title: Edittext outline box not visible
body: <p>I have 2 EditText's in a layout. For some reason, the border outline that shows in the preview here(<a href="http://gyazo.com/7cb0d1d2c5807e65f65164957b4d13b8" rel="nofollow">http://gyazo.com/7cb0d1d2c5807e65f65164957b4d13b8</a>) doesn't show when I run the app on my phone or on the emulator(<a href="http://gyazo.com/428bb31a974e43ccb52aaaee61f3b355" rel="nofollow">http://gyazo.com/428bb31a974e43ccb52aaaee61f3b355</a>). I would like to see that box that outlines the Edittext's in the preview screen. </p>
  
  <p>If anyone could try and see what the issue is, that would be great, thanks.</p>
  
  <p>XML containing the 2 Edittext's:</p>
  
  <pre><code>&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@drawable/background_medium"
  android:paddingBottom="@dimen/activity_vertical_margin"
  android:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  tools:context=".List" &gt;
  
  &lt;LinearLayout
      android:id="@+id/Text1andText2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content" &gt;
  
      &lt;EditText
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:layout_marginTop="110dp"
          android:layout_weight="50"
          android:ems="10"
          android:hint="@string/Text2" /&gt;
  
      &lt;EditText
          android:layout_width="fill_parent"
          android:layout_height="wrap_content"
          android:layout_marginTop="110dp"
          android:layout_weight="50"
          android:ems="10"
          android:hint="@string/Text2" /&gt;
  &lt;/LinearLayout&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>