com.learnncode.twitter.async.HashtagTweetFetchAsyncTask.java Source code

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Here is the source code for com.learnncode.twitter.async.HashtagTweetFetchAsyncTask.java

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/*
 * Copyright 2014 - learnNcode (learnncode@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.
 */

package com.learnncode.twitter.async;

import java.util.ArrayList;
import java.util.List;

import twitter4j.Query;
import twitter4j.QueryResult;
import twitter4j.Twitter;
import android.content.Context;
import android.os.AsyncTask;

import com.learnncode.twitter.Utilities.AppSettings;
import com.learnncode.twitter.Utilities.AppUtilities;
import com.learnncode.twitter.Utilities.TwitterHelper;
import com.learnncode.twitter.interfaces.IHashtagTweetList;

public class HashtagTweetFetchAsyncTask extends AsyncTask<Object, Void, List<twitter4j.Status>> {

    Context mContext;
    String hashtag;
    IHashtagTweetList iHashTagList;
    long lastSeenId = 0;

    public HashtagTweetFetchAsyncTask(Context _context, String hashtag, Long id, IHashtagTweetList iHashTagList) {
        mContext = _context;
        this.hashtag = hashtag;
        this.iHashTagList = iHashTagList;
        lastSeenId = id;
    }

    @Override
    protected List<twitter4j.Status> doInBackground(Object... params) {

        List<twitter4j.Status> list = new ArrayList<twitter4j.Status>();
        if (AppUtilities.IsNetworkAvailable(mContext)) {

            try {
                Twitter twitter;
                if (AppSettings.isTwitterAuthenticationDone(mContext)) {
                    twitter = TwitterHelper.getTwitterInstance(mContext);

                } else {
                    twitter = TwitterHelper.getTwitterInstanceWithoutAuthentication(mContext);
                }
                Query query = new Query(hashtag);
                query.count(10);
                if (lastSeenId != 0) {
                    query.setMaxId(lastSeenId);
                }
                QueryResult qr = twitter.search(query);
                List<twitter4j.Status> qrTweets = qr.getTweets();

                for (twitter4j.Status t : qrTweets) {
                    list.add(t);
                }

            } catch (Exception e) {
                System.err.println();
            }
        }
        if (lastSeenId != 0) {
            iHashTagList.setTweetList(list, true);
        } else {
            iHashTagList.setTweetList(list, false);
        }

        return list;
    }

}