问题
This is a new one for me. In Design view I am unable to see the first 150 pixels of the design view window-- including the buttons/options to the left of the AppTheme button. I've tried the Pan and Zoom tool, which seems to do nothing. It shows the full view and blueprint view filling the Pan and Zoom tool interface. Any idea how to fix this:
回答1:
"Window" -> "Restore Default Layout" worked for me.
回答2:
I had the same problem. Just drag the mouse where your projects are to the far left of the screen and slowly move with your mouse over to the right until you will see somewhere in the middle resize pointer- thats your design view border. Click it and move to the right and it should appear! If you want i can try to make a gif how to do it if the above does not help.
来源：https://stackoverflow.com/questions/42638033/android-studio-part-of-design-view-hidden