title: Transparent TextView background in FrameLayout
body: <p>I placed a TextView on an ImageView in a FrameLayout.  I've tried various combinations of android:background for the TextView but always get a see-through grey background on it.  I'd like a transparent background.  The android:background attribute seems to be ignored.</p>
  
  <pre><code>&lt;HorizontalScrollView
      android:id="@+id/categories_horizontal_scrollview"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:paddingBottom="25dip"&gt;
      &lt;LinearLayout
          android:id="@+id/categories_linear_layout"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"&gt;
          &lt;FrameLayout
              android:layout_width="wrap_content" 
              android:layout_height="wrap_content"&gt;
          &lt;ImageView  
              android:layout_width="fill_parent" 
              android:layout_height="fill_parent" 
              android:id="@+id/photos_imageview"
              android:scaleType="center"
              android:src="@drawable/photos_ipad" /&gt;
          &lt;TextView
              android:layout_width="wrap_content" 
              android:layout_height="wrap_content" 
              android:id="@+id/photos_text"
              android:layout_marginBottom="10dip"
              android:layout_gravity="center_horizontal|bottom"
              android:padding="3dip" 
              android:background="#00000000"
              android:textColor="#ffffffff"
              android:textSize="20dip" 
              /&gt;
          &lt;/FrameLayout&gt;
                .
                .
  </code></pre>