blocks|key|129776|text|这似乎是因为“代码”视图失去了对“项目”视图的关注。这就是为什么我不能编辑代码而出现搜索框的原因:因为焦点是永久的Project视图。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129777|我找不到一个永久的解决方案。然而，偶然的是，我发现了一个比重启Android+Studio更不令人讨厌的解决方法：|129778|129779|当焦点不在“项目”视图上时，单击“代码”视图最右侧的滚动条所在的位置。|blockquote|129780|129781|129782|我试图找出是什么原因导致项目视图永久地偷走了焦点，但我做不到，除非有人这样做，否则这将是公认的答案。|129783|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|Q|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|T|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|M|$]]

This appears to be that the Code view loses focus to the Project view. That's why I can't edit the code and the search box appears: because The focus is with the Project view, permanently.

I couldn't find a permanent solution. However, by accident, I found a workaround that is less annoying than restarting Android Studio:

<blockquote>
 When you lose focus to the Project view, click on the far right of the Code View, where the scrollbar exist. 
</blockquote>

I tried to figure out what causes the Project View to steal the focus permanently but I couldn't. Until someone do, this will be the accepted answer.

blocks|key|131407|text|单击垂直滚动条区域以在项目视图中获得焦点|type|unstyled|depth|inlineStyleRanges|entityRanges|data|131408|​|131409|📷|atomic|offset|length|131410|131411|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/ab7396a9e0dcb71680c5b9eec4338440.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]]]]

click on vertical scroll bar area to get focus in project view

<a href="https://i.stack.imgur.com/jFlPY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/jFlPY.png" alt="click on vertical scroll bar area to get focus in project view"></a>

blocks|key|129785|text|我在macox中也遇到了同样的问题。我被随机安装了一些插件，导致了这个错误。所以在移除vim编辑器(在我的例子中)之后，它工作得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129786|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|$]]

i was facing same problem in macox. i was installed some randomly plugins which cause this error. so after removing vim editor(in my case) it works fine.

blocks|key|129788|text|我也遇到了这个问题，但这是因为我关注的是模拟器中的EditText视图。我不能通过点击右边的滚动条让它工作。只有当我注意到光标在模拟器上，并点击tab时，我的编辑器才能再次工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129789|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|$]]

I had this problem as well, but it was because my focus was in an EditText view in the emulator. I could not get it to work by clicking the right scroll bar. It was only when I noticed the cursor n the emulator, and hit tab, did my editor work again.

blocks|key|129812|text|永久修复无法在Windows上的Android+Studio中编辑文件。执行以下步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129813|129814|关闭安卓studio。|ordered-list-item|129815|转到您的用户文件夹-在Windows7/8上为：|129816|129817|系统变量：\Usersyour+username|offset|length|129818|在这个文件夹中应该有一个名为.AndroidStudioBeta或.AndroidStudio的文件夹(注意开始处的句号-所以在某些OSes中它是隐藏的)。|129819|129820|删除此文件夹(或者更好的做法是将其移动到备份位置-以便在出现问题时可以将其还原)。|129821|129822|这应该会将您的Android+Studio设置重置为默认值。|129823|129824|现在isue已经修复了，打开Android+studio查看它。|129825|129826|这不会清除任何项目历史记录。|129827|entityMap|0|LINK|mutability|MUTABLE|url|ex.+C:\Users\Venky^0|0|0|0|0|0|B|D|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1A|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|1B|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1D|8|@]|9|@$K|1E|L|1F|1|1G]]|A|$]]|$1|M|3|N|5|6|7|1H|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|P|3|Q|5|E|7|1J|8|@]|9|@]|A|$]]|$1|R|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|S|3|T|5|6|7|1L|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1M|8|@]|9|@]|A|$]]|$1|V|3|W|5|E|7|1N|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1P|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]]]

Permanent Fix for Can't Edit Files in Android Studio On Windows. Performing the following steps:

<ol>
<li>Close Android studio.</li>
<li>Go to your User Folder - on Windows 7/8 this would be:</li>
</ol>

[SYSDRIVE]:\Users[your username] (ex. C:\Users\Venky)

In this folder there should be a folder called .AndroidStudioBeta or .AndroidStudio (notice the period at the start - so on some OSes it would be hidden).

