Rendering problems with IO source code

I recently uploaded the source for an IO scheduling app released by google, but I'm having problems using it in Android Studio. Whenever I try to view the layout, I get the error

Rendering Problems
Missing styles. Is the correct theme chosen for this layout?

      

        
        
        
      

    

and

Couldn't find theme resource ?android:attr/paddingLeft for the current theme

      

        
        
        
      

    

Any ideas what might be wrong in my assembly to trigger this? Also note that the source builds fine. There are two warnings regarding httpclient: 4.0.1, but otherwise the build will succeed.