MSMC MSMC - 1 year ago 44
Java Question

Sorting List of objects in android

Suppose I have the following object class:

public class Country {
private int ID;
private String name;
private Double distance;

and I have a list of this object which contain many objects:

List<Country> myList;

how i can sort the list based on the
Double distance
e.g to put objects with less distance first? Is there a ready function to do this?

Or i want to store 3 countries of minimum distances in another list.

Answer Source

Use Collection.sort and pass your own implementation of Comparator


List<Country> items = new ArrayList<Country>();

Collections.sort(items, new Comparator<Country>() {

    public int compare(Country o1, Country o2) {
        return, o2.getDistance());