Android Studio cannot preview?

You are starting a new Android project, you open your Android Studio, Gradle is building…exciting!

You open your main activity .xml file, put a new button and….nothing happens. Android Studio won’t preview the layout of your application…damn…

Solution: for most of the tamplates that you can choose from the wizard, the fix is very simple. Go to app > res > values > styles.xml and find the row

and change (prepend “Base.” into the first line) to

and it works like a charm!