Android studio 3.1 XML preview not showing for some XML layouts

Question

Some layouts are shown, some just have blank, gray frame. I can\'t seem to find a correlation between XML layouts that work and those that do not, there is a mixture of use

Answer 1

All you had to do is go to styles.xml file and replace your parent theme from Theme.AppCompat.Light.DarkActionBar to Base.Theme.AppCompat.Light.DarkActionBar

Append Base to the default parent style