grape

ViewModel class ViewModel() : ViewModel() { //EditText support String simple private val _text = MutableLiveData(String) val text: LiveData = _text //EditText not support Int need BindingAdapter private val _num = MutableLiveData(String) val num: LiveData = _num layout

simple data binding https://developer.android.com/jetpack/androidx/releases/databinding gradle android { ... buildFeatures { dataBinding true } } Activity //connect activity & binding & viewmodel class NameActivity : AppCompatActivity() { private val viewModel: ViewModel by viewModels() //auto generate ActivityNameBinding private lateinit var binding : ActivityNameBinding override fun onCreate(s..