fragment.kt

class RegisterAddressFragment : FragmentViewModel() {
  private val provinceList = mutableListOf<String>()
   
  private lateinit var adpProvince: ArrayAdapter<String>
  
  override fun onCreate(savedInstanceState: Bundle?) {
    /*
    provinceList sudah terisi dari LiveData
    */
        adpProvince = ArrayAdapter(context!!, android.R.layout.simple_spinner_item, provinceList)
    }


    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? =
            inflater.inflate(R.layout.fragment_register_address, container, false)

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

      // set adapter to spinner
        spProvince.adapter = adpProvince
    }

}