Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;

import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import android.text.TextUtils;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Enumeration;

public class Main {
    public static String getWifiMac(Context context) {
        String macAddr;
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        macAddr = wifiInfo.getMacAddress();
        if (TextUtils.isEmpty(macAddr)) {
            NetworkInterface networkInterface = null;
            try {
                networkInterface = NetworkInterface.getByInetAddress(InetAddress.getByName(getIPAddr()));
                byte[] hardwareAddress = networkInterface.getHardwareAddress();
                macAddr = byte2hex(hardwareAddress);
            } catch (SocketException e) {
                e.printStackTrace();
            } catch (UnknownHostException e) {
                e.printStackTrace();
            }
        }
        return macAddr;
    }

    public static String getIPAddr() {
        try {
            Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
            while (networkInterfaces.hasMoreElements()) {

                NetworkInterface networkInterface = networkInterfaces.nextElement();
                Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
                while (inetAddresses.hasMoreElements()) {
                    InetAddress inetAddress = inetAddresses.nextElement();
                    return inetAddress.getHostAddress().toString();
                }
            }
        } catch (SocketException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String byte2hex(byte[] b) {
        StringBuffer hs = new StringBuffer(b.length);
        String stmp = "";
        int len = b.length;
        for (int n = 0; n < len; n++) {
            stmp = Integer.toHexString(b[n] & 0xFF);
            if (stmp.length() == 1)
                hs = hs.append("0").append(stmp);
            else {
                hs = hs.append(stmp);
            }
        }
        return String.valueOf(hs);
    }
}