<ol start="3">
<li>Delete this folder (or better yet, move it to a backup location - so you can return it if something goes wrong).</li>
</ol>

This should reset your Android Studio settings to default.

<ol start="4">
<li>Now the isue got fixed, check it by opening Android studio. </li>
</ol>

This will not clear any projects history.

blocks|key|131483|text|TL;DR:在终端中运行的OSX上修复它：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|131484|defaults+write+-g+ApplePressAndHoldEnabled+-bool+false+|code-block|syntax|javascript|131485|详细信息：我在Android+Studio的OSX和所有其他基于Intellij的应用程序(AppCode，WebStorm，IntelliJ+Idea等)上多年都有这个问题:一段时间后，编辑器失去焦点，并且在切换到另一个窗口或单击状态栏之前无法再进行编辑。通常这种情况每天都会发生几次，尽管我是IntelliJ堆栈的铁杆粉丝，但它还是非常烦人。这就是为什么我决定提供一个详细的解释如何摆脱这个问题，并希望我的修复可能会帮助一些人，因为我找不到一个明确的解决方案。|131486|正如我在网上发现的，潜在的解决方案是使用Oracle+JDK作为IDE引导JDK，但它在字体方面有问题，在我的情况下是不可接受的。|131487|通过使用https://intellij-support.jetbrains.com/hc/articles/206544879中的指令，我尝试使用最新的IntelliJ+JDK+(112+b801)解决这个问题，网址为：https://bintray.com/jetbrains/intellij-jdk/download_file?file_path=jbsdk8u112b801_osx_x64.tar.gz|131488|要设置它，只需使用帮助>查找操作...|131489|​|131490|📷|atomic|131491|131492|并选择从上面提到的位置下载的JDK|131493|131494|131495|131496|我感觉这个问题变得不那么频繁了，但它仍然每天至少发生一次。|131497|一段时间后，下面提到的链接启发了我尝试使用系统操作系统设置，该设置在按下并按住单个键后阻止键盘输入。非常感谢Jonathan+Ruckwood在这里的观察：|131498|https://youtrack.jetbrains.com/issue/IDEA-152818#comment=27-1434006|131499|默认情况下，OSX会在按住不放的情况下防止按键重复(详情请看这里：https://discussions.apple.com/thread/5038771?tstart=0)。你可以很容易地在任何文本编辑器中看到它(除了Emacs，终端，可能还有其他一些)，当按下任何字母键时，它不会产生几个字符，这与箭头键和其他一些可以重复的键相反。这种行为是可以改变的。我正在考虑系统和IntelliJ集成开发环境之间键盘阻塞时的一些潜在干扰，并尝试使用以下命令来防止按键重复阻塞(它可以随时更改回true+)：|131500|defaults+write+-g+ApplePressAndHoldEnabled+-bool+false+|131501|应用此命令后，应重新启动Android+Studio或其他IntelliJ+IDE。在此之前，我每天都会遇到几次这样的键盘阻塞错误，而现在，3天后，没有任何这种麻烦的迹象。祈祷吧..。无论如何，我认为现在比以前更好。我做的一个额外的配置更改是使用自定义boot+JDK+(它不能单独工作，但它可能与ApplePressAndHoldEnabled参数一起工作)。|131502|话虽如此，我认为这是一个bug，必须修复它才能在OSX上开箱即用，而不需要修改默认设置和引导JDK。请在这里投票支持修复：|131503|131504|entityMap|0|LINK|mutability|MUTABLE|url|https://intellij-support.jetbrains.com/hc/articles/206544879|1|https://bintray.com/jetbrains/intellij-jdk/download_file?file_path=jbsdk8u112b801_osx_x64.tar.gz|2|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/2d0441c97677564bfd5e9755cdf742b8.png|imageAlt|3|https://ask.qcloudimg.com/http-save/yehe-900000/dcd15955779f2b747446f4276a1d1cb1.png|4|5|https://discussions.apple.com/thread/5038771?tstart=0|6^0|0|6|0|0|0|5|0|0|4|1O|0|33|2O|1|0|0|0|0|1|2|0|0|0|0|0|1|3|0|0|0|N|Q|0|0|1V|4|0|X|1H|5|0|0|0|0|0|1V|6|0^^$0|@$1|2|3|4|5|6|7|24|8|@$9|25|A|26|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|27|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|28|8|@$9|29|A|2A|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|2B|8|@]|D|@]|E|$]]|$1|O|3|P|5|6|7|2C|8|@]|D|@$9|2D|A|2E|1|2F]|$9|2G|A|2H|1|2I]]|E|$]]|$1|Q|3|R|5|6|7|2J|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|2K|8|@]|D|@]|E|$]]|$1|U|3|V|5|W|7|2L|8|@]|D|@$9|2M|A|2N|1|2O]]|E|$]]|$1|X|3|T|5|6|7|2P|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|6|7|2Q|8|@]|D|@]|E|$]]|$1|10|3|T|5|6|7|2R|8|@]|D|@]|E|$]]|$1|11|3|V|5|W|7|2S|8|@]|D|@$9|2T|A|2U|1|2V]]|E|$]]|$1|12|3|T|5|6|7|2W|8|@]|D|@]|E|$]]|$1|13|3|14|5|6|7|2X|8|@]|D|@]|E|$]]|$1|15|3|16|5|6|7|2Y|8|@$9|2Z|A|30|B|C]]|D|@]|E|$]]|$1|17|3|18|5|6|7|31|8|@]|D|@$9|32|A|33|1|34]]|E|$]]|$1|19|3|1A|5|6|7|35|8|@]|D|@$9|36|A|37|1|38]]|E|$]]|$1|1B|3|1C|5|H|7|39|8|@]|D|@]|E|$I|J]]|$1|1D|3|1E|5|6|7|3A|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|6|7|3B|8|@]|D|@]|E|$]]|$1|1H|3|18|5|6|7|3C|8|@]|D|@$9|3D|A|3E|1|3F]]|E|$]]|$1|1I|3|-4|5|6|7|3G|8|@]|D|@]|E|$]]]|1J|$1K|$5|1L|1M|1N|E|$1O|1P]]|1Q|$5|1L|1M|1N|E|$1O|1R]]|1S|$5|1T|1M|1U|E|$1V|1W|1X|-4]]|1Y|$5|1T|1M|1U|E|$1V|1Z|1X|-4]]|20|$5|1L|1M|1N|E|$1O|18]]|21|$5|1L|1M|1N|E|$1O|22]]|23|$5|1L|1M|1N|E|$1O|18]]]]

