blocks|key|184825|text|我也遇到了同样的问题，我的解决方法如下|type|unstyled|depth|inlineStyleRanges|entityRanges|data|184826|184827|使用以下命令更新所有build.gradle文件：|ordered-list-item|184828|184829|类路径“com.android.tools.build:gradle:0.5.%2B”|184830|现在android+studio+0.2.%2B使用gradle0.5|184831|安卓工作室关闭集成开发环境并通过Terminal/Console|184832|Do+a+clean:+build|unordered-list-item|184833|
|184834|Assemble+$gradle+|184835|184836|Do+a+build:+Android+build|184837|184838|Assemble+it：$gradle+Android+Studio+$gradle+be+happy+;)|184839|184840|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|13|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|14|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|18|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|19|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1A|8|@]|9|@]|A|$]]|$1|R|3|S|5|O|7|1B|8|@]|9|@]|A|$]]|$1|T|3|Q|5|6|7|1C|8|@]|9|@]|A|$]]|$1|U|3|V|5|O|7|1D|8|@]|9|@]|A|$]]|$1|W|3|Q|5|6|7|1E|8|@]|9|@]|A|$]]|$1|X|3|Y|5|O|7|1F|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]]|11|$]]

I had the same problem and I solved as follow

<ol>
<li>Update all build.gradle files with:</li>
</ol>

classpath 'com.android.tools.build:gradle:0.5.+'

Now android studio 0.2.+ uses gradle 0.5

<ol>
<li>Closes de IDE and via Terminal/Console</li>
<li>Do a clean: $gradle clean</li>
<li>Do a build: $gradle build</li>
<li>Assemble it: $gradle assembleDebug</li>
<li>Open the Android Studio and be happy ;)</li>
</ol>

blocks|key|186837|text|也许使用0.3.6版本(最新)会更好，使用这个版本的gradle+:+com.android.tools.build:gradle:0.6.%2B|type|unstyled|depth|inlineStyleRanges|entityRanges|data|186838|请记住，Android+Studio将期待已经安装的Android+SDK+(我想您已经安装了)，以及环境变量ANDROID_HOME和GRADLE_HOME。|186839|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|$]]

Maybe it is better to use the 0.3.6 version (latest), with this version of gradle : com.android.tools.build:gradle:0.6.+

Bear in mind that Android Studio will be expecting the Android SDK already installed (as I suppose you have), and also the environment variables ANDROID_HOME and GRADLE_HOME.

blocks|key|3012311|text|尝尝这个|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3012312|3012313|Build>清理项目|ordered-list-item|3012314|Build>重建项目|3012315|3012316|这对我很管用|3012317|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|N|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|P|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|L|$]]

Try this 

<ol>
<li>Build> Clean Project</li>
<li>Build> Rebuild Project</li>
</ol>

It worked for me

blocks|key|184053|text|关闭android+studio，进入如下路径:+C:\Users\user\+.AndroidStudio1.2\restart有一个名为restarter的文件，双击它，再次打开android+studio，创建一个新项目并享受它|type|unstyled|depth|inlineStyleRanges|entityRanges|data|184054|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|$]]

Close android studio and go to path as follow:
C:\Users\user\ .AndroidStudio1.2\restart
There is a file named restarter,double click on it and open android studio again,create a new project and enjoy it

blocks|key|182599|text|尝试在SDK管理器中将API更新到最新版本-适用于我|type|unstyled|depth|inlineStyleRanges|entityRanges|data|182600|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|$]]

Try updating your API to the latest version in the SDK manager ---- worked for me

blocks|key|2800083|text|只需在布局预览上右键单击，然后单击|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2800084|Show+Included+in+contentmain.xml|code-block|syntax|javascript|2800085|您可以在下图中看到它|2800086|📷|atomic|offset|length|2800087|​|2800088|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/47246bbf8cdb6e657c49f6d45f46852f.png|imageAlt^0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|K|7|11|8|@]|9|@$L|12|M|13|1|14]]|A|$]]|$1|N|3|O|5|6|7|15|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W|X|-4]]]]

