主題 Theme.AppCompat.Light.NoActionBar

    <style name="Theme.Lld" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Primary brand color. -->
        <item name="colorPrimary">@color/purple_500</item>
        <item name="colorPrimaryVariant">@color/purple_700</item>
        <item name="colorOnPrimary">@color/white</item>
        <!-- Secondary brand color. -->
        <item name="colorSecondary">@color/teal_200</item>
        <item name="colorSecondaryVariant">@color/teal_700</item>
        <item name="colorOnSecondary">@color/black</item>
        <!-- Status bar color. -->
        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
        <!-- Customize your theme here. -->
    </style>

View配置

 <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/main_navigation"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/white"
        app:itemBackground="@null"
        app:itemIconTint="@null"
        app:itemTextColor="@drawable/home_navigation_color_selector"
        app:labelVisibilityMode="labeled"
        app:menu="@menu/bottom_nav_menu" />