Android get ip addresses

Android get public ip address programmatically

Hey, In this tutorial we are getting a mobile phone device IP address while the phone is connected to a mobile data connection or WiFi connection. This example demonstrates how do I get the IP address of android device programmatically.

Whenever you enable WiFi on your device and have an active connection to a WiFi network, your mobile data is temporarily disabled, Android Apps/Applications Mobile development this example demonstrates how do I get the IP address of an android device programmatically.

In this example, we will use Network Interface to get the IP address. So, before starting the code we need to know about NetworkInterface.

NetworkInterface

This class represents a Network Interface made up of a name, and a list of IP addresses assigned to this interface. It is used to identify the local interface on which a multicast group is joined. Interfaces are normally known by names such as «le0».

Public methods

Resource : Network Interface

boolean	equals(Object obj) Compares this object against the specified object.
static NetworkInterface	getByIndex(int index) Get a network interface given its index.
static NetworkInterface	getByInetAddress(InetAddress addr) Convenience method to search for a network interface that has the specified Internet Protocol (IP) address bound to it.
static NetworkInterface	getByName(String name) Searches for the network interface with the specified name.
String	getDisplayName() Get the display name of this network interface.
byte[]	getHardwareAddress() Returns the hardware address (usually MAC) of the interface if it has one and if it can be accessed given the current privileges.
int	getIndex() Returns the index of this network interface.
Enumeration	getInetAddresses() Convenience method to return an Enumeration with all or a subset of the InetAddresses bound to this network interface.
List	getInterfaceAddresses() Get a List of all or a subset of the InterfaceAddresses of this network interface.
int	getMTU() Returns the Maximum Transmission Unit (MTU) of this interface.
String	getName() Get the name of this network interface.
static Enumeration	getNetworkInterfaces() Returns all the interfaces on this machine.
NetworkInterface	getParent() Returns the parent NetworkInterface of this interface if this is a subinterface, or null if it is a physical (non-virtual) interface or has no parent.
Enumeration	getSubInterfaces() Get an Enumeration with all the subinterfaces (also known as virtual interfaces) attached to this network interface.
boolean	isLoopback() Returns whether a network interface is a loopback interface.
boolean	isPointToPoint() Returns whether a network interface is a point to point interface.
boolean	isUp() Returns whether a network interface is up and running.
boolean	isVirtual() Returns whether this interface is a virtual interface (also called subinterface).
boolean	supportsMulticast() Returns whether a network interface supports multicasting or not.

Get the IP address of android device programmatically

There are few steps to get an IP address of device.

Step 1

Create a new project in Android Studio, go to File -> New Project and fill all required details to create a new project.

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How To Find IP Address on Android (Router, Local, and Public IP Address)

I often mess around with network settings on my desktop and phone, and I can confirm IP address is the most important piece of information you’ll need for network configuration. There are different types of IP addresses — router, local, and public — and each one serves a different purpose. If you need to configure the network setting on your Android phone, you’ll need to know how to find IP address on Android.

In today’s post, I’ll tell you how to find the router, local, and public IP address on Android and what each type of IP address is used for.

Note: Before following the below instructions, make sure you are connected to a network (WiFi or mobile network).

How to find router IP address on Android

Router IP address (a.k.a gateway address) is used to access the router settings interface to configure the router settings. You just need to enter this address in your browser address bar and the router settings will open up (may require a password). Here’s how to find router IP address on Android:

1. Go to “Settings” and tap on “Wi-Fi” settings”.
2. Here tap and hold on your connected network and then select ”Manage network settings”.
3. Now check the checkbox next to “Show advanced options” and select “Static” under “IP settings”
4. You’ll find the router IP address under the “Gateway” section.

Important note: After finding the router IP address, make sure you tap the “Cancel” button instead of “Save”. You probably don’t want “IP settings” to be set to “Static”.

How to find local IP address on Android

Local IP address is used to identify different devices on the same network. The router automatically assigns a local IP address to every device that connects to it. This address can be used to identify each device on a network and connect them. For example, if you want to connect an app on your PC with your Android phone, then local IP address of at least one of the devices is needed.

Here’s how to find local IP address on your Android phone:

1. Go to “Settings” and tap on “About device” option at the very bottom.
2. Here tap on “Status” and you’ll find the local IP address listed under the “IP address” section.

There might be both IPv4 and IPv6 addresses listed. The one that looks like “192.168.x.x” is the IPv4 address, you should use this one.

Note: This method may not work on older Android phones. If that’s the case, then follow the above instructions I have provided to find router IP address and you’ll find local IP address right above the Gateway address.

How to find public IP address on Android

The public IP address (a.k.a global IP address) is revealed to the whole web to identify your device and send back information. For example, when you send a request to a web page, the public IP address is sent along with the request so the web page will know where it needs to send back the information. Here’s how Google explains it.

