Android - How to improve ListView performance when setting Theme.Translucent.NoTitleBar in Activity?

I have an activity with Theme.Translucent.NoTitleBar set as the activity's开发者_JAVA百科 style attribute in the manifest.xml.

<activity android:theme="@android:style/Theme.Translucent.NoTitleBar"/>

I need that, because when launching the activity, I animate the rootlayout of this activity from the bottom to the top (like the ModalPresentation on iPhone) and I don't want to have a black background during this animation.

Everythings works, but the performance of the ListView I put in this rootlayout is very slow after applying the translucent theme.

I already tried setting BackgroundColors of the ListView and the rootlayout, but it seems, that android still considers the transparency while drawing.

Have you tried: getWindow().setFormat(PixelFormat.RGBA_4444); in onCreate()?