title: Android Studio is reading the - sign in my API key as an operation
body: <p>In my app's gradle I defined my API_KEY as followed (changed it for the purpose of asking this question)</p>
  
  <pre><code>buildTypes.each {it.buildConfigField 'String', 'API_KEY', "AIuvSyTp2TG-P81edjKBRSGWoH8slLeurbg2HOc"}
  </code></pre>
  
  <p>But when I run the app, it's throwing me this error</p>
  
  <pre><code>com/projecttest/cloudvision/MainActivity.java   
  error: cannot find symbol variable AIuvSyTp2TG  
  error: cannot find symbol variable P81edjKBRSGWoH8slLeurbg2HOc
  </code></pre>
  
  <p>Apparently it's treating the - sign in my API key as some kind of operation? How do I fix this?</p>