ToolBar菜单项在片段中单击(Kotlin)

<androidx.appcompat.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    android:elevation="4dp"
    android:theme="@style/ThemeOverlay.AppCompat.ActionBar" />

<!-- 定义菜单项 -->
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/menu_item1"
        android:title="菜单项1"
        android:icon="@drawable/ic_menu_item1"
        android:showAsAction="ifRoom" />
    <item
        android:id="@+id/menu_item2"
        android:title="菜单项2"
        android:icon="@drawable/ic_menu_item2"
        android:showAsAction="ifRoom" />
</menu>

override fun onCreateView(
    inflater: LayoutInflater,
    container: ViewGroup?,
    savedInstanceState: Bundle?
): View? {
    val view = inflater.inflate(R.layout.fragment_layout, container, false)
    
    val toolbar = view.findViewById<Toolbar>(R.id.toolbar)
    (activity as AppCompatActivity).setSupportActionBar(toolbar)
    
    return view
}

override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
    inflater.inflate(R.menu.menu_fragment, menu)
    super.onCreateOptionsMenu(menu, inflater)
}

override fun onOptionsItemSelected(item: MenuItem): Boolean {
    when (item.itemId) {
        R.id.menu_item1 -> {
            // 处理菜单项1的点击事件
            return true
        }
        R.id.menu_item2 -> {
            // 处理菜单项2的点击事件
            return true
        }
        else -> return super.onOptionsItemSelected(item)
    }
}