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Get the IP address of a computer on an Android emulator using an Android code

I want to get the IP address of my computer in the Android emulator through the code .... or tell me that I get the IP address of all devices connected to the LAN in order to identify each of them uniquely ....... please help me solve this problem

Thanks in advance

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2 answers

The above functions are possible only by checking the arp cache, where the IP address will be added one by one, depending on how each is connected to the device. Use the code below and check. Just put the button with the correct name and call this method when clicked

    public void getClientList() {

    int macCount = 0;
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader("/proc/net/arp"));
        String line;
        while ((line = br.readLine()) != null) {
            String[] splitted = line.split(" +");

            if (splitted != null && splitted.length >= 4) {
                // Basic sanity check
                String mac = splitted[3];

                if (mac.matches("..:..:..:..:..:..")) {
                    macCount++;
                    ClientList.add("Client(" + macCount + ")");
                    IpAddr.add(splitted[0]);
                    HWAddr.add(splitted[3]);
                    Device.add(splitted[5]);
                    Toast.makeText(
                            getApplicationContext(),
                            "Mac_Count  " + macCount + "   MAC_ADDRESS  "
                                    + mac, Toast.LENGTH_SHORT).show();
                    for (int i = 0; i < splitted.length; i++)
                        System.out.println("Addressssssss     "
                                + splitted[i]);
                }
            }
        }
        // ClientList.remove(0);

    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        try {
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
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IP-

      HttpClient httpclient = new DefaultHttpClient();
      HttpGet httpget = new HttpGet("http://api.externalip.net/ip/"); 
      HttpResponse response = null;
      try 
      {
      response = httpclient.execute(httpget);
        } 
      catch (ClientProtocolException e)
      {
     e.printStackTrace();
        } 
      catch (IOException e)
      {
     e.printStackTrace();
        }
      Log.e("",""+response);
      HttpEntity entity = response.getEntity();
      if (entity != null) {
      long len = entity.getContentLength();
      if (len != -1 && len < 1024) 
      {
       try
       {
      str=EntityUtils.toString(entity);
       Log.e("",""+str);
        }
       catch (ParseException e)
       {            
    e.printStackTrace();
    } 
       catch (IOException e)
       {                
    e.printStackTrace();
    }
    } 
      }
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