gxu.software_engineering.market.android.service.SyncService.java Source code

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Here is the source code for gxu.software_engineering.market.android.service.SyncService.java

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/*
 * Copyright 2013 Department of Computer Science and Technology, Guangxi University
 *
 * 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.
 */
package gxu.software_engineering.market.android.service;

import java.io.IOException;
import java.util.Calendar;

import gxu.software_engineering.market.android.util.NetworkUtils;
import gxu.software_engineering.market.android.util.RESTMethod;
import org.json.JSONException;
import org.json.JSONObject;

import gxu.software_engineering.market.android.MarketApp;
import gxu.software_engineering.market.android.R;
import gxu.software_engineering.market.android.util.C;
import gxu.software_engineering.market.android.util.Processor;
import android.app.IntentService;
import android.content.ContentValues;
import android.content.Intent;
import android.net.Uri;
import android.os.Handler;
import android.text.format.DateUtils;
import android.util.Log;
import android.widget.Toast;

/**
 * 
 * @author longkai()
 * @email  im.longkai@gmail.com
 * @since  2013-6-25
 */
public class SyncService extends IntentService {

    private static final String TAG = SyncService.class.getSimpleName();

    private Handler handler;
    private MarketApp app;

    public SyncService() {
        super(TAG);
    }

    @Override
    public void onCreate() {
        super.onCreate();
        app = MarketApp.marketApp();
        handler = new Handler();
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        //      ??
        if (!NetworkUtils.connected(getApplicationContext())) {
            return;
        }
        //      ??
        long lastSyncMills = app.getPrefs().getLong(C.LAST_SYNC, 0);
        if (lastSyncMills == 0L) {
            Calendar c = Calendar.getInstance();
            c.set(Calendar.YEAR, 1980);
            lastSyncMills = c.getTimeInMillis();
        }

        String uri = C.DOMAIN + String.format("/sync?count=%d&last=%s", C.DEFAULT_LIST_SIZE, lastSyncMills);

        JSONObject result = null;
        try {
            result = RESTMethod.get(uri);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        boolean nice = false;
        ContentValues[] categories = null;
        ContentValues[] users = null;
        ContentValues[] items = null;
        try {
            if (result.getInt(C.STATUS) == C.OK) {
                nice = true;
                categories = Processor.toCategories(result.getJSONArray(C.CATEGORIES));
                users = Processor.toUsers(result.getJSONArray(C.USERS));
                items = Processor.toItems(result.getJSONArray(C.ITEMS));
            } else {
                throw new RuntimeException(result.getString(C.MSG));
            }
        } catch (Exception e) {
            Log.wtf("synv json result error!", e);
            final String msg = e.getMessage();
            handler.post(new Runnable() {
                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(), getResources().getString(R.string.sync_error, msg),
                            Toast.LENGTH_SHORT).show();
                }
            });
        }

        if (nice) {
            getContentResolver().bulkInsert(Uri.parse(C.BASE_URI + C.CATEGORIES), categories);
            getContentResolver().bulkInsert(Uri.parse(C.BASE_URI + C.USERS), users);
            getContentResolver().bulkInsert(Uri.parse(C.BASE_URI + C.ITEMS), items);

            final long now = System.currentTimeMillis();

            //         
            app.getPrefs().edit().putLong(C.LAST_SYNC, now).commit();

            //         ????
            handler.post(new Runnable() {

                @Override
                public void run() {
                    Toast.makeText(getApplicationContext(),
                            getResources().getString(R.string.sync_nice, DateUtils.getRelativeTimeSpanString(now)),
                            Toast.LENGTH_SHORT).show();
                }
            });
        }
    }

}