title: Is it possible to set drawableLeft programmatically?
body: <p>In XML we can set drawableLeft using this way:</p>
  
  <pre><code>    &lt;Button
      android:id="@+id/previewBtn"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:background="@drawable/white_btn"
      android:drawableLeft="@drawable/green_circle"
      android:drawablePadding="16dp"
      android:text="Button" /&gt;
  </code></pre>
  
  <p>How to do same thing programmatically?</p>