com.mobileaffairs.seminar.videolib.VideoLibSyncAdapter.java Source code

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Here is the source code for com.mobileaffairs.seminar.videolib.VideoLibSyncAdapter.java

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package com.mobileaffairs.seminar.videolib;

/*
 * This code is part of the Android Development Course developed by Mobile Affairs LTD for demo purposes
 * http://www.mobile-affairs.com
 * 
 * Copyright (c) 2012 Mobile Affairs LTD.
 * Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php 
 *
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, 
 * and to permit persons to whom the Software is furnished to do so, subject to the following conditions
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
    
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONObject;

import android.accounts.Account;
import android.content.AbstractThreadedSyncAdapter;
import android.content.ContentProviderClient;
import android.content.ContentValues;
import android.content.Context;
import android.content.SyncResult;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;

public class VideoLibSyncAdapter extends AbstractThreadedSyncAdapter {

    public VideoLibSyncAdapter(Context context, boolean autoInitialize) {
        super(context, autoInitialize);

    }

    @Override
    public void onPerformSync(Account account, Bundle extras, String authority, ContentProviderClient provider,
            SyncResult syncResult) {

        String videosJson = readVideosFromRemoteService();
        try {
            JSONArray jsonArray = new JSONArray(videosJson);
            Log.i("SyncAdapter", "Number of entries " + jsonArray.length());
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObject = jsonArray.getJSONObject(i);
                Cursor cs = provider.getLocalContentProvider().query(
                        Uri.parse(VideoLibContentProvider.CONTENT_URI + "/" + jsonObject.getString("id")), null,
                        null, null, null);
                long count = cs.getCount();
                cs.close();
                if (count == 0) {
                    ContentValues values = new ContentValues();
                    values.put("_id", jsonObject.getString("id"));
                    values.put("title", jsonObject.getString("title"));
                    values.put("duration", jsonObject.getString("duration"));
                    values.put("videoUrl", jsonObject.getString("url"));
                    byte[] imageBytes = readImage(jsonObject.getString("thumbnail_small"));
                    if (imageBytes != null && imageBytes.length > 0) {
                        values.put("thumbnail", imageBytes);
                    }
                    provider.getLocalContentProvider().insert(VideoLibContentProvider.CONTENT_URI, values);
                }
                syncResult.fullSyncRequested = true;
            }
        } catch (Exception e) {
            e.printStackTrace();

        }
    }

    private String readVideosFromRemoteService() {
        StringBuilder builder = new StringBuilder();
        HttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet("http://vimeo.com/api/v2/group/shortfilms/videos.json");

        try {
            HttpResponse response = client.execute(httpGet);
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) {
                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                while ((line = reader.readLine()) != null) {
                    builder.append(line);
                }
            } else {
                Log.e("readVideos", "Failed to download file");
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return builder.toString();
    }

    private byte[] readImage(String url) {
        HttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);
        try {
            HttpResponse response = client.execute(httpGet);
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) {
                HttpEntity entity = response.getEntity();
                byte[] imageBytes = EntityUtils.toByteArray(entity);
                return imageBytes;
            } else {
                Log.e("readImage", "Failed to download file");
            }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }
}