How to get device IP in Dart/Flutter

I was searching for getting IP address in flutter for both the iOS and android platforms.

As answered by Feu and Günter Zöchbauer following works on only iOS platform

NetworkInterface.list(....);

this listing of network interfaces is not supported for android platform.

After too long search and struggling with possible solutions, for getting IP also on android device, I came across a flutter package called wifi, with this package we can get device IP address on both iOS and android platforms. Simple sample function to get device IP address

Future<InternetAddress> get selfIP async {
    String ip = await Wifi.ip;
    return InternetAddress(ip);
}

I have tested this on android using wifi and also from mobile network. And also tested on iOS device.

Though from name it looks only for wifi network, but it has also given me correct IP address on mobile data network [tested on 4G network].

#finally_this_works : I have almost given up searching for getting IP address on android and was thinking of implementing platform channel to fetch IP natively from java code for android platform [as interface list was working for iOS]. This wifi package saved the day and lots of headache.

I guess you mean the local IP of the currently connected Wifi network, right?

EDITED

In this answer, I used to suggest using the NetworkInterface in 'dart:io', however NetworkInterface.list is not supported in Android (as pointed out by Mahesh). The wifi package provides that, but later this was incorporated to the flutter's connectivity plugin. In Oct/2020 the methods for that were moved from the connectivity to the wifi_info_flutter plugin, and in 2021 that package was discontinued in favor of network_info_plus.

So just go for network_info_plus and call await NetworkInfo().getWifiIP().

---

By the way, you may also want to check if Wifi is available using the connectivity_plus plugin in flutter/plugins. Here's an example of how to check if wifi is available.