TL;DR: to fix it on OSX run in the terminal:

<pre><code>defaults write -g ApplePressAndHoldEnabled -bool false 
</code></pre>

Details:
I had this issue for years on OSX in Android Studio and in all the other Intellij Based apps (AppCode, WebStorm, IntelliJ Idea, etc): after some time the editor loses focus and it's not possible to edit anymore until switch to another window or clicking on a status bar. Usually it happens couple of times per day and although I'm a big fan of IntelliJ stack it was very annoying. That's why I decided to provide a detailed explanation how to get rid of this problem and hope my fix might help someone since I can't find a definitive solution around.

As I found on the net potential solution is to use Oracle JDK as an IDE boot JDK but it has problems with fonts and not acceptable in my case.

Using instructions in <a href="https://intellij-support.jetbrains.com/hc/articles/206544879" rel="nofollow noreferrer">https://intellij-support.jetbrains.com/hc/articles/206544879</a> I've tried to work-around this problem with the latest IntelliJ JDK (112 b801) from: <a href="https://bintray.com/jetbrains/intellij-jdk/download_file?file_path=jbsdk8u112b801_osx_x64.tar.gz" rel="nofollow noreferrer">https://bintray.com/jetbrains/intellij-jdk/download_file?file_path=jbsdk8u112b801_osx_x64.tar.gz</a>

To set it up just use Help > Find Action...

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

and select the JDK downloaded from the above mentioned location

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

I had the feeling that issue became less frequent but it still took place at least once per day. 

