Android How to - Get Wiki IP Address

Question

We would like to know how to get Wiki IP Address.
Answer

//from  ww  w .  ja v a  2 s. co m
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

import android.net.wifi.WifiManager;

class IPAddressUtil {
  public static final boolean ANDROID_EMULATOR;
  static {
    boolean foundEmulator = false;
    try {
      Class androidBuild = Thread.currentThread().getContextClassLoader()
          .loadClass("android.os.Build");
      String product = (String) androidBuild.getField("PRODUCT").get(null);
      if ("google_sdk".equals(product) || ("sdk".equals(product)))
        foundEmulator = true;
    } catch (Exception ex) {
      // empty
    }
    ANDROID_EMULATOR = foundEmulator;
  }

  public static InetAddress getWifiIPAddress(WifiManager wifiManager) {

    Enumeration<NetworkInterface> interfaces;
    try {
      interfaces = NetworkInterface.getNetworkInterfaces();
    } catch (SocketException e) {
      return null;
    }

    int wifiIP = wifiManager.getConnectionInfo().getIpAddress();
    int reverseWifiIP = Integer.reverseBytes(wifiIP);

    while (interfaces.hasMoreElements()) {
      NetworkInterface networkInterface = interfaces.nextElement();
      Enumeration<InetAddress> availableLocalAddresses = networkInterface
          .getInetAddresses();
      while (availableLocalAddresses.hasMoreElements()) {
        InetAddress inetAddress = availableLocalAddresses.nextElement();
        int currentAddressByteArray = byteArrayToInt(inetAddress.getAddress(),
            0);
        if ((currentAddressByteArray == wifiIP)
            || (currentAddressByteArray == reverseWifiIP)) {
          return inetAddress;
        }
      }
    }
    return null;
  }

  public static int byteArrayToInt(byte[] arr, int offset) {
    if (arr == null || arr.length - offset < 4)
      return -1;

    int r0 = (arr[offset] & 0xFF) << 24;
    int r1 = (arr[offset + 1] & 0xFF) << 16;
    int r2 = (arr[offset + 2] & 0xFF) << 8;
    int r3 = arr[offset + 3] & 0xFF;
    return r0 + r1 + r2 + r3;
  }

}