Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;

import android.net.DhcpInfo;
import android.net.wifi.WifiManager;

import java.io.IOException;

import java.net.InetAddress;

public class Main {
    /**
     * Returns the wi-fi broadcast address
     *
     * @param context the app context
     * @return returns an the broadcast address
     * @throws IOException
     */
    public static InetAddress getBroadcastAddress(Context context) throws IOException {
        WifiManager wifi = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        DhcpInfo dhcp = wifi.getDhcpInfo();
        // handle null somehow

        int broadcast = (dhcp.ipAddress & dhcp.netmask) | ~dhcp.netmask;
        byte[] quads = new byte[4];
        for (int k = 0; k < 4; k++)
            quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);
        return InetAddress.getByAddress(quads);
    }
}