After some time the link mentioned below inspired me to try to experiment with the system OSX setting which blocks keyboard input after press and hold a single key. Many thanks to Jonathan Ruckwood's observation here:

<a href="https://youtrack.jetbrains.com/issue/IDEA-152818#comment=27-1434006" rel="nofollow noreferrer">https://youtrack.jetbrains.com/issue/IDEA-152818#comment=27-1434006</a>

By default OSX prevents keys repeat after press and hold (see details here: <a href="https://discussions.apple.com/thread/5038771?tstart=0" rel="nofollow noreferrer">https://discussions.apple.com/thread/5038771?tstart=0</a>). You can easily see it in any text editor (except Emacs, terminal and maybe some others) when press any letter key it won't produce several characters in contrary to arrow keys and some other keys which can be repeated. This behaviour can be changed. I was thinking about some potential interference during keyboard blocking between the system and IntelliJ IDE and tried the following command to prevent key repeat block (it could be changed back to true at any time):

<pre><code>defaults write -g ApplePressAndHoldEnabled -bool false 
</code></pre>

After applying this command the Android Studio or other IntelliJ IDE should be restarted. Before I had such keyboard blocking errors several times per day and now after 3 days there is no any sign of this nuisance. Fingers crossed... In any case I think it's better now than before. One additional configuration change I did is using custom boot JDK (it did not work alone but maybe it works together with ApplePressAndHoldEnabled parameter).

Having that said I believe it's a bug and must be fixed to work on OSX out of the box without modifying default settings and boot JDKs. This way please vote for the fix here:

<a href="https://youtrack.jetbrains.com/issue/IDEA-152818#comment=27-1434006" rel="nofollow noreferrer">https://youtrack.jetbrains.com/issue/IDEA-152818#comment=27-1434006</a>

blocks|key|2904748|text|此问题可能与计算机的time有关。我面对这个问题，并意识到，当我修复我的计算机time并重新启动android+studio+(也是php+storm)时，它完全解决了问题。我的笔记本电脑仍然有一个时间问题(原因是CMOS电池)，有时我忘记改变我的电脑的time之前打开的Android+Studio，不能正确对焦任何地方。如果我修改了计算机的时间并重新启动了编辑器。它会修复的。据我所知，这个cant+focus问题有多种原因。我写这个答案是因为这些答案(在stackoverflow上)都不能解决我的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2904749|entityMap^0|A|4|13|4|1C|E|1U|9|3J|4|3S|E|5H|A|6E|D|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]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|G|$]]

This problem may be related with <code>time</code> of your computer. I faced this issue and realized that when i fix my computer <code>time</code> and restart <code>android studio</code> (also <code>php storm</code>) it fixes problem completely. Still my laptop has a time problem (cause of CMOS battery) and sometimes i forgot to change <code>time</code> of my computer before open the <code>Android Studio</code>, can not focus anywhere correctly. If i fix time of my computer and restart editors. it fixes. As i understand there are various causes of this <code>cant focus</code> problem. I write this answer because non of these answers (on <code>stackoverflow</code>) could solve my problem.

blocks|key|131516|text|我也遇到了这个问题，并试图删除配置文件并重新安装Android+Studio，但问题仍然存在。然后我发现，如果我取消选中工具下的"vim模拟器“，问题就会消失！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|131517|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|$]]

I was also having this problem and had tried to delete the configuration files and reinstall the Android Studio, but the problems were still there.
Then I found out that if I uncheck the "vim emulator" under tool, the problem goes away!

blocks|key|128824|text|您的文件系统可能处于只读状态|type|unstyled|depth|inlineStyleRanges|entityRanges|data|128825|将项目移动到另一个文件夹或驱动器|128826|​|128827|📷|atomic|offset|length|128828|128829|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7025bcc041fc36985573440cb3d3a1a8.jpeg|imageAlt^0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@$I|Y|J|Z|1|10]]|A|$]]|$1|K|3|E|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

your file system maybe in read only

move your project to another folder or drive

<a href="https://i.stack.imgur.com/Kn8UU.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Kn8UU.jpg" alt="enter image description here"></a>

blocks|key|2904895|text|我在项目中也遇到了同样的问题。我更改了计算机的时间，这导致了这个错误。因此，在无效缓存并重启studio之后，它工作得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2904896|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|$]]

i was facing same problem in project. i was change the time of my computer which cause this error. so after invalidate caches and restart studio , it works fine.

