Simplest ViewModel & LiveData usage on Android

DummyViewModel.kt & MainActivity.kt

class DummyViewModel : ViewModel() {

    var data : MutableLiveData<String> = MutableLiveData()

    internal fun setData(some_value : String){
        data.value = some_value
    }
}

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class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        
        

        var viewModel = ViewModelProviders.of(this).get(DummyViewModel::class.java)
        viewModel.setData("naaice")

        viewModel.data.observe(
                this, Observer { image ->
            run {
                Log.i("observed_path", image)
            }
        })



        val handler = Handler()
        val r = object:Runnable {
            public override fun run() {
                viewModel.setData("naaice 2222")
            }
        }
        handler.postDelayed(r, 5000)
        handler.postDelayed(r, 10000)


        /**
         * Output when MainActivity is on the Screen
         * -----------------------------------------
         * 
         *  I/observed_path: naaice
         *  I/observed_path: naaice 2222
         *  I/observed_path: naaice 2222
         */


        
    }
}