无法查看android studio上的设计预览中有什么？

Question

This is how Android Studio looks for me:

When I pick a number text and put it on a blue screen, I cannot see it to edit it. Why is that?

Answer 1

At the very top where it says Pixel XL (to the left of it). To the right of the refresh icon.

You have 3 different boxes. The box in the middle is all blue, see it? great. Click on the box on the left that has zero blue. What do you get now?