failed to find style 'cardView Style' in current theme

Question

After updating support library version 27.1.0 Android Studio unable to render CardView. It shows error message as

failed to fi         


        

Answer 1

updating the CardView from 27.1.1 to 28.0.0-alpha3 fixed the XML preview for me on AS 3.1.3.

implementation "com.android.support:cardview-v7:28.0.0-alpha3"

it still complains, but it renders the preview.

there's also a new androidx class now, which should be the same:

implementation "androidx.cardview:cardview:1.0.0"

when updating com.android.support:design to 28.0.0-alpha3, it hints for:

The resource @style/CardView is marked as private in com.android.support:design

downgrading back to API 27 with buildTools 27.0.3 & supportLibrary 27.1.1 also prevents the issues. might upgrade to 28.0.0 with Android Studio 3.2 then.