es.curso.android.GooglePlaces.Api.java Source code

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Here is the source code for es.curso.android.GooglePlaces.Api.java

Source

/*
 *
 *  Copyright (C) Roberto Calvo Palomino
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/. 
 *
 *  Author : Roberto Calvo Palomino <rocapal at gmail dot com>
 *
 */

package es.curso.android.GooglePlaces;

import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Type;
import java.util.ArrayList;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONException;
import org.json.JSONObject;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.reflect.TypeToken;

public class Api {

    private final String TAG = getClass().getSimpleName();

    private final String SEARCH = "http://www.panoramio.com/map/get_panoramas.php?set=public&" + "from=%d&to=%d&"
            + "minx=%f&miny=%f&" + "maxx=%f&maxy=%f&" + "size=small&mapfilter=true";

    public Api() {

    }

    public String getUrl(Double latitude, Double longitude, Integer radio, Integer from, Integer to) {

        Double minY = latitude - (radio / (69 * 1.609344));
        Double maxY = latitude + (radio / (69 * 1.609344));
        Double minX = longitude - (radio / (69 * 1.609344) * 1);
        Double maxX = longitude + (radio / (69 * 1.609344) * 1);

        Log.d(TAG, String.format(SEARCH, from, to, minX, minY, maxX, maxY, longitude));
        return String.format(SEARCH, from, to, minX, minY, maxX, maxY, longitude);
    }

    public ArrayList<Node> searchNodes(Double latitude, Double longitude, Integer radio, Integer from, Integer to) {

        String strJson = doGetPetition(getUrl(latitude, longitude, radio, from, to));

        return parseJSON(strJson);
    }

    public ArrayList<Node> parseJSON(String strJson) {

        JSONObject json;
        String arrayStr = "";
        try {
            json = new JSONObject(strJson);
            arrayStr = json.getJSONArray("photos").toString();
        } catch (JSONException e) {
            Log.e(TAG, e.getMessage());
        }

        Gson gson = new GsonBuilder().create();

        Type listOfNode = new TypeToken<ArrayList<Node>>() {
        }.getType();

        ArrayList<Node> array = gson.fromJson(arrayStr, listOfNode);

        Log.d(TAG, "Size: " + String.valueOf(array.size()));

        for (int i = 0; i < array.size(); i++) {
            Log.d(TAG, String.valueOf(array.get(i).photo_file_url));
        }

        return array;

    }

    private String doGetPetition(String url) {
        try {
            DefaultHttpClient httpclient = new DefaultHttpClient();
            HttpGet httpGet = null;
            httpGet = new HttpGet(url);
            HttpResponse response = httpclient.execute(httpGet);
            HttpEntity entity = response.getEntity();
            String str = EntityUtils.toString(entity);
            return str;
        }

        catch (IOException e) {
            Log.e(TAG, e.getMessage());
            return null;
        }
    }

    public Bitmap doGetImagePetition(String url) {

        try {
            DefaultHttpClient httpclient = new DefaultHttpClient();
            HttpGet httpGet = null;

            httpGet = new HttpGet(url);
            HttpResponse response = httpclient.execute(httpGet);

            InputStream inputStream;

            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                inputStream = response.getEntity().getContent();
                return BitmapFactory.decodeStream(inputStream);
            }

            return null;

        } catch (IOException e) {
            Log.e(TAG, e.getMessage());
            return null;
        }
    }

}