You probably need to know public IP address if you have to remotely access your device from a different place/network. Whatever the case may be, here’s how to find your public IP address on Android:

1. From your Android phone, open up the browser and type “what is my ip” in Google search. Google will automatically show your public IP address at the top.
2. Alternatively, you can also visit the website WhatIsMyIP.com to find your Android public IP address.

Tip: If you frequently need to check your public IP address (like if you use a VPN to access blocked content), then a dedicated app like What is my IP address would be helpful.

Ending thoughts

Both router and local IP address can be found right inside the phone settings, but for public IP address, you’ll have to get some help from a third-party service. Furthermore, the use of local and public IP address can be a little confusing. Just remember that local IP address is only needed when all the connected machines are on the same router. For everything else, use the public IP address.

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How to Get the IP Address of Android Device Programmatically

While developing application sometimes you may need the IP address of android device on which an application is installed. So in this tutorial, I am going to show how to get the IP address of an android device and display in TextView programmatically.

We can get the IP address of android device on which an app is installed with different ways and here I am going to show the best and easy method to get the IP address of app installed android device. To get IP address of android device (phone, tablet, tv, wear) using this method I have used WifiManager. So in this way you can get the IP address of any app running android device if there is WiFi network connected.

Android Example: Getting the IP Address of Android Device

Following example will give you the IP address of android device on which an app is installed.

XML Layout File

Following is the content of XML layout file where I have added a TextView to display the IP address of android device.

res/layout/android_device_ip_address.xml

Java Activity File

Following is the little bit java code of activity file.

src/GettingAndroidDeviceIPAddress.java

AndroidManifest.xml File

We are using Wifi Manager to get and display the IP address of android device so, don’t forget to add internet connection and wifi connection permission in your app manifest file.

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How to Get the IP Address of Android Device Programmatically

While developing application sometimes you may need the IP address of android device on which an application is installed. So in this tutorial, I am going to show how to get the IP address of an android device and display in TextView programmatically.

We can get the IP address of android device on which an app is installed with different ways and here I am going to show the best and easy method to get the IP address of app installed android device. To get IP address of android device (phone, tablet, tv, wear) using this method I have used WifiManager. So in this way you can get the IP address of any app running android device if there is WiFi network connected.

Android Example: Getting the IP Address of Android Device

Following example will give you the IP address of android device on which an app is installed.

XML Layout File

Following is the content of XML layout file where I have added a TextView to display the IP address of android device.

res/layout/android_device_ip_address.xml

Java Activity File

Following is the little bit java code of activity file.

src/GettingAndroidDeviceIPAddress.java

AndroidManifest.xml File

We are using Wifi Manager to get and display the IP address of android device so, don’t forget to add internet connection and wifi connection permission in your app manifest file.

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mathieugerard / LocalWifiIP.md

This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters

import android.net.wifi.WifiManager ;

import android.content.Context ;

import java.net.InetAddress ;

import java.nio.ByteOrder ;

private String getLocalWifiIpAddress() <

WifiManager wifiManager = ( WifiManager ) context . getSystemService( WIFI_SERVICE );

int ipAddress = wifiManager . getConnectionInfo() . getIpAddress();

if ( ByteOrder . nativeOrder() . equals( ByteOrder . LITTLE_ENDIAN )) <

ipAddress = Integer . reverseBytes(ipAddress);

>

byte [] ipByteArray = BigInteger . valueOf(ipAddress) . toByteArray();

String ipAddressString;

try <

ipAddressString = InetAddress . getByAddress(ipByteArray) . getHostAddress();

> catch ( UnknownHostException ex) <

ipAddressString = null ;

>

return ipAddressString;

>

This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters

# include ifaddrs.h >

# include arpa/inet.h >

— ( NSString *)getLocalWifiIpAddress <

NSString *address = @» error » ;

struct ifaddrs *interfaces = NULL ;

struct ifaddrs *temp_addr = NULL ;

int success = 0 ;

success = getifaddrs (&interfaces);

if (success == 0 ) <

temp_addr = interfaces;

while (temp_addr != NULL ) <

if (temp_addr-> ifa_addr -> sa_family == AF_INET) <

if ([[ NSString stringWithUTF8String: temp_addr->ifa_name] isEqualToString: @» en0 » ]) <

address = [ NSString stringWithUTF8String: inet_ntoa ((( struct sockaddr_in *)temp_addr->ifa_addr)->sin_addr)];

>

>

temp_addr = temp_addr-> ifa_next ;

>

>

// Free memory

freeifaddrs (interfaces);

return address;

>

Get Local Wifi IP address on iOS and Android

This Gist provide the function to retrieve the local IP address of the device when connected to the wifi.

No permission is required from the user to access the information. It uses the getifaddrs method that is not directly part of the public iOS API but it’s still perfectly fine to use it and allowed by Apple.

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