title: Set drawable for DividerItemDecoration
body: <p>I'm trying to set my custom drawable (line) for DividerItemDecoration, but with no success. Where is the mistake?</p>
  
  <pre><code>DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(getContext(),
                  LinearLayoutManager.VERTICAL);
  dividerItemDecoration.setDrawable(getContext().getResources().getDrawable(R.drawable.sk_line_divider));
  </code></pre>
  
  <p>XML shape:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;shape xmlns:android="http://schemas.android.com/apk/res/android"
      android:shape="line"&gt;
      &lt;stroke
          android:width="1dp"
          android:color="#000000"&gt;
      &lt;/stroke&gt;
  &lt;/shape&gt;
  </code></pre>