title: No resource identifier found for attribute '...' in package 'com.app....'
body: <p>I've imported a project from Eclipse to Android studio. It utilizes a custom view:</p>
  <pre><code>xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;
  </code></pre>
  <p>I get errors in the lines below from <code>activity_ro.xml</code> file like:</p>
  <blockquote>
  <p>&quot;Error:(136) No resource identifier found for attribute
  'pstsTabPaddingLeftRight' in package 'com.app.xxxx'&quot;</p>
  </blockquote>
  <pre><code>app:pstsDividerColor=&quot;#00000000&quot;
  app:pstsIndicatorColor=&quot;#FF33B5E6&quot;
  app:pstsTabPaddingLeftRight=&quot;14dip&quot;
  app:pstsUnderlineColor=&quot;#FF33B5E6&quot; /&gt;
  </code></pre>
  <p>I'm not sure if custom views are different for gradle or maybe I'm doing something wrong. Anyone have an idea?</p>