blocks|key|2904921|text|我也遇到过同样的问题，并尝试了上面的一些解决方案。这些对我都不起作用。在File+->+Invalidate+Caches/Restart之后，这个问题就解决了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2904922|entityMap^0|10|4|18|P|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|$]]

I have faced same problem and tried some of the solutions above. None of worked for me. After <code>File</code> -> <code>Invalidate Caches/Restart</code> the problem have been solved.

blocks|key|2904959|text|在通过USB+DisplayLink使用外部显示器一段时间后，我发现了这个问题。断开USB连接并重新连接后，一切都恢复正常，但问题可能在几天后仍然出现，这只是一个临时修复。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2904960|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|$]]

I had this issue appear after using external displays via USB DisplayLink for some time. After disconnecting USB and reconnecting everything returns to normal but the issue may still appear after a few days, this is just a temporary fix.

blocks|key|128940|text|tl;dr，使用cmd+%2B+shift+%2Bf打开搜索，然后再次关闭。一切都应该很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|128941|128942|我还有一个问题，那就是我突然失去了在mac上输入编辑器的能力。从来没有任何押韵或理由。我尝试了这里的建议，遗憾的是它们不起作用。|128943|对我有用的是用cmd+%2B+shift+%2Bf打开搜索框(在mac上)。一旦它打开并关闭，我就可以再次输入。我还注意到我一直在尝试输入的东西都在搜索栏中。|128944|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|J|8|@]|9|@]|A|$]]|$1|C|3|D|5|6|7|K|8|@]|9|@]|A|$]]|$1|E|3|F|5|6|7|L|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|M|8|@]|9|@]|A|$]]]|H|$]]

tl;dr, open the search with cmd + shift + f and close it again. All should be good.

<hr>

I was also having the problem of suddenly losing the ability to type in the editor on my mac. There was never any rhyme or reason. I tried the suggestions here and sadly they didn't work. 

What worked for me is opening the search box with cmd + shift + f (on mac). Once that opened and I closed it, I could type again. I also noticed the things I had been trying to type were in the search bar.

blocks|key|132159|text|在上面单击滚动条的情况下，解决方法不起作用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|132160|使用鼠标(而不是键盘快捷键)通过右键菜单执行复制/解析，编辑将返回。|132161|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 case above clicking scroll bar workaround doesn't work:

Use mouse(not keyboard shortcut) to do a copy/parse via right-click menu, the edit will be back.

blocks|key|2693021|text|唯一对我有效的解决方案是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2693022|2693023|关闭安卓工作室。|ordered-list-item|2693024|保存.idea文件夹以备将来恢复(如果有什么东西，请关闭.idea文件夹(或仅重命名)。|2693025|启动安卓工作室并打开项目。|2693026|2693027|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|N|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|P|8|@]|9|@]|A|$]]|$1|H|3|I|5|E|7|Q|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|L|$]]

The only solution that worked with me:

<ol>
<li>Close Android Studio.</li>
<li>Save .idea folder for future restore (if something happened).</li>
<li>Remove .idea folder (or just rename it).</li>
<li>Start Android Studio and open project.</li>
</ol>

blocks|key|129988|text|1-关闭Android+Studio。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129989|2-从项目中删除.idea文件夹|129990|3-启动Android+Studio并打开项目。|129991|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|$]]

1- Close Android Studio.
2 - Remove .idea folder from your project
3 - Start Android Studio and open project.

blocks|key|2905104|text|卸载IdeaVIM解决了我的问题。安卓studio>偏好设置>插件>+IdeaVim+(卸载)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2905105|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|$]]

uninstall IdeaVIM solved my problem.
Android studio&gt; Preferences &gt; Plugins &gt; IdeaVim (uninstall)

blocks|key|2905127|text|简单明了，禁用Vim插件。在Windows上，只需转到设置/插件，然后找到vim，然后禁用并重新启动您的IDE。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2905128|在mac上也可以这样做，但先打开Preferences，然后选择plugins。|2905129|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|$]]

short and clear, disable Vim plugin. On Windows, just go to settings / plugins then find vim and disable and restart your IDE.
On mac do the same, but start on Preferences then choose plugins.

