TANetWorkUtil.java

/*
 * Copyright (C) 2013  WhiteCat 白猫 (www.thinkandroid.cn)
 *
 * 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.ta.util.netstate;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/**
 * @Title NetWorkUtil
 * @Package com.ta.util.netstate
 * @Description 是检测网络的一个工具包
 * @author 白猫
 * @date 2013-1-22 下午 9:35
 * @version V1.0
 */
public class TANetWorkUtil
{
	public static enum netType
	{
		wifi, CMNET, CMWAP, noneNet
	}

	/**
	 * 网络是否可用
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isNetworkAvailable(Context context)
	{
		ConnectivityManager mgr = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo[] info = mgr.getAllNetworkInfo();
		if (info != null)
		{
			for (int i = 0; i < info.length; i++)
			{
				if (info[i].getState() == NetworkInfo.State.CONNECTED)
				{
					return true;
				}
			}
		}
		return false;
	}

	/**
	 * 判断是否有网络连接
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isNetworkConnected(Context context)
	{
		if (context != null)
		{
			ConnectivityManager mConnectivityManager = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mNetworkInfo = mConnectivityManager
					.getActiveNetworkInfo();
			if (mNetworkInfo != null)
			{
				return mNetworkInfo.isAvailable();
			}
		}
		return false;
	}

	/**
	 * 判断WIFI网络是否可用
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isWifiConnected(Context context)
	{
		if (context != null)
		{
			ConnectivityManager mConnectivityManager = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mWiFiNetworkInfo = mConnectivityManager
					.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
			if (mWiFiNetworkInfo != null)
			{
				return mWiFiNetworkInfo.isAvailable();
			}
		}
		return false;
	}

	/**
	 * 判断MOBILE网络是否可用
	 * 
	 * @param context
	 * @return
	 */
	public static boolean isMobileConnected(Context context)
	{
		if (context != null)
		{
			ConnectivityManager mConnectivityManager = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mMobileNetworkInfo = mConnectivityManager
					.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
			if (mMobileNetworkInfo != null)
			{
				return mMobileNetworkInfo.isAvailable();
			}
		}
		return false;
	}

	/**
	 * 获取当前网络连接的类型信息
	 * 
	 * @param context
	 * @return
	 */
	public static int getConnectedType(Context context)
	{
		if (context != null)
		{
			ConnectivityManager mConnectivityManager = (ConnectivityManager) context
					.getSystemService(Context.CONNECTIVITY_SERVICE);
			NetworkInfo mNetworkInfo = mConnectivityManager
					.getActiveNetworkInfo();
			if (mNetworkInfo != null && mNetworkInfo.isAvailable())
			{
				return mNetworkInfo.getType();
			}
		}
		return -1;
	}

	/**
	 * 
	 * @author 白猫
	 * 
	 *         获取当前的网络状态 -1：没有网络 1：WIFI网络2：wap 网络3：net网络
	 * 
	 * @param context
	 * 
	 * @return
	 */
	public static netType getAPNType(Context context)
	{
		ConnectivityManager connMgr = (ConnectivityManager) context
				.getSystemService(Context.CONNECTIVITY_SERVICE);
		NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
		if (networkInfo == null)
		{
			return netType.noneNet;
		}
		int nType = networkInfo.getType();

		if (nType == ConnectivityManager.TYPE_MOBILE)
		{
			if (networkInfo.getExtraInfo().toLowerCase().equals("cmnet"))
			{
				return netType.CMNET;
			}

			else
			{
				return netType.CMWAP;
			}
		} else if (nType == ConnectivityManager.TYPE_WIFI)
		{
			return netType.wifi;
		}
		return netType.noneNet;

	}
}