FrameLayout z-order not behaving as expected on Gingerbread?

问题

I have a layout as follows:

<FrameLayout
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@android:color/black" >

<View
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:background="@android:color/white" >

<LinearLayout
  android:layout_width="match_parent"
  android:layout_height="match_parent" >
  <!-- children -->
</LinearLayout>

</FrameLayout>

The LinearLayout has no background and neither do any of its children. I can see the white View beneath the LinearLayout on Ice Cream Sandwich devices but not on Gingerbread devices. Anyone know why this might be and what I can do about it??

Note: I'm not setting the background of the LinearLayout to be white as what I really need to do is perform some animations on the View object.

来源：https://stackoverflow.com/questions/17590776/framelayout-z-order-not-behaving-as-expected-on-gingerbread