Exclude files from Android Studio lint spell checker

This can be done by using IDE scopes. In Android Studio (at least 3.4) you can configure each inspection per scope. The idea is that you create a scope that contains all files you don't want to be spellchecked, and then switch Spelling inspection off for this scope, but keep it on for everything else.

1. Add a new scope in Settings / Appearance & Behavior / Scopes that contains all files which you want to exclude from spell checking. For example, this pattern covers all svg files: file:*.svg. In your case it could be like file:*/colors.xml||file:*/cache.xml. IDE will highlight all affected files by green, so you can check if you entered correct pattern.

2. Then set up Spelling inspection, so that it is OFF for your new scope and ON everywhere else.