40.8 Accessing the ViewModel Data

When the button is clicked, the onClick() method needs to read the current value from the EditText view, confirm that the field is not empty and then call the setAmount() method of the ViewModel instance. The method will then need to call the ViewModel’s getResult() method and display the converted value on the TextView widget.

Since LiveData is not yet being used in the project, it will also be necessary to get the latest result value from the ViewModel each time the Fragment is created.

Remaining in the MainFragment.kt file, implement these requirements as follows in the onActivityCreated() method:

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import androidx.lifecycle.ViewModelProvider

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override fun onActivityCreated(savedInstanceState: Bundle?) {

    super.onActivityCreated(savedInstanceState)

    viewModel = ViewModelProvider(this).get(MainViewModel::class.java)

 

    resultText...