native-android-csharp/DemoAndroid/Resources/values/style.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <style name="Default" parent="@android:style/Theme.Material.Light.DarkActionBar">
        
    </style>
    <style name="NoActionBar" parent="@android:style/Theme.Material.Light.DarkActionBar">
        <item name="android:windowActionBar">false</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowFullscreen">true</item>
    </style>
</resources>