cn.newgxu.android.bbs.util.NewgxuUtils.java Source code

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Here is the source code for cn.newgxu.android.bbs.util.NewgxuUtils.java

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/*
 * Copyright (c) 2001-2013 newgxu.cn <the original author or authors>.
 *
 * 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 cn.newgxu.android.bbs.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Scanner;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
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 android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;

/**
 * .
 * 
 * @author longkai
 * @email im.longkai@gmail.com
 * @since 2013-5-21
 * @version 0.1
 */
public class NewgxuUtils {

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

    public static final String httpGet(String url) {
        return get(url, null);
    }

    public static final String get(String url, String charset) {
        HttpClient client = new DefaultHttpClient();
        HttpGet get = new HttpGet(url);
        get.setHeader("Accept", "application/json");
        HttpResponse response = null;
        HttpEntity entity = null;
        Scanner scanner = null;
        try {
            response = client.execute(get);
            entity = response.getEntity();
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                InputStream in = entity.getContent();
                scanner = new Scanner(in, charset == null ? "utf-8" : charset).useDelimiter("\\A");
                return scanner.hasNext() ? scanner.next() : null;
            }
        } catch (ClientProtocolException e) {
            Log.wtf(TAG, e);
        } catch (IOException e) {
            Log.wtf(TAG, e);
        } finally {
            try {
                if (entity != null) {
                    entity.consumeContent();
                }
            } catch (IOException e) {
                Log.wtf(TAG, e);
            }
        }
        return null;
    }

    public static final boolean connected(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo info = cm.getActiveNetworkInfo();
        if (info != null && info.isConnectedOrConnecting()) {
            return true;
        }
        return false;
    }

}