Arraylist In SharedPreference Android Example

import android.content.Context;

import android.content.SharedPreferences;

import android.content.SharedPreferences.Editor;

import com.google.gson.Gson;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

public class SharedPreference {

    public static final String PREFS_NAME = "Valkesh_android";

    public static final String FAVORITES = "Developer_favorites";

    public SharedPreference() {

        super();

    }

public void storeFavorites(Context context, List favorites) {

// used for store arrayList in json format

        SharedPreferences settings;

        Editor editor;

        settings = context.getSharedPreferences(PREFS_NAME,Context.MODE_PRIVATE);

        editor = settings.edit();

        Gson gson = new Gson();

        String jsonFavorites = gson.toJson(favorites);

        editor.putString(FAVORITES, jsonFavorites);

        editor.commit();

    }

    public ArrayList loadFavorites(Context context) {

// used for retrieving arraylist from json formatted string

        SharedPreferences settings;

        List favorites;

        settings = context.getSharedPreferences(PREFS_NAME,Context.MODE_PRIVATE);

        if (settings.contains(FAVORITES)) {

            String jsonFavorites = settings.getString(FAVORITES, null);

            Gson gson = new Gson();

            BeanSampleList[] favoriteItems = gson.fromJson(jsonFavorites,BeanSampleList[].class);

            favorites = Arrays.asList(favoriteItems);

            favorites = new ArrayList(favorites);

        } else

            return null;

        return (ArrayList) favorites;

    }

    public void addFavorite(Context context, BeanSampleList beanSampleList) {

        List favorites = loadFavorites(context);

        if (favorites == null)

            favorites = new ArrayList();

        favorites.add(beanSampleList);

        storeFavorites(context, favorites);

    }

    public void removeFavorite(Context context, BeanSampleList beanSampleList) {

        ArrayList favorites = loadFavorites(context);

        if (favorites != null) {

            favorites.remove(beanSampleList);

            storeFavorites(context, favorites);

        }

    }

}