get Mac Address from /sys/class/net/eth0/address - Android Network

Android examples for Network:Mac Address

  1. HOME
  2. Android
  3. Network
  4. Mac Address

Description

get Mac Address from /sys/class/net/eth0/address

Demo Code


//package com.java2s;
import android.util.Log;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class Main {
    public static String getMacAddress() {
        try {/* www  .  ja va2  s .co  m*/

            String mac = loadFileAsString("/sys/class/net/eth0/address")
                    .toUpperCase().substring(0, 17);
            return mac.replace(":", "").toLowerCase();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    private static String loadFileAsString(String filePath)
            throws java.io.IOException {
        StringBuffer fileData = new StringBuffer(1000);
        BufferedReader reader = new BufferedReader(new FileReader(filePath));
        char[] buf = new char[1024];
        int numRead = 0;
        try {
            while ((numRead = reader.read(buf)) != -1) {
                String readData = String.valueOf(buf, 0, numRead);
                fileData.append(readData);
            }
            return fileData.toString();
        } finally {
            try {
                reader.close();
            } catch (Exception e) {
                Log.w("Failed to close reader,", e);
            }
        }
    }
}

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