Gallery2: Disable dummy starting window

    </style>

    <style name="AppTheme" parent="android:Theme.Material.Light">

        <item name="android:windowDisablePreview">true</item>

        <item name="android:windowDrawsSystemBarBackgrounds">true</item>

        <item name="android:windowBackground">@android:color/black</item>

        <item name="android:statusBarColor">@android:color/transparent</item>