get Broadcast Ip - Android android.net.wifi

Android examples for android.net.wifi:WifiInfo

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Description

get Broadcast Ip

Demo Code

import java.net.InetAddress;
import java.net.UnknownHostException;

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

public class Main {

  public static WifiManager localWifiManager;

  private static InetAddress getBroadcastIp() {
    // Function to return the broadcast address, based on the IP address of the
    // device/*  w  w w .  jav a2s.co m*/
    try {
      WifiInfo wifiInfo = localWifiManager.getConnectionInfo();
      int ipAddress = wifiInfo.getIpAddress();
      String addressString = toBroadcastIp(ipAddress);
      InetAddress broadcastAddress = InetAddress.getByName(addressString);
      return broadcastAddress;
    } catch (UnknownHostException e) {

      return null;
    }

  }

  private static String toBroadcastIp(int ip) {
    // Returns converts an IP address in int format to a formatted string
    return (ip & 0xFF) + "." + ((ip >> 8) & 0xFF) + "." + ((ip >> 16) & 0xFF) + "." + "255";
  }

}

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