get MAC Address - Android Phone

Android examples for Phone:Network

  1. HOME
  2. Android
  3. Phone
  4. Network

Description

get MAC Address

Demo Code


import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
import java.util.List;
import android.app.ActivityManager;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.NetworkInfo.State;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.provider.Settings.Secure;

public class Main{
    /*  ww  w.  j a  v a  2s.c om*/
    public static String getMACAddress(Context context) {
        if (mac != null && mac.length() > 0) {
            return mac;
        }
        if (context == null) {
            return "";
        }
        else {
            ConnectivityManager conMan = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            State wifi_state = conMan.getNetworkInfo(
                    ConnectivityManager.TYPE_WIFI).getState();
            NetworkInfo networkInfo = conMan
                    .getNetworkInfo(ConnectivityManager.TYPE_ETHERNET);
            State net_state = State.DISCONNECTED;
            if (networkInfo != null) {
                net_state = networkInfo.getState();
            }

            if (wifi_state == State.CONNECTED) {
                WifiManager wifi = (WifiManager) context
                        .getSystemService(Context.WIFI_SERVICE);
                WifiInfo info = wifi.getConnectionInfo();
                mac = info.getMacAddress();
            } else if (net_state == State.CONNECTED) {
                mac = getEthernetNetworkMACAddress();
            }
        }
        return mac;
    }
    
    public static String getEthernetNetworkMACAddress() {
        NetworkInterface NIC;
        StringBuffer mac = new StringBuffer();
        try {
            NIC = NetworkInterface.getByName("eth0");
            byte[] buf = NIC.getHardwareAddress();
            for (int i = 0; i < buf.length; i++) {
                String hex = Integer.toHexString(buf[i] & 0xFF);
                if (hex.length() == 1) {
                    mac.append("0" + hex);
                } else {
                    mac.append(hex);
                }
            }
            Log.e("DeviceUtil", "mac = " + mac.toString());
        } catch (SocketException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return mac.toString();
    }
}

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