43.8 Adding the Conversion Method

When the Convert button is clicked, it is going to call a method on the ViewModel to perform the conversion calculation and place the euro value in the result LiveData variable. Add this method now within the MainViewModel.kt file:

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class MainViewModel : ViewModel() {

 

    private val usd_to_eu_rate = 0.74f

    public var dollarValue: MutableLiveData<String> = MutableLiveData()

    public var result: MutableLiveData<Float> = MutableLiveData()

 

    fun convertValue() {

        dollarValue.let {

            if (!it.value.equals("")) {

                result.value = it.value?.toFloat()?.times(usd_to_eu_rate)

  ...