(android) how to determine the ip address of connected devices in android hotspot

Question

i am writing an android app to control other devices if other devices is connected to my android phone's Wifi hotspot. However, i am unable to determine the ip address of the connected devices (say another android phone). Therefore, i am asking a way to determine the ip address of connected devices in my wifi hotspot. Thank you in advance

This page may help you to find your answer. http://android.stackexchange.com/questions/46649/how-to-get-the-information-of-users-connected-to-a-wi-fi-hotspot — Aravindan K, Dec 10 '14 at 17:32
But can i determine the ip in api method?? i would like to do it in automatically way — user3338304, Dec 10 '14 at 17:45
Try this code on the below link. http://stackoverflow.com/a/7049074/3847529 — Aravindan K, Dec 10 '14 at 17:52

score 1 · Answer 1 · answered Nov 13 '16 at 18:22

You can try this method for getting the list of devices connected to your hotspot. for pingCmd refer this

public ArrayList<String> getArpLiveIps(boolean onlyReachables) {
            BufferedReader bufRead = null;
            ArrayList<String> result = null;

            try {
                    result = new ArrayList<String>();
                    bufRead = new BufferedReader(new FileReader("/proc/net/arp"));
                    String fileLine;
                    while ((fileLine = bufRead.readLine()) != null) {


                            String[] splitted = fileLine.split(" +");

                              if ((splitted != null) && (splitted.length >= 4)) {

                                    String mac = splitted[3];
                                     if (mac.matches("..:..:..:..:..:..")) {
                                          boolean isReachable = pingCmd(splitted[0]);/**
 * Method to Ping  IP Address    
 * @return true if the IP address is reachable
 */
                                         if (!onlyReachables || isReachable) {
                                                    result.add(splitted[0]);
                                            }
                                    }
                            }
                    }
            } catch (Exception e) {

            } finally {
                    try {
                        bufRead.close();
                    } catch (IOException e) {

                    }
            }

            return result;
    }

score 0 · Answer 2 · answered Dec 10 '14 at 17:26

0

If your stock Android Hotspot app does not have this option. Use this app

https://play.google.com/store/apps/details?id=com.etustudio.android.hotspotmanager

answered Dec 10 '14 at 17:26

Mukul Shukla

123
2
12

score 0 · Answer 3 · edited May 23 '17 at 12:25

0

Unfortunately there is no official API for the hotspot, but you could use reflection, even though it might be difficult.

Also check out IP address of device using phone as access point

edited May 23 '17 at 12:25

Community

1
1

answered Dec 10 '14 at 17:30

manniL

7,157
7
46
72

Yes, i am looking for an api to perform the job done – user3338304 Dec 10 '14 at 17:46
Thanks for your reply, i actually try this post before but not work – user3338304 Dec 10 '14 at 17:59
Your're welcome ;) But as mentioned, there is no official API. You'll need a lot of effort to build your own if you want so. – manniL Dec 10 '14 at 18:27

(android) how to determine the ip address of connected devices in android hotspot

3 Answers3