Android Studio - Auto complete and other features not working

Question

I installed android studio.. it was working fine. Now all the sudden, none of the auto complete features are working.. I can type anything anywhere no variable checking, no help with functions or checking anything. I can still compile the project and I get errors when that happens.

Can anyone please help me out with this issue.

Does this answer your question? [Android Studio marks R in red with error message "cannot resolve symbol R", but build succeeds](https://stackoverflow.com/questions/17421104/android-studio-marks-r-in-red-with-error-message-cannot-resolve-symbol-r-but) — Top-Master, May 31 '22 at 02:12

score 246 · Answer 1 · edited May 31 '22 at 04:01

246

#1 From Build menu (of your Android Studio), click Rebuild Project option.

#2 Then once rebuild completes, go to File > Invalidate Caches / Restart... and Click on Invalidate an Restart button.

This really works for me.

Source: https://code.google.com/p/android/issues/detail?id=61844#c4

#1 Rebuild is required, because Android-Studio does simply rely solely on Gradle's build-result (without static-analysis support, at least at time of writing, 2022).

#2 Clearing cache is required, because the previous build-result (before above rebuild) may be indexed, which makes Android Studio ignore latest Gradle build-result
(this is a very good speed optimization, but a very bad Developer-experience as well).

There can sometimes be other reasons too, which is why there are many other answers posted here.

edited May 31 '22 at 04:01

Top-Master

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answered May 20 '14 at 13:55

Renan Franca

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This works. You have to wait for the "indexing" process to finish. By the way, what's up with SO's answer sorting? This is clearly the best answer but it is below several bad copies of the power save mode answer (which doesn't work). – Timmmm Dec 03 '15 at 21:17
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no longer working - A.S. 3.1.3 has suddenly stopped giving suggestions when editing XML ! – Someone Somewhere Jun 20 '18 at 14:39
If this does not work for you, try manually deleting the caches: see [this answer](https://stackoverflow.com/a/53388983/1689222). This helped in my case. – Pecan Jan 08 '20 at 10:06
Can confirm. This solution worked on Android Studio 4.1.3 – Ramakrishna Joshi Apr 09 '21 at 09:17
Yes, it will work after restart only for a short time. and again It will be gone. I have to restart every 15min to work with suggestions. – ÄR Âmmãř Żąîñh Jun 02 '21 at 01:42
Can confirm it also helps if you have automaticly hiding suggessions issue. – Egor Jul 26 '21 at 14:10

score 111 · Answer 2 · answered Oct 21 '13 at 22:19

111

You can also check if Power Save Mode on File menu is disabled.

answered Oct 21 '13 at 22:19

user2904931

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For me disabling power-save mode did the trick ! Thanks. For others Power Save Mode mode can be disabled from File->Power Save Mode – Bunny Rabbit Sep 21 '14 at 16:53
After much googling, this finally worked for me, but I had to exit and restart Android Studio before it started working. Thanks for sharing. – RickC Jun 04 '18 at 03:56
I could disable Power Save only after unplugging and plugging in again my laptop – tudor Sep 29 '19 at 15:53

Sagar Makhija · Answer 3 · 2021-01-14T10:53:40.877

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Close Android Studio Go to C:\Users\UserName.android and rename the folder:

build-cache to build-cache_old

Go to C:\Users\UserName.AndroidStudio3.x\system OR (Android studio 4 and Higher) Go to C:\Users\UserName\AppData\Local\Google\AndroidStudio4.x and rename these folders:

caches to caches_old
compiler to compiler_old
compile-server to compile-server_old
conversion to conversion_old
external_build_system to external_build_system_old
frameworks to frameworks_old
gradle to gradle_old
resource_folder_cache to resource_folder_cache_old

Open the Android Studio and open your project again.

