Room Advanced - 4 (Create / Read)

 

	class MainActivity : AppCompatActivity() {
	private val viewModel : MainViewModel by viewModels()
	override fun onCreate(savedInstanceState: Bundle?) {
	super.onCreate(savedInstanceState)
	setContentView(R.layout.activity_main)
	// Create
	val createBtn = findViewById<Button>(R.id.create)
	createBtn.setOnClickListener {
	val ranNumber = (0..100).random().toString()
	val userEntity = NumberEntity(0, ranNumber)
	viewModel.create(userEntity)
	}
	viewModel.read()
	viewModel.userEntityList.observe(this, Observer {
	Log.d("Main", it.toString())
	})
	}
	}

view raw MainActivity.kt hosted with ❤ by GitHub

	class MainViewModel : ViewModel() {
	private val repository = Repository()
	lateinit var userEntityList : LiveData<List<NumberEntity>>
	fun create(userEntity: NumberEntity) = viewModelScope.launch(Dispatchers.IO){
	repository.create(userEntity)
	}
	fun read() {
	userEntityList = repository.read().asLiveData()
	}
	fun update(){
	}
	fun delete(){
	}
	}

view raw MainViewModel.kt hosted with ❤ by GitHub