title: Activity background becoming black!
body: <p>i have set the background of an activity with a green gradient png image as</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:background="@drawable/bg"
      android:orientation="vertical"&gt;
  ...
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>This working fine almost always but some times during navigating to an activity its background is becoming black! i am not able to reproduce it with any specific operation, also not getting how to debug or fix it.</p>