edited Jan 14 '21 at 10:53

answered Nov 20 '18 at 08:32

Sagar Makhija

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Works like a charm! "Invalidate and Restart" didn't work for me. By the way, for newer versions of Android Studio, the AndroidStudio folder is located at C:\Users\UserName\AppData\Local\Google\AndroidStudio4.1 – Tianyao Chen Jan 14 '21 at 10:08
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Thank you man, it's really work! Invalidate + restart was not enough, and I spend ~2 hour for find a solution. After renaming/removing this folders and opening project IDE starts indexing and everything become workable! – SerjantArbuz Jun 10 '21 at 12:20
this is the only working solution on SO for this problem. – Sadda Hussain Sep 01 '21 at 10:20
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I closed Studio and deleted all folders named AndroidStudio in C:\Users\UserName\AppData\Local\Google\ fixed the issue. Thanks – Unaisul Hadi Sep 11 '21 at 05:39

score 33 · Answer 4 · edited Nov 27 '20 at 09:05

33

Close Android Studio
Go to c_users_path_on_windows/.AndroidStudio3.5/system/
Delete the cache folder
Start Android Studio

This works for me.

edited Nov 27 '20 at 09:05

zackygaurav

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answered Dec 26 '19 at 10:04

mili2501

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Thanks. It helped me. – sophin Apr 28 '20 at 12:58
Thank you brother!!! After so many solutions this finally worked. – Ankit Gupta Jun 27 '20 at 11:15
Save my time Thanks Stuck with 2 Hrs again and Restarting Android Studio Finally its fixed – Sanjeev Kumar Jul 03 '20 at 21:01
I'm actually adding a cron job to delete this folder every morning - thanks. I also disabled some inspections that didn't make sense for my project – bsautner Sep 09 '20 at 13:43

score 17 · Answer 5 · edited Aug 09 '17 at 15:12

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Most of the times i have seen that the problem is that Power Save Mode is enabled, to disable go to Current inspection profile (lower right corner in Android Studio).

edited Aug 09 '17 at 15:12

bagage

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answered Oct 20 '15 at 15:52

Jorgesys

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score 14 · Answer 6 · answered Aug 23 '13 at 07:58

I have not run into this problem personally, but try checking the following settings (File -> Settings or Alt+F7):

Project Settings [name]
Inspections - ensure that Android and Android Lint is checked, or alternately just set it back to default using the dropdown box at the top.

IDE Settings
Editor -> Code Completion - ensure the Autopopup code completion is checked (and check the rest of the settings based on your preference.

score 11 · Answer 7 · answered Apr 08 '20 at 09:12

11

Uncheck "Power Save Mode" in "File" tab

answered Apr 08 '20 at 09:12

Muhammad Ali

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Hasaan Ali · Answer 8 · 2014-11-03T13:19:12.860

Solution: Try disabling "File -> Power Save Mode" in Android Studio (Beta) 0.8.14 - Mac OS X

On windows, the option can be at some other place.

I had the same problem then I recalled that while exploring the new android studio, I switched on the "File -> Power Save Mode" to see what it does?

I disabled the power save mode and all those intelligent features were back.

It turned out that in Power Save Mode, Android Studio switches off the modules responsible for features like Smart Code Completion and Code Analysis.

Ben987654 · Answer 9 · 2018-04-29T19:28:10.887

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I had a similar problem where none of the other solutions worked.

Closing Android Studio and then deleting the .idea and build folders resolved the issue.

edited Apr 29 '18 at 19:28

answered Apr 29 '18 at 19:22

Ben987654

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score 7 · Answer 10 · answered Aug 09 '18 at 10:10

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If nothing works (like happened with me ) go to your user profile in windows at %userprofile% . You will find folders there (hidden) named with the version of the android studio you are using and prefixed with a dot.

like .AndroidStudio3.1. Just delete that .

answered Aug 09 '18 at 10:10

Muhammad Ahmed AbuTalib

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This will delete all the configurations that you have setup for android studio – Mirwise Khan Mar 22 '20 at 09:42

score 6 · Answer 11 · answered Oct 21 '18 at 04:29

6

Disable Power Save Mode and Invalidate Cache and Restart.

answered Oct 21 '18 at 04:29

Md Nakibul Hassan

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score 6 · Answer 12 · answered Sep 22 '21 at 06:20

For Artic Fox 2020|3.1 Version: Auto Complete Suggestion Problem.

Please Follow the Following Steps:

Close Android Studio

Locate caches folder in C:\Users{username}\AppData\Local\Google\AndroidStudio2020.3 and Delete it. Open Android Studio Again.

