100047|File+->+Close+|100048|项目。|100049|退出Android+Studio(X)|100050|Start+Android+studio并重新打开项目|100051|100052|100053|100054|100055|100056|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/abfec889e503c6447435c939a3afca68.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/50dfffbcbc3949982cf411b41c05e781.png^0|C|4|0|0|1O|0|0|0|E|0|0|0|1|0|0|1|0|1|0|0|0|1|0|0|O|0|0|E|1|0|3|1|0|J|1|0|R|1|0|0|0|1|0|0|1|0|1|1|0|0|1|0^^$0|@$1|2|3|4|5|6|7|1I|8|@$9|1J|A|1K|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|1L|8|@$9|1M|A|1N|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]|$1|I|3|J|5|K|7|1P|8|@$9|1Q|A|1R|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]|$1|M|3|N|5|6|7|1T|8|@$9|1U|A|1V|B|C]]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1W|8|@$9|1X|A|1Y|B|C]]|D|@$9|1Z|A|20|1|21]]|E|$]]|$1|R|3|N|5|6|7|22|8|@$9|23|A|24|B|C]]|D|@]|E|$]]|$1|S|3|T|5|6|7|25|8|@$9|26|A|27|B|C]]|D|@]|E|$]]|$1|U|3|V|5|K|7|28|8|@$9|29|A|2A|B|C]]|D|@]|E|$]]|$1|W|3|X|5|K|7|2B|8|@$9|2C|A|2D|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|K|7|2E|8|@$9|2F|A|2G|B|C]]|D|@]|E|$]]|$1|10|3|11|5|K|7|2H|8|@$9|2I|A|2J|B|C]]|D|@]|E|$]]|$1|12|3|-4|5|6|7|2K|8|@]|D|@]|E|$]]|$1|13|3|-4|5|6|7|2L|8|@]|D|@]|E|$]]|$1|14|3|N|5|6|7|2M|8|@$9|2N|A|2O|B|C]]|D|@]|E|$]]|$1|15|3|P|5|Q|7|2P|8|@$9|2Q|A|2R|B|C]]|D|@$9|2S|A|2T|1|2U]]|E|$]]|$1|16|3|N|5|6|7|2V|8|@$9|2W|A|2X|B|C]]|D|@]|E|$]]|$1|17|3|-4|5|6|7|2Y|8|@]|D|@]|E|$]]]|18|$19|$5|1A|1B|1C|E|$1D|1E|1F|-4]]|1G|$5|1A|1B|1C|E|$1D|1H|1F|-4]]]]

FIX FOR 3.1.2 OR NEWER VERSIONS

I faced the same issue on Android studio 3.1.2, but a simple Sync didn't work for me.The solution was a bit different:
I go to 

<ol>
<li>File -> Invalidate Caches -> Invalidate</li>
</ol>

<a href="https://i.stack.imgur.com/igwO7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/igwO7.png" alt="first step"></a>

<ol start="2">
<li>File -> Close Project.</li>
<li>Remove the project from the Android Studio project selector window.</li>
<li>Quit from Android Studio(X)</li>
<li>Start Android studio and open project again</li>
</ol>

<a href="https://i.stack.imgur.com/1xSMF.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1xSMF.png" alt="second step open project"></a>

blocks|key|2630131|text|我花了几个小时来解决这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2630132|2630133|blockquote|2630134|2630135|2630136|首先单击'Sync'+gradle+|unordered-list-item|offset|length|style|BOLD|2630137|，然后单击clean和rebuild应用程序|CODE|2630138|和invalidate+and+restart|2630139|2630140|entityMap^0|0|0|0|0|0|4|6|0|5|5|B|7|0|1|M|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|C|3|-4|5|D|7|X|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|G|3|H|5|I|7|10|8|@$J|11|K|12|L|M]]|9|@]|A|$]]|$1|N|3|O|5|I|7|13|8|@$J|14|K|15|L|P]|$J|16|K|17|L|P]]|9|@]|A|$]]|$1|Q|3|R|5|I|7|18|8|@$J|19|K|1A|L|P]]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|U|$]]

I consumed a few hours to fix this issue:

<blockquote>
 <ul>
 <li>First Click 'Sync' gradle </li>
 <li>Then <code>clean</code> and <code>rebuild</code> the application </li>
 <li>And <code>invalidate and restart</code></li>
 </ul>
</blockquote>

blocks|key|2630211|text|您可以先关闭此项目。然后删除所有临时文件和生成的文件，包括项目根目录中的.gradle、.idea、build以及app路径中的build。最后，重新启动您的项目，问题应该得到解决。祝你好运！|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|2630212|entityMap^0|C|4|10|7|18|5|1E|5|1L|3|1S|5|0^^$0|@$1|2|3|4|5|6|7|I|8|@$9|J|A|K|B|C]|$9|L|A|M|B|D]|$9|N|A|O|B|D]|$9|P|A|Q|B|D]|$9|R|A|S|B|D]|$9|T|A|U|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|V|8|@]|E|@]|F|$]]]|H|$]]

You can close this project first.
Then DELETE ALL temp file and generated file, 
including <code>.gradle</code>, <code>.idea</code>, <code>build</code> in your project's root directory and also <code>build</code> in <code>app</code> path.
Finally, restart your project, problem should be solved. Good Luck !

blocks|key|100030|text|在执行这两个adb命令之后，它对我来说也很好用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|100031|(1)+adb+kill-server|offset|length|style|BOLD|100032|(2)亚行启动服务器|100033|entityMap^0|0|0|J|0|0|A|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@$D|N|E|O|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@$D|Q|E|R|F|G]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

After executing these two adb commands, it also works fine for me. 

(1) adb kill-server

(2) adb start-server

blocks|key|2630239|text|我遇到了同样的问题，并尝试了上述所有方法，但都没有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2630240|我最终关闭了所有东西，并重新启动了我的Mac。|2630241|重新打开Android+Studio，一切恢复正常:)|2630242|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I had the same issue and tried all of the above and it did not help.

I ended up closing everything and rebooting my Mac.

Reopened Android Studio and it was back to normal :)

blocks|key|2841504|text|在build.gradle+(Module:+app)中，我将"compileSdkVersion+23"更改为26，然后它就可以工作了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2841505|也许对你来说也是如此。|2841506|entityMap^0|1|Q|V|M|1K|2|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Q|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

In <code>build.gradle (Module: app)</code> I changed <code>"compileSdkVersion 23"</code> to <code>26</code>
Then it works. 

Maybe also work for you.

blocks|key|100060|text|对我来说，解决方案是使用gradle文件进行同步项目。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|100061|​|100062|📷|atomic|100063|100064|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7b8c19d2fd68c2f019b7a058329f3529.png|imageAlt^0|M|5|0|0|1|0|0|1|0|1|0|0|0|1|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|10|8|@$9|11|A|12|B|C]]|D|@$9|13|A|14|1|15]]|E|$]]|$1|K|3|G|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|L|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S|T|-4]]]]

For me solution was to sync project with gradle files.

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

I am getting this error:

<blockquote>
 Please <code>configure</code> Android SDK
</blockquote>

Onclick of configure i getting one popup

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

Please configure Android SDK

Android Studio

服务器

Android

我收到此错误：请使用configure Android SDK单击configure I得到一个弹出窗口​​

问请配置Android SDK
EN

回答 8

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问请配置Android SDKEN

回答 8

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问请配置Android SDK
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