Get Current Device Ip.

Utils.java

package com.sadieyu.androidsocketclient;

import org.apache.http.conn.util.InetAddressUtils;

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Collections;
import java.util.List;

/**
 * Created by sadieyu on 14-6-12.
 */
public class Utils {
	/**
	 * Get IP address from first non-localhost interface
	 * @param ipv4  true=return ipv4, false=return ipv6
	 * @return  address or empty string
	 */
	public static String getIPAddress(boolean useIPv4) {
		try {
			List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
			for (NetworkInterface intf : interfaces) {
				List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
				for (InetAddress addr : addrs) {
					if (!addr.isLoopbackAddress()) {
						String sAddr = addr.getHostAddress().toUpperCase();
						boolean isIPv4 = InetAddressUtils.isIPv4Address(sAddr);
						if (useIPv4) {
							if (isIPv4)
								return sAddr;
						} else {
							if (!isIPv4) {
								int delim = sAddr.indexOf('%'); // drop ip6 port suffix
								return delim<0 ? sAddr : sAddr.substring(0, delim);
							}
						}
					}
				}
			}
		} catch (Exception ex) { } // for now eat exceptions
		return "";
	}

}