HomePageFragment.kt

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)
    homeRecycler.layoutManager = LinearLayoutManager(context, LinearLayoutManager.VERTICAL, false)
    homeRecycler.adapter = adapter

    homeViewModel.homePage.observe(this, Observer { resource ->
        resource?.apply {
            when (resource.status) {

                SUCCESS -> {
                    adapter.isLoading = false
                    adapter.homePage = resource.data!!
                    adapter.notifyDataSetChanged()
                }
                ERROR -> {
                    Toast.makeText(activity, resource.message.orEmpty(), Toast.LENGTH_SHORT).show()
                    adapter.isLoading = false
                }
                LOADING -> {
                    adapter.isLoading = true
                }
            }
        }
    })
}