Как интегрировать средство выбора даты материала с базой данных помещений в приложении Task в Android, которое используе ⇐ Android

[Anonymous]

У меня есть простое приложение для задач, которое использует RecyclerView с привязкой данных и Room в качестве базы данных. Приложение работает нормально, но теперь я хочу добавить средство выбора даты материала, чтобы пользователи могли выбирать даты начала и окончания задач. У меня возникли проблемы с выяснением того, как интегрировать средство выбора даты материала с моей базой данных помещений. Вот соответствующие части моей настройки
@Entity(tableName="mesimah_table")
data class Mesimah (
@PrimaryKey(autoGenerate = true)
var taskId: Long = 0L,

@ColumnInfo(name="task_name")
var taskName: String = "",

@ColumnInfo(name="task_done")
var taskDone: Boolean = false,

@ColumnInfo(name="task_description")
var taskDescription: String = "",

@ColumnInfo(name="start_date")
var startDate: Long,

@ColumnInfo(name="end_date")
var endDate: Long
)

@Dao
interface TaskDao {
@Insert
suspend fun insert(tasks: Mesimah)

@Insert
suspend fun insertAll(tasks: List)

@Delete
suspend fun delete(task: Mesimah)

@Update
suspend fun update(task: Mesimah)

@Query("Select * From mesimah_table WHERE taskId = :taskId")
fun get(taskId: Long): LiveData

@Query("Select * FROM mesimah_table ORDER BY taskId DESC")
fun getAll(): LiveData
}


class TasksViewModel(val dao: TaskDao) : ViewModel() {
private val TAG = "TASKS_VIEW_MODEL"
private val _navigateToMesimah = MutableLiveData()
val navigateToMesimah: LiveData
get() = _navigateToMesimah

var newTaskName = ""
var newTaskDescription = ""
var start_date: Long = 0L
var end_date: Long = 0L
val tasks = dao.getAll()

fun addTask() {
viewModelScope.launch {
val task = Mesimah(
taskName = newTaskName,
taskDescription = newTaskDescription,
startDate = start_date,
endDate = end_date
)
Log.i(TAG,"before add task")
dao.insert(task)
Log.i(TAG,"after add task")
}
}

fun onTaskClicked(taskId: Long) {
_navigateToMesimah.value = taskId
}

fun onTaskNavigated() {
_navigateToMesimah.value = null
}
}

class MesimahFragment : Fragment() {
private val TAG: String = "MESIMAH FRAGMENT"
private var _binding: FragmentMesimahBinding? = null
private val binding get() = _binding!!

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

override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {

_binding = FragmentMesimahBinding.inflate(inflater, container,false)
val view = binding.root

val application = requireNotNull(this.activity).application
val dao = MesimahDatabase.getInstance(application).taskDao

val viewModelFactory = TasksViewModelFactory(dao)
val viewModel = ViewModelProvider(
this,viewModelFactory).get( TasksViewModel::class.java)

binding.btnOpenDatePicker.setOnClickListener {
showDateRangePicker()
}

binding.viewModel = viewModel
binding.lifecycleOwner = viewLifecycleOwner

Log.i(TAG, "Before adapter initialized")
val adapter = MesimahItemAdapter { taskId ->
viewModel.onTaskClicked(taskId)
}

binding.tasksListRecyclerView.adapter=adapter

viewModel.tasks.observe(viewLifecycleOwner, Observer {
it?.let {
adapter.submitList(it)
}
})

viewModel.navigateToMesimah.observe(viewLifecycleOwner, Observer { taskId ->
taskId?.let {
val action = MesimahFragmentDirections
.actionMesimahFragmentToMesimahEditFragment(taskId)
this.findNavController().navigate(action)
viewModel.onTaskNavigated()
}
})

return view
}

private fun showDateRangePicker() {
val dateRangePicker = MaterialDatePicker.Builder.dateRangePicker()
.setTitleText("Select Date Range")
.build()

dateRangePicker.show(parentFragmentManager, "date_range_picker")
dateRangePicker.addOnPositiveButtonClickListener { dateRange ->
val startDate = dateRange.first
val endDate = dateRange.second

val formatter = SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
val startDateString = formatter.format(Date(startDate))
val endDateString = formatter.format(Date(endDate))
val message = "Selected Date Range: $startDateString - $endDateString"
Toast.makeText(requireContext(), message,Toast.LENGTH_SHORT).show()
}
}

override fun onDestroyView() {
super.onDestroyView()
_binding = null
}

























Подробнее здесь: https://stackoverflow.com/questions/788 ... -in-androi