onCreateOptionsMenu deprecation

Android Programming (5th Edition) 15. The App Bar
1

In the book, which I have, this is chapter 15 “The App Bar”. In the text ‘onCreateOptionsMenu’ is used to select a menu item. However, in Android Studio Dolphin | 2021.3.1 Patch 1 this is declared as deprecated. So I searched and found the solution on Stackoverflow (android - 'setHasOptionsMenu(Boolean): Unit' is deprecated. Deprecated in Java - Stack Overflow). The solution I selected and which works is the following in CrimeListFragment:

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        val menuHost: MenuHost = requireActivity())
        menuHost.addMenuProvider(object : MenuProvider {
            override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
                // Add menu items here
                menuInflater.inflate(R.menu.fragment_crime_list, menu)
            }

            /**
             * Responding to the user selecting an item in the menu, in this case
             * adding a new crime. Several menu items can be added here.
             */
            override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
                // Handle the menu selection
                return when (menuItem.itemId) {
                    R.id.new_crime -> {
                        showNewCrime()
                        true
                    }
                    else -> false
                }
            }
        })
    }

    /**
     * Function shows to user, which data to add to get a new crime added
     * to the database.
     */
    private fun showNewCrime() {
        viewLifecycleOwner.lifecycleScope.launch {
            val newCrime = Crime(
                id = UUID.randomUUID(),
                title = "",
                date = Date(),
                isSolved = false
            )
            crimeListViewModel.addCrime(newCrime)
            findNavController().navigate(
                CrimeListFragmentDirections.showCrimeDetail(newCrime.id)
            )
        }
    }
2

I have to make a correction, since from my first post the menu item (+) would not disappear when the crime details are shown. The overriding functions have to be under the onViewCreated function. Also viewLifecycleOwner, Lifecycle.State.RESUMED has to be added.

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        /******************************* NON DEPRECATED VERSION **************************/

        val menuHost: MenuHost = requireActivity()
        menuHost.addMenuProvider(object : MenuProvider {
            override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) {
                // Add menu items here
                menuInflater.inflate(R.menu.fragment_crime_list, menu)
            }       

            override fun onMenuItemSelected(menuItem: MenuItem): Boolean {
                return when (menuItem.itemId) {
                    R.id.new_crime -> {
                        showNewCrime()
                        true
                    }
                    else -> false
                }
            }
        }, viewLifecycleOwner, Lifecycle.State.RESUMED)
-----------
}