com.androidquery.simplefeed.data.Place.java Source code

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Here is the source code for com.androidquery.simplefeed.data.Place.java

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/*******************************************************************************
 * Copyright 2012 AndroidQuery (tinyeeliu@gmail.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * Additional Note:
 * 1. You cannot use AndroidQuery's Facebook app account in your own apps.
 * 2. You cannot republish the app as is with advertisements.
 ******************************************************************************/
package com.androidquery.simplefeed.data;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

import android.location.Location;

import com.androidquery.simplefeed.util.ParseUtility;

public class Place implements Serializable, Cloneable {

    private static final long serialVersionUID = 1L;

    private double latitude;
    private double longitude;
    private String city;
    private String country;
    private String name;
    private String id;
    private String category;
    private String tb;

    public Place() {

    }

    public Place(JSONObject jo) {

        name = jo.optString("name");
        id = jo.optString("id");
        category = jo.optString("category");

        JSONObject lo = jo.optJSONObject("location");

        if (lo != null) {
            latitude = lo.optDouble("latitude", 0);
            longitude = lo.optDouble("longitude", 0);
            city = lo.optString("city", null);
            country = lo.optString("country", null);
        }

        if (id != null) {
            tb = ParseUtility.profileTb(id);// + "#" + name;
        }
    }

    public static List<Place> getItems(JSONObject jo) {
        JSONArray data = jo.optJSONArray("data");
        List<Place> feed = toList(data);
        return feed;
    }

    private static List<Place> toList(JSONArray ja) {

        List<Place> result = new ArrayList<Place>();

        for (int i = 0; i < ja.length(); i++) {
            result.add(new Place(ja.optJSONObject(i)));

        }

        return result;
    }

    public static Place make(JSONObject jo) {

        if (jo == null)
            return null;
        return new Place(jo);

    }

    public double getLatitude() {
        return latitude;
    }

    public void setLatitude(double latitude) {
        this.latitude = latitude;
    }

    public double getLongitude() {
        return longitude;
    }

    public void setLongitude(double longitude) {
        this.longitude = longitude;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getCountry() {
        return country;
    }

    public void setCountry(String country) {
        this.country = country;
    }

    public static void sortByDistance(Location loc, List<Place> items) {

        Collections.sort(items, new PlaceComparator(loc));

    }

    private static class PlaceComparator implements Comparator<Place> {

        private Location loc;

        public PlaceComparator(Location loc) {
            this.loc = loc;
        }

        @Override
        public int compare(Place lhs, Place rhs) {

            int d1 = lhs.getDistance(loc);
            int d2 = rhs.getDistance(loc);

            return d1 - d2;

        }

    }

    private int distance = -1;

    public int getDistance(Location loc) {

        if (distance == -1) {
            distance = (int) distFrom(getLatitude(), getLongitude(), loc.getLatitude(), loc.getLongitude());
        }

        return distance;
    }

    public static double distFrom(double lat1, double lng1, double lat2, double lng2) {

        double earthRadius = 3958.75;
        double dLat = Math.toRadians(lat2 - lat1);
        double dLng = Math.toRadians(lng2 - lng1);
        double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(Math.toRadians(lat1))
                * Math.cos(Math.toRadians(lat2)) * Math.sin(dLng / 2) * Math.sin(dLng / 2);
        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
        double dist = earthRadius * c;

        int meterConversion = 1609;
        return new Double(dist * meterConversion);

    }

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getId() {
        return id;
    }

    public void setCategory(String category) {
        this.category = category;
    }

    public String getCategory() {
        return category;
    }

    public void setTb(String tb) {
        this.tb = tb;
    }

    public String getTb() {
        return tb;
    }
}