Android 获取网络状态的工具类

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在工作中我们经常要用到网络,网络状态的检查必不可少,这是一个检查当前网络状态的工具类,直接粘过去就能用:
package com.todoo.android.app.utils;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
public class NetworkUtils
{
	public static final String NET_TYPE_WIFI = "WIFI";
	public static final String NET_TYPE_MOBILE = "MOBILE";
	public static final String NET_TYPE_NO_NETWORK = "no_network";
private Context mContext = null;
public NetworkUtils(Context pContext) {
this.mContext = pContext;
	}
public static final String IP_DEFAULT = "0.0.0.0";
public static boolean isConnectInternet(final Context pContext)
	{
final ConnectivityManager conManager = (ConnectivityManager) pContext.getSystemService(Context.CONNECTIVITY_SERVICE);
final NetworkInfo networkInfo = conManager.getActiveNetworkInfo();
if (networkInfo != null)
{
return networkInfo.isAvailable();
}
return false;
	}
public static boolean isConnectWifi(final Context pContext) {
ConnectivityManager mConnectivity = (ConnectivityManager) pContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = mConnectivity.getActiveNetworkInfo();
//判断网络连接类型,只有在3G或wifi里进行一些数据更新。
int netType = -1;
if(info != null){
netType = info.getType();
}
if (netType == ConnectivityManager.TYPE_WIFI) {
return info.isConnected();
} else {
return false;
}
	}
public static String getNetTypeName(final int pNetType)
	{
switch (pNetType)
{
case 0:
return "unknown";
case 1:
return "GPRS";
case 2:
return "EDGE";
case 3:
return "UMTS";
case 4:
return "CDMA: Either IS95A or IS95B";
case 5:
return "EVDO revision 0";
case 6:
return "EVDO revision A";
case 7:
return "1xRTT";
case 8:
return "HSDPA";
case 9:
return "HSUPA";
case 10:
return "HSPA";
case 11:
return "iDen";
case 12:
return "EVDO revision B";
case 13:
return "LTE";
case 14:
return "eHRPD";
case 15:
return "HSPA+";
default:
return "unknown";
}
	}
public static String getIPAddress()
	{
try
{
final Enumeration<NetworkInterface> networkInterfaceEnumeration = NetworkInterface.getNetworkInterfaces();
while (networkInterfaceEnumeration.hasMoreElements())
{
final NetworkInterface networkInterface = networkInterfaceEnumeration.nextElement();
final Enumeration<InetAddress> inetAddressEnumeration = networkInterface.getInetAddresses();
while (inetAddressEnumeration.hasMoreElements())
{
final InetAddress inetAddress = inetAddressEnumeration.nextElement();
if (!inetAddress.isLoopbackAddress())
{
return inetAddress.getHostAddress();
}
}
}
return NetworkUtils.IP_DEFAULT;
}
catch (final SocketException e)
{
return NetworkUtils.IP_DEFAULT;
}
	}
public String getConnTypeName() {
ConnectivityManager connectivityManager = (ConnectivityManager) this.mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if(networkInfo == null) {
return NET_TYPE_NO_NETWORK;
} else {
return networkInfo.getTypeName();
}
	}
}
最后不要忘了加上权限:<!-- 获取网络状态的权限 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
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