GenericActivity

Activity.kt

class MainActivity: AppCompatActivity(), GenericAdapter.AppAdapterListener<Movie> {

    private lateinit var recyclerView: RecyclerView
    private lateinit var searchView: SearchView
    private var adapter: GenericAdapter<Movie>? = null

    // ...

    private fun setupAdapter(movies: List<Movie>) {
        adapter = GenericAdapter<Movie>(movies)
        adapter?.listener = this
        recyclerView.adapter = adapter
    }

    override fun onItemClick(model: Movie, position: Int) {
        //Do what you want with the object
    }

    //...
    
    private fun setupSearch(menu: Menu?) {
        val searchManager = getSystemService(Context.SEARCH_SERVICE) as SearchManager
        searchView = menu?.findItem(R.id.app_bar_search)
            ?.actionView as SearchView
        searchView.setSearchableInfo(searchManager
            .getSearchableInfo(componentName))
        searchView.maxWidth = Integer.MAX_VALUE
        searchView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
            override fun onQueryTextSubmit(query: String): Boolean {
                adapter?.filter?.filter(query)
                return false
            }
            override fun onQueryTextChange(query: String): Boolean {
                adapter?.filter?.filter(query)
                return false
            }
        })
    }
    
    // ...
}