我的片段中的菜单项表现异常。 显示不正确

Question

如您从链接https://imgur.com/a/mJwzznS所看到的，菜单项是白色的，并且是一条直线。 这是我的存储库（如果我错过任何相关代码） https://github.com/Nikola-Milovic/QuoteAppMvvm/tree/FavoriteQuotes

//菜单XML

<menu xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto">

    <item android:title="Delete All Favorite Quotes"
            app:showAsAction="never"
            android:id="@+id/delete_All_Quotes_Item"
            />
</menu>

//使用菜单片段

<layout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools">

    <data>

        <import type="android.view.View" />

        <import type="androidx.core.content.ContextCompat" />

        <variable
                name="viewmodel"
                type="com.example.quoteappmvvm.ui.favorite.FavoriteQuotesViewModel" />
    </data>


    <FrameLayout
            android:id="@+id/framelayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/quotes_list"
                android:layout_width="match_parent"
                android:layout_height="match_parent" />


    </FrameLayout>

</layout>

//片段创建

        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        viewDataBinding = FavoriteQuotesFragmentBinding.inflate(inflater, container, false).apply {
            viewmodel = viewModel
        }
        viewDataBinding.setLifecycleOwner(this)


        viewModel.quoteList.observe(this) {
            viewDataBinding.quotesList.apply {
                layoutManager = LinearLayoutManager(activity)
                adapter = FavoriteQuotesAdapter(it)
                this.addItemDecoration(
                    DividerItemDecoration(
                        context!!,
                        DividerItemDecoration.VERTICAL
                    )
                )
            }
        }
        setHasOptionsMenu(true)
        return viewDataBinding.root
    }