hcp-pad/game/src/main/res/values/themes.xml

<resources xmlns:tools="http://schemas.android.com/tools">

    <style name="IntroduceFullActivity" parent="Theme.AppCompat.Light.NoActionBar" tools:ignore="ResourceName">
        <item name="windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="android:windowFullscreen">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowIsTranslucent">false</item>
        <item name="android:windowBackground">@mipmap/icon_game_loading_bg</item>
    </style>

    <style name="PlayeFullActivity" parent="Theme.AppCompat.Light.NoActionBar" tools:ignore="ResourceName">
        <item name="windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="android:windowFullscreen">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowIsTranslucent">false</item>
        <item name="android:windowBackground">@mipmap/icon_game_loading_bg</item>
    </style>

</resources>