Check your Android studio version and Target that version folder at below location C:\Users{username}\AppData\Local\Google

Note : AppData folder is Hidden in Windows

This Solution also works if android studio mess up with xml files and java code. Don't! modify your code otherwise IDE won't able to change it to default. If you see such messy code just follow above steps and your code will be fine again.

score 5 · Answer 13 · answered Jun 04 '16 at 17:39

5

It's Working

Disable Power Save Mode

Untick Power Save Mode Option :: File -> Power Save Mode

answered Jun 04 '16 at 17:39

Nidheesh G

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score 4 · Answer 14 · edited Apr 20 '15 at 09:44

Just remove all the folders named AndroidStudioPreview

On Windows:

Go to your User Folder - on Windows 7/8 this would be:

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

In this folder there should be a folder called .AndroidStudioPreview

On Mac OS X

Remove these files:

~/Library/Application Support/AndroidStudioPreview ~/Library/Caches/AndroidStudioPreview ~/Library/Logs/AndroidStudioPreview ~/Library/Preferences/AndroidStudioPreview

score 4 · Answer 15 · answered Feb 13 '15 at 04:39

There is a power saver mode in android studio if accidentally you click on that it will disable code analysis which will reduce the battery consumption and performance will also increase but it will not detect any errors and do auto complete operations.

To disable power saver mode

- Go to File Menu of Studio
- Uncheck The Power Saver Mode

In your IDE code analysis will be shown using an eye symbol at the right corner of your android studio.

If Green means it is enabled and there is no error in your code.
If Red Means It is enabled but there are few errors in your code.
If It is white or blur then code analysis is disabled

Green check means there are no errors. Yellow square means there are warnings. Red square means there are errors. White eye means it's in progress. White pause icon means it's waiting on an autocomplete window to close. There's another white icon that means it's in power save mode and is disabled. — Anubian Noob, Jul 11 '15 at 23:50

score 3 · Answer 16 · answered Mar 19 '21 at 03:18

Be sure to check for IDE errors by clicking the button at the bottom right of android studio.

In my case, there was a bad plugin, and the IDE Fatal Errors window prompted me to uninstall the plugin. (I wish I'd known about this feature before spending half a day invalidating caches, deleting folders, and reinstalling android studio with no luck.)

score 2 · Answer 17 · answered May 27 '16 at 01:35

2

In my case, when I switch keyboard language to English, the auto complete works again.

answered May 27 '16 at 01:35

Hai nguyen thanh

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score 1 · Answer 18 · answered Jun 19 '16 at 08:58

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i have this problem many times until now ,i suggest thees approach :

1-as said check power saveing mode

2-create new project with same application id and package name and copy all source and resource from older project to new one,

answered Jun 19 '16 at 08:58

FxRi4

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Recreating a project in this manner is kind of a "WebMD" approach... it's cancer, – mwieczorek Jun 24 '16 at 23:55

score 1 · Answer 19 · answered Nov 20 '17 at 15:51

1

If you have a library project included, make sure the library has the dependencies in build.gradle listed using the api configuration, not the implementation configuration. Also make sure that the project that includes the library has all the dependencies listed (using the implementation configuration is fine here).

answered Nov 20 '17 at 15:51

beetstra

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It still doesn't work. I included a custom view in xml file. The attributes(custom or default), doesn't auto complete. Even dimens or string file referencing also doesn't work for only that view. – Paramveer Singh Nov 20 '18 at 06:45

Androidcoder · Answer 20 · 2017-12-10T18:17:17.110

'The file size (2561270 bytes) exceeds configured limit (2560000 bytes). Code insight features are not available.'

Had this issue for days with none of these proposed solutions working before eventually getting this message in yellow under the tabs after adding a line of code. Removing the line of code eliminated the message but not the issue. There appears to be a code size window where you lose insight features but don't get this message, at least for me. Once you go over a certain point the message finally pops up. The suggested solution in a different thread for this issue was to edit 'Help/Edit Custom Properties' to increase the configured limit, but just opening this brought up a dialogue asking if I wanted to create an 'idea.properties' folder so I decided not to risk that approach over eventually cutting the file size.

score 1 · Answer 21 · edited Oct 03 '19 at 16:30

There can be several things which cause this.

Make sure you've write the correct version in targetSdkVersion and compileSdkVersion.
Make sure targetSdkVersion and compileSdkVersion are same.

Android Studio - Auto complete and other features not working

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