Getting My LAN ip address (192.168.xxxx) (IPV4)

Question

In my android device I am trying to find its IP address(IPV4).
If I do the following code

InetAddress inet = InetAddress.getLocalHost();
System.out.println(inet.getHostAddress()); //giving me 127.0.0.1

The code is giving me 127.0.0.1.
I wanted to get the actual IP 198.168.xx.xx.

(In My pc the same code giving me the actual IP though.)

Solution 1

public static String getIpAddress() { 
            try {
                for (Enumeration en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
                    NetworkInterface intf = en.nextElement();
                    for (Enumeration enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                        InetAddress inetAddress = enumIpAddr.nextElement();
                        if (!inetAddress.isLoopbackAddress()&&inetAddress instanceof Inet4Address) {
                            String ipAddress=inetAddress.getHostAddress().toString();
                            Log.e("IP address",""+ipAddress);
                            return ipAddress;
                        }
                    }
                }
            } catch (SocketException ex) {
                Log.e("Socket exception in GetIP Address of Utilities", ex.toString());
            }
            return null; 
    }

Give permissions

Also add in mainfest.

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

Solution 2

You can use this to get your IP address.

WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
return String.format("%d.%d.%d.%d", (ipAddress & 0xff), (ipAddress >> 8 & 0xff),
        (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));

This returns it as a String in the form "X.X.X.X"

The only permission you need in your manifest.xml is

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

Comments

[Vishnudev K]

thanks for quick reply. I am getting "fe80::2064:32ff:fe5d:2edf%p2p0" as my address. Is it ipv6 address. how to get ipv4 address?

[Srikant Sahay]

+1 for checking all the interfaces. This will take care of both wifi and cellular interfaces

[Ayush]

@VishnudevK Thats because ur router is configured for ipv6 Address.

[SJuan76]

And if he is not using WiFi?

[Vishnudev K]

@Ayush but in phone's status its showing the ipv4 address only. is there any way to convert it to ipv4.

[Ken Wolf]

What's an example of a device that doesn't use wifi to get an internal LAN address? 198.168.xx.xx. Ethernet port?

[Ayush]

@VishnudevK ipv4 and ipv6 Both are Different thing, they CANT BE CONVERTED.

[Vishnudev K]

@ayush got it. see the change I made

[Ayush]

@VishnudevK I have edited the question since the answer is for IPV4 only.

[SJuan76]

As often, I concentrate in the body of the question and miss data from the header (it is the only place where the LAN part is informed). And yes, an ethernet port is possible (though I agree that it is not that frequent nowadays).

[Ken Wolf]

:) np I understand. In my experience the code I posted works very well in production on Android devices to do exactly what the user asked.