blocks|key|129040|text|是的，谢谢，这绝对是VIM+Emulator。从工具菜单中将其禁用，您将不会再失去该功能|type|unstyled|depth|inlineStyleRanges|entityRanges|data|129041|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|$]]

Yes Thanks it is definitely the VIM Emulator. Disable it from the tool menu and you will not loose the ability anymore

blocks|key|130083|text|这是因为我的案例中的ideaVim。您可以通过单击键盘上的"i“来切换此模式(不可编辑)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|130084|要获取有关ideaVim的更多信息，请访问：https://www.jetbrains.com/help/pycharm/using-product-as-the-vim-editor.html#vimrc|offset|length|130085|entityMap|0|LINK|mutability|MUTABLE|url|https://www.jetbrains.com/help/pycharm/using-product-as-the-vim-editor.html#vimrc^0|0|M|29|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

This's because of ideaVim for my case. And you can switch from this mode (uneditable) by clicking &quot;i&quot; on your keyboard.
To get more information about ideaVim : <a href="https://www.jetbrains.com/help/pycharm/using-product-as-the-vim-editor.html#vimrc" rel="nofollow noreferrer">https://www.jetbrains.com/help/pycharm/using-product-as-the-vim-editor.html#vimrc</a>

blocks|key|131714|text|在阅读了上面的所有建议并尝试了不同的方法后，其中大多数对我来说都不起作用。我逐渐意识到，我所需要做的就是按下键盘上的"i“键，它就变得正常了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|131715|我使用的是Windows，在MacBook上可能会有所不同，但这对我来说是有效的。|131716|我祝你一切顺利。|131717|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|$]]

After going through all the above recommendations and trying different things, most of which didn't work for me. I came to realize that all I needed to do was press the key &quot;i&quot; on my keyboard and it became normal.
I am using a MacBook Pro, it might be different on Windows, but that was what worked for me.
I wish you all the best.

blocks|key|130093|text|我遇到了类似的问题，点击右下角一个绿色的V，一个小屏幕出现，说IdeaVim已启用，取消勾选这个，嘿，马上！打字已恢复正常。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|130094|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|$]]

I had a similar problem and clicked in the bottom right corner on a V which is coloured green, a small screen comes up to say IdeaVim is enabled, untick this and hey presto! typing is back to normal.

blocks|key|2693262|text|只需关闭/禁用"IdeaVim“扩展即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2693263|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|$]]

Just Turn off/Disable the &quot;IdeaVim&quot; extension.

For some unknown reason, I can't edit files in Android Studio. This includes both Java and XML files.
When I launch Android Studio (v1.2.2), everything is fine. However, after some time, I lose the ability to edit files content. Here is what I noticed:
<ul>
<li>When I click on any line in the source code, the lines get highlighted but the caret indicator is not showing.</li>
<li>When I start typing, a <code>search for:</code> box starts appearing on the top of the left panel (Project window), and it starts filtering the project files according to what I type!</li>
<li>Files are not locked as Read-Only. I checked.</li>
<li>Restarting Android Studio did not resolve it permanently. Everything seems fine for some time, then the problem appears again.</li>
<li>I did check my keyboard to see if I have a stucked keystroke that might cause this problem. Didn't notice anything.</li>
<li>In the Project window, I noticed that <code>MainActivity</code> file name is in grey (See the screenshot below). I'm not sure if this is because of something I did, or if it is how Android Studio identifies the main Activity in the project.</li>
</ul>
<a href="https://i.stack.imgur.com/UoVYv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UoVYv.png" alt="Project View Screenshot" /></a>

Can't Edit Files in Android Studio

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由于一些未知的原因，我不能在Android Studio中编辑文件。这包括Java和XML文件。当我启动Android Studio (v1.2.2)时，一切都很好。但是，过了一段时间后，我就失去了编辑文件内容的能力。这是我注意到的：当我单击源代码中的任何行时，这些行都会突出显示，但不显示插入符号指示符。当我开始键入时...

问无法在Android Studio中编辑文件
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