1. Lifecycle
2. LiveData
kotlin
class MyViewModel : ViewModel() {
private val _data = MutableLiveData<String>()
val data: LiveData<String>
get() = _data
fun fetchData() {
_data.value = "New Data"
}
}
class MyActivity : AppCompatActivity() {
private lateinit var myViewModel: MyViewModel
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
myViewModel = ViewModelProvider(this).get(MyViewModel::class.java)
myViewModel.data.observe(this, Observer {
textView.text = it
})
}
}
