title: LinearLayout dividers are not showing
body: <p>I am working on an android project and I have a LinearLayout which contains 2 horizontal buttons using borderless button style. </p>
  
  <p>I am trying to show dividers in between each button but they are not showing up but I can't see any reason why not. Below is the XML layout:</p>
  
  <pre><code>&lt;LinearLayout android:id="@+id/call_log_select_host_button_group"
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:orientation="horizontal"
          android:layout_alignParentBottom="true"
          android:divider="#ffffff"
          android:showDividers="middle"
          android:dividerPadding="22dp"&gt;
          &lt;Button android:id="@+id/call_log_select_btnCancel"
              android:layout_width="0dp"
              android:layout_height="wrap_content"
              android:layout_weight="1"
              android:text="Cancel"
              style="?android:attr/borderlessButtonStyle" /&gt;
          &lt;Button android:id="@+id/call_log_select_btnBlock"
              android:layout_width="0dp"
              android:layout_height="wrap_content"
              android:layout_weight="1"
              android:text="Block"
              style="?android:attr/borderlessButtonStyle" /&gt;
      &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Thanks for any help you can provide. </p>