Roboto android xml font-family

roboto.xml

<font-family xmlns:app="http://schemas.android.com/apk/res-auto">
    <font
        app:font="@font/roboto_thin"
        app:fontStyle="normal"
        app:fontWeight="100" />
    <font
        app:font="@font/roboto_thinitalic"
        app:fontStyle="italic"
        app:fontWeight="100" />
    <font
        app:font="@font/roboto_light"
        app:fontStyle="normal"
        app:fontWeight="300" />
    <font
        app:font="@font/roboto_lightitalic"
        app:fontStyle="italic"
        app:fontWeight="300" />
    <font
        app:font="@font/roboto_regular"
        app:fontStyle="normal"
        app:fontWeight="400" />
    <font
        app:font="@font/roboto_italic"
        app:fontStyle="italic"
        app:fontWeight="400" />
    <font
        app:font="@font/roboto_medium"
        app:fontStyle="normal"
        app:fontWeight="500" />
    <font
        app:font="@font/roboto_mediumitalic"
        app:fontStyle="italic"
        app:fontWeight="500" />
    <font
        app:font="@font/roboto_bold"
        app:fontStyle="normal"
        app:fontWeight="700" />
    <font
        app:font="@font/roboto_bolditalic"
        app:fontStyle="italic"
        app:fontWeight="700" />
    <font
        app:font="@font/roboto_black"
        app:fontStyle="normal"
        app:fontWeight="900" />
    <font
        app:font="@font/roboto_blackitalic"
        app:fontStyle="italic"
        app:fontWeight="900" />
</font-family>