Just do a right click on the layout preview and click on

<pre><code>Show Included in contentmain.xml
</code></pre>

you can see it in the following image
<a href="https://i.stack.imgur.com/NoOLB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NoOLB.png" alt="enter image description here"></a>

blocks|key|2800103|text|按照以下步骤操作，我也遇到了同样的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2800104|先卸载旧的android+studio，在SDK+manager.|2800105|Install+Latest+Android+Studio+Canary+Build:+2.0+Preview+9|unordered-list-item|offset|length|2800106|
中删除C:\Users\yourpcname|2800107|update+|2800108|到最新版本的.androidstudio文件|2800109|2800110|2800111|完成|2800112|entityMap|0|LINK|mutability|MUTABLE|url|http://tools.android.com/download/studio/canary/latest^0|0|0|8|1D|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@$G|13|H|14|1|15]]|A|$]]|$1|I|3|J|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|17|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|18|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1B|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]]|T|$U|$5|V|W|X|A|$Y|Z]]]]

I had the same problem Follow this step :

<ul>
<li>First uninstall old android studio and delete .androidstudio file from C:\Users\yourpcname</li>
<li>update api to latest version in SDK manager.</li>
<li>Install <a href="http://tools.android.com/download/studio/canary/latest" rel="nofollow">Latest Android Studio Canary Build: 2.0 Preview 9</a></li>
</ul>

Done

blocks|key|2800122|text|在Android+Studio中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2800123|File>Invalidate缓存/重新启动|2800124|我就是这么修好的|2800125|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|$]]

In Android Studio

File>Invalidate Caches/Restart

that's how i fixed

blocks|key|3012432|text|您可以尝试：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3012433|3012434|选择预览窗口(关注该窗口)|ordered-list-item|3012435|3012436|3012437|取消选择浮动模式和固定模式|3012438|3012439|3012440|转到窗口->+Active+Tool窗口->+|3012441|3012442|3012443|3012444|3012445|3012446|现在您可以在此处看到停靠窗口选项(+window+->+Active+Tool+Window+->)|3012447|3012448|3012449|选择停靠窗口|3012450|3012451|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|13|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|14|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|16|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|17|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|18|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|19|8|@]|9|@]|A|$]]|$1|N|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|I|5|E|7|1C|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|S|3|T|5|E|7|1F|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1H|8|@]|9|@]|A|$]]|$1|W|3|X|5|E|7|1I|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Z|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|10|$]]

You can try : 

<ol>
<li>Select Preview window(Focus on it) </li>
<li>Unselect Floating mode and Pinned mode </li>
<li>goto Window -> Active Tool Window -> </li>
<li>Unselect Floating mode and Pinned mode </li>
<li>Now you can see Docked window option here(Window -> Active Tool Window ->) </li>
<li>Select Docked Window</li>
</ol>

I ported an android project from Eclipse to Android Studio. The project builds just fine. However I am not able to see any layout preview. When I go to the Design tab of a layout I get a 

<blockquote>
 Loading Configuration...
</blockquote>

message that never goes away (see image).

<img src="https://i.stack.imgur.com/t3b5M.png" alt="enter image description here">
 I have set correctly the Android SDK in the project structure.
This happens with all the xml files and I am not able to open the "Preview" window from 

<blockquote>
 View -> Tool Windows -> Preview
</blockquote>

I tried creating a new project and everything was showing fine. Am I missing something? Anyone faced a similar issue? Is there a chance that this is happening because the folder structure is not the default one? (The layouts are not under project/src/main/res/layout but under project/res/layout)

Layout preview not working in Android Studio

集成开发环境

Android Studio

Android

Eclipse

我将一个android项目从Eclipse移植到Android Studio。这个项目构建得很好。但是，我看不到任何布局预览。当我转到布局的设计选项卡时，我会看到一个正在加载配置...永远不会消失的信息(见图)。​我已经在项目结构中正确设置了Android SDK。所有的xml文件都会发生这种情况，我无法从打开"Pre...

问布局预览在Android Studio中不起作用
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