Unknown attribute android

Question

Getting Unknown attribute error on all android tag.

In layout XML, Auto suggestion is not showing all attributes (like layout_width, layout_height, orientation, orientation & all others android attributes.)

Things i have done to resolve this issue.

Clean Build & Rebuild Deleted .idea file Invalidated Caches/ Restart.. option Turn On Power Save Mode. SDk is up to date.

Unknown attribute android:orientation less. (Ctrl+F1) This inspection highlights unknown XML attributes in Android resource files and AndroidManifest.xml

currently using :

 Android studio 3.2.1
 targetSdkVersion 27
 ext.kotlin_version = '1.2.61'
 build:gradle:3.2.1

I tried with deleting .idea in the path and invalidate cache and restart ,synching the gradle

Have you check if you have a correct `AndroidManifest.xml` xml structure? — ישו אוהב אותך, Oct 17 '18 at 12:23
Try moving your project to a path which doesn't have a space (` `) in it. — ישו אוהב אותך, Oct 19 '18 at 06:44
i got a solution by uninstalling adroid studio and changing the sdk path — Santhosh, Oct 23 '18 at 12:08
Can you post the build output where the error is displayed? Your screenshot is not of great use without that — Kathir, Nov 30 '18 at 13:11
while building it will not show anything,after that in XML Getting Unknown attribute error on all android tag. — Santhosh, Dec 03 '18 at 05:19
Possible duplicate of [Unknown attribute android:layout\_width, layout\_height, id, gravity, layout\_gravity, padding](https://stackoverflow.com/questions/35308735/unknown-attribute-androidlayout-width-layout-height-id-gravity-layout-gravi) — Allan Veloso, Mar 22 '19 at 17:49

score 43 · Answer 1 · answered Oct 29 '18 at 20:36

43

got the same issue recently with Windows7 and Android studio 3.2.1. what's actually helped is clean up of the following folders:

c:\Users\<user>\.gradle\caches\
c:\Users\<user>\.AndroidStudio3.2\system\caches\

answered Oct 29 '18 at 20:36

alexuz

778
6
6

it was solution in my case, before this I tried all possible ways but nothing helped – Saba-21 Nov 01 '18 at 06:43
and one more thing,delete the wrapper gradle-version-all and again rebuild the application.. – Santhosh Nov 02 '18 at 06:31
It works. In the end, I just need to sync gradle with project and click the hammer button. – Anggrayudi H Nov 05 '18 at 17:16
This is the only solution that's worked for me. Thank you! – Mark Whitaker Nov 12 '18 at 17:22
Yes, this should be marked as **right & accepted answer** among all others answers for this issue on **S.O**. – Jeel Vankhede Dec 18 '18 at 06:37
Where can we find the folders in Linux distribution? – kamdaou Sep 05 '22 at 10:10

score 1 · Answer 2 · answered Jul 14 '20 at 05:43

100% Working

These two steps will solve.

Do this two steps: 1.Go to folder where you android studio caches are located. I have android studio 3.6.3 For me it's "C:\Users\Lenovo.AndroidStudio3.6\system\caches" 2.Go to the folder where you android studio projects are located. Open the project >then .idea folder and delete the caches. For me its "C:\Users\Lenovo\AndroidStudioProjects\MyDictionary.idea\caches"

Unknown attribute android

2 Answers2

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