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, orientat

Answer 1

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\\.gradle\caches\
c:\Users\\.AndroidStudio3.2\system\caches\