org.mixare.utils.TwitterClient.java Source code

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Here is the source code for org.mixare.utils.TwitterClient.java

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/*
 /*
 * Copyright (C) 2010- Peer internet solutions
 *
 * This file is part of mixare.
 *
 * 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/>
 */
package org.mixare.utils;

import org.mixare.Config;

import android.util.Log;
import twitter4j.GeoLocation;
import twitter4j.Query;
import twitter4j.QueryResult;
import twitter4j.Status;
import twitter4j.Twitter;
import twitter4j.TwitterFactory;
import twitter4j.conf.ConfigurationBuilder;
import twitter4j.json.DataObjectFactory;

/**
 * Twitter client wrapper used to make searches for tweets with the new Rest API
 * @author Michele Di Capua
 *
 */
public class TwitterClient {
    private static double lat = 0;
    private static double lon = 0;
    private static double rad = 20;//default radius

    /**
     * Set configuration for twitter client (lat, lon, radius) 
     * @param latitude
     * @param longitude
     * @param radius
     */
    public static void config(double latitude, double longitude, double radius) {
        lat = latitude;
        lon = longitude;
        rad = radius;
    }

    /**
     * Query the twitter search API using oAuth 2.0
     * @return
     */
    public static String queryData() {
        ConfigurationBuilder cb = new ConfigurationBuilder(); //to be configured in a properties...
        cb.setDebugEnabled(true).setOAuthConsumerKey("mt10dv6tTKacqlm14lw5w")
                .setOAuthConsumerSecret("4kRV1E1XIU3kj4JQj2R5LE1yct0RRaRl9sB5PpPrB0")
                .setOAuthAccessToken("390019380-IQ5VdvUKvxY9JOsTToEU8ElCabebc76H9X2g3QX4")
                .setOAuthAccessTokenSecret("ghJn4LTfDr7uHUCsbt6ycmpeVTwwpa3hZnXyEjyZvs");
        cb.setJSONStoreEnabled(true);

        TwitterFactory tf = new TwitterFactory(cb.build());
        Twitter twitter = tf.getInstance();

        Query query = new Query();
        query = query.geoCode(new GeoLocation(lat, lon), rad, Query.KILOMETERS);

        String jsonArrayAsString = "{\"results\":[";//start
        try {
            QueryResult result = twitter.search(query);
            int size = 0;
            for (Status status : result.getTweets()) {
                {
                    if (status.getGeoLocation() != null) {
                        String jsonSingleObject = DataObjectFactory.getRawJSON(status);
                        if (size == 0)
                            jsonArrayAsString += jsonSingleObject;
                        else
                            jsonArrayAsString += "," + jsonSingleObject;
                        size++;
                    }
                }
            }
            jsonArrayAsString += "]}";//close array
            return jsonArrayAsString;
        } catch (Exception e) {
            Log.e(Config.TAG, "Error querying twitter data :" + e);
            e.printStackTrace();
        }
        return null;
    }
}