I want to retrieve publick IP Address, the address that we get for example from whatismyipaddress.com and I don't want to use any third party servcie https://www.ipify.org. Is there any way to fetch this IP address from inbuilt classes or library in Android.
If not possible to get the required data from Android libraries, please suggest any logic to get the same in server level instead of fetching in client level. Note: Loadbalancer is present before routing to actual web-application
I use this method in my project.. so you can use it.. It will return you device IP
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += inetAddress.getHostAddress();
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
If you want to get Public IP of Network that your device connected with use this code...
public class GetPublicIP extends AsyncTask<String, String, String>{
@Override
protected String doInBackground(String... strings) {
String publicIP = "";
try {
java.util.Scanner s = new java.util.Scanner(
new java.net.URL(
"https://api.ipify.org")
.openStream(), "UTF-8")
.useDelimiter("\\A");
publicIP = s.next();
System.out.println("My current IP address is " + publicIP);
} catch (java.io.IOException e) {
e.printStackTrace();
}
return publicIP;
}
@Override
protected void onPostExecute(String publicIp) {
super.onPostExecute(publicIp);
Log.e("PublicIP", publicIp+"");
//Here 'publicIp' is your desire public IP
}
}
new execute it
new GetPublicIP().execute();
With kotlin and Coroutines,
private suspend fun getMyPublicIpAsync() : Deferred<String> =
coroutineScope {
async(Dispatchers.IO) {
var result = ""
result = try {
val url = URL("https://api.ipify.org")
val httpsURLConnection = url.openConnection()
val iStream = httpsURLConnection.getInputStream()
val buff = ByteArray(1024)
val read = iStream.read(buff)
String(buff,0, read)
} catch (e: Exception) {
"error : $e"
}
return@async result
}
}
private fun myFunction() {
CoroutineScope(Dispatchers.Main).launch {
val myPublicIp = getMyPublicIpAsync().await()
Toast.makeText(this@MainActivity, myPublicIp, Toast.LENGTH_LONG).show()
}
}
Use this method in order to get your IpAddress
public static String getIPAddress(boolean useIPv4) {
try {
List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface intf : interfaces) {
List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
for (InetAddress addr : addrs) {
if (!addr.isLoopbackAddress()) {
String sAddr = addr.getHostAddress();
boolean isIPv4 = sAddr.indexOf(':')<0;
if (useIPv4) {
if (isIPv4)
return sAddr;
} else {
if (!isIPv4) {
int delim = sAddr.indexOf('%');
return delim<0 ? sAddr.toUpperCase() : sAddr.substring(0, delim).toUpperCase();
}
}
}
}
}
} catch (Exception ignored) { }
return "";
}
Get Public IP Address with Kotlin in Android
var ip: String? = null
val thread = Thread {
try {
val url = URL("https://api.ipify.org")
val connection = url.openConnection()
connection.setRequestProperty("User-Agent", "Mozilla/5.0") // Set a User-Agent to avoid HTTP 403 Forbidden error
val inputStream = connection.getInputStream()
val s = java.util.Scanner(inputStream, "UTF-8").useDelimiter("\\A")
ip = s.next()
inputStream.close()
} catch (e: Exception) {
e.printStackTrace()
}
}
thread.start()
Get Public IP Address with Java in Android
String ip;
Thread thread = new Thread(() -> {
try {
URL url = new URL("https://api.ipify.org");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestProperty("User-Agent", "Mozilla/5.0"); // Set a User-Agent to avoid HTTP 403 Forbidden error
try (Scanner s = new Scanner(connection.getInputStream(), "UTF-8").useDelimiter("\\A")) {
ip = s.next();
}
connection.disconnect();
} catch (Exception e) {
e.printStackTrace();
}
});
thread.start();
I have explained each line on my medium post Android — Get Public IP Address with Java & Kotlin, if anyone interested can read from there.
