Android 获取网络状态的工具类

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</span>：

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();    }   }  }