41.2 Adding LiveData to the ViewModel

Launch Android Studio, open the ViewModelDemo project created in the previous chapter and edit the MainViewModel.kt file which should currently read as follows:

package com.ebookfrenzy.viewmodeldemo.ui.main

 

import androidx.lifecycle.ViewModel

 

class MainViewModel : ViewModel() {

 

    private val usd_to_eu_rate = 0.74f

    private var dollarText = ""

    private var result: Float = 0f

 

    fun setAmount(value: String) {

        this.dollarText = value

        result = value.toFloat() * usd_to_eu_rate

    }

 

    fun getResult(): Float? {

        return result

    }

}

The objective of this stage...