styles.xml

<resources>

    <style name="SplashTheme" parent="AppTheme">
        <!--<item name="android:windowBackground">@mipmap/bg_splash</item>-->
        <!--<item name="android:windowBackground">@drawable/ic_splash</item>-->
        <item name="android:windowBackground">@drawable/bg_splash_style</item>
        <item name="android:windowFullscreen">true</item>
        <item name="android:windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>
    <declare-styleable name="CircleHead">
        <attr name="circleBorderHeadWidth" format="dimension"/>
        <attr name="ringHeadColor" format="color"/>
        <attr name="backgroundHeadColor" format="color"/>
    </declare-styleable>

</resources>