34.2 Adding LiveData to the ViewModel

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

package com.ebookfrenzy.viewmodeldemo.ui.main;

 

import androidx.lifecycle.ViewModel;

 

public class MainViewModel extends ViewModel {

 

    private static final Float usd_to_eu_rate = 0.74F;

    private String dollarText = "";

    private Float result = 0F;

 

    public void setAmount(String value) {

        this.dollarText = value;

        result = Float.valueOf(dollarText)*usd_to_eu_rate;

    }

 

    public Float getResult()

    {

        ...