Unable to use columnCount attribute in android.support.v7.widget.GridLayout

Question

I am trying to use columnCount attribute in android.support.v7.widget.GridLayout but getting error that

Error:(2) No resource identifier found for attribute 'useDefaultMargins' in package

I have used xmlns:app="http://schemas.android.com/apk/res-auto

Answer 1

Try changing :

xmlns:app="http://schemas.android.com/apk/res-auto" 

to

xmlns:app="http://schemas.android.com/apk/lib/com.package.class"

Update your library to

compile 'com.android.support:gridlayout-v7:23.2.0'

check this answer.