public static String getLocalIpAddress(){
 
 try{
 for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
  NetworkInterface intf = en.nextElement(); 
  for (Enumeration<InetAddress> enumIpAddr = intf 
  .getInetAddresses(); enumIpAddr.hasMoreElements();) { 
  InetAddress inetAddress = enumIpAddr.nextElement(); 
  if (!inetAddress.isLoopbackAddress()) { 
  
  return inetAddress.getHostAddress().toString(); 
  } 
  } 
 }
 }catch (SocketException e) {
 // TODO: handle exception
 Utils.log("WifiPreference IpAddress---error-" + e.toString());
 }
 
 return null; 
 }

InetAddressUtils.isIPv4Address(inetAddress.getHostAddress());

public static String getLocalIpAddress(){
 
 try{
 for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
  NetworkInterface intf = en.nextElement(); 
  for (Enumeration<InetAddress> enumIpAddr = intf 
  .getInetAddresses(); enumIpAddr.hasMoreElements();) { 
  InetAddress inetAddress = enumIpAddr.nextElement(); 
  if (!inetAddress.isLoopbackAddress() && InetAddressUtils.isIPv4Address(inetAddress.getHostAddress())) { 
  
  return inetAddress.getHostAddress().toString(); 
  } 
  } 
 }
 }catch (SocketException e) {
 // TODO: handle exception
 Utils.log("WifiPreference IpAddress---error-" + e.toString());
 }
 
 return null; 
 }

public class NetWorkUtils {

 /**
  * 检查网络是否可用
  * 
  * @param paramContext
  * @return
  */
 public static boolean checkEnable(Context paramContext) {
  boolean i = false;
  NetworkInfo localNetworkInfo = ((ConnectivityManager) paramContext
    .getSystemService("connectivity")).getActiveNetworkInfo();
  if ((localNetworkInfo != null) && (localNetworkInfo.isAvailable()))
   return true;
  return false;
 }

 /**
  * 将ip的整数形式转换成ip形式
  * 
  * @param ipInt
  * @return
  */
 public static String int2ip(int ipInt) {
  StringBuilder sb = new StringBuilder();
  sb.append(ipInt & 0xFF).append(".");
  sb.append((ipInt >> 8) & 0xFF).append(".");
  sb.append((ipInt >> 16) & 0xFF).append(".");
  sb.append((ipInt >> 24) & 0xFF);
  return sb.toString();
 }

 /**
  * 获取当前ip地址
  * 
  * @param context
  * @return
  */
 public static String getLocalIpAddress(Context context) {
  try {
   // for (Enumeration<NetworkInterface> en = NetworkInterface
   // .getNetworkInterfaces(); en.hasMoreElements();) {
   // NetworkInterface intf = en.nextElement();
   // for (Enumeration<InetAddress> enumIpAddr = intf
   // .getInetAddresses(); enumIpAddr.hasMoreElements();) {
   // InetAddress inetAddress = enumIpAddr.nextElement();
   // if (!inetAddress.isLoopbackAddress()) {
   // return inetAddress.getHostAddress().toString();
   // }
   // }
   // }
   WifiManager wifiManager = (WifiManager) context
     .getSystemService(Context.WIFI_SERVICE);
   WifiInfo wifiInfo = wifiManager.getConnectionInfo();
   int i = wifiInfo.getIpAddress();
   return int2ip(i);
  } catch (Exception ex) {
   return " 获取IP出错鸟!!!!请保证是WIFI,或者请重新打开网络!\n" + ex.getMessage();
  }
  // return null;
 }
}

// 得到本机ip地址
 public String getLocalHostIp()
 {
  String ipaddress = "";
  try
  {
   Enumeration<NetworkInterface> en = NetworkInterface
     .getNetworkInterfaces();
   // 遍历所用的网络接口
   while (en.hasMoreElements())
   {
    NetworkInterface nif = en.nextElement();// 得到每一个网络接口绑定的所有ip
    Enumeration<InetAddress> inet = nif.getInetAddresses();
    // 遍历每一个接口绑定的所有ip
    while (inet.hasMoreElements())
    {
     InetAddress ip = inet.nextElement();
     if (!ip.isLoopbackAddress()
       && InetAddressUtils.isIPv4Address(ip
         .getHostAddress()))
     {
      return ipaddress = "本机的ip是" + "：" + ip.getHostAddress();
     }
    }

   }
  }
  catch (SocketException e)
  {
   Log.e("feige", "获取本地ip地址失败");
   e.printStackTrace();
  }
  return ipaddress;

 }

 // 得到本机Mac地址
 public String getLocalMac()
 {
  String mac = "";
  // 获取wifi管理器
  WifiManager wifiMng = (WifiManager) getSystemService(Context.WIFI_SERVICE);
  WifiInfo wifiInfor = wifiMng.getConnectionInfo();
  mac = "本机的mac地址是：" + wifiInfor.getMacAddress();
  return mac;
 }

WifiManager wifimanage=(WifiManager)context.getSystemService(Context.WIFI_SERVICE);//获取WifiManager 
 
//检查wifi是否开启 
 
if(!wifimanage.isWifiEnabled()) { 
　　wifimanage.setWifiEnabled(true); 
} 
 
WifiInfo wifiinfo= wifimanage.getConnectionInfo(); 
String ip=intToIp(wifiinfo.getIpAddress()); 
 
//将获取的int转为真正的ip地址,参考的网上的，修改了下 
 
private String intToIp(int i) {
　　return (i & 0xFF)+ "." + ((i >> 8 ) & 0xFF)? + "." + ((i >> 16 ) & 0xFF) +"."+((i >> 24 ) & 0xFF );
}