How can I get the ip address of my phone when it is connected under wifi?
I found a method here but it returns something like 24.182.239.255 even if I'm under wifi and I expect something like 192.168.1.10.
I'd like something like:
if (you are under wifi)
String ip4 = getWifiIP()
else
String ip4 = getIPAddress with the method linked before
Many thanks!
So something to consider is that Formatter.formatIpAddress(int) is being deprecated:
This method was deprecated in API level 12.
Use getHostAddress(), which supports both IPv4 and IPv6 addresses. This method does not support IPv6 addresses.
So using formatIpAddress(int) is likely not a good long term solution, although it will work.
Here is a potential solution if you are looking to absolutely on get the IP address for the WiFi interface:
protected String wifiIpAddress(Context context) {
WifiManager wifiManager = (WifiManager) context.getSystemService(WIFI_SERVICE);
int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
// Convert little-endian to big-endianif needed
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) {
Log.e("WIFIIP", "Unable to get host address.");
ipAddressString = null;
}
return ipAddressString;
}
As stated in previous responses, you need to set the following in your AndroidManifest.xml:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
Note that this is only an example solution. You should take time to check for null values and so on to make sure that the UX is smooth.
The irony is that on one hand Google is deprecating formatIpAddress(int), but still has getIpAddress() still returns an integer value. The IP address being an int also rules it out for being IPv6 compliant.
Next is the fact that endianness may or may not be an issue. I have only tested three devices and they have all been little-endian. It seems like endianness can vary depending on the hardware, even though we are running in VMs this can still be an issue. So to be on the safe side I added an endian check in the code.
getByAddress(byte[]) appears to want the integer value to be big endian. From researching this it appears that network byte order is big-endian. Makes sense since an address like 192.168.12.22 is a big-endian number.
Check out HammerNet GitHub project. It implements the code above along with a bunch of sanity checks, ability to handle defaults for AVDs, unit tests, and other things. I had to implement this for an app of mine and decided to open source the library.
If you would like to get the private IP address of your device when connected to Wi-Fi, you can try this.
WifiManager wifiMgr = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
int ip = wifiInfo.getIpAddress();
String ipAddress = Formatter.formatIpAddress(ip);
Be sure to add the permission
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
to your manifest.
This will get you the WiFi IPv4, IPv6 or both.
public static Enumeration<InetAddress> getWifiInetAddresses(final Context context) {
final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
final WifiInfo wifiInfo = wifiManager.getConnectionInfo();
final String macAddress = wifiInfo.getMacAddress();
final String[] macParts = macAddress.split(":");
final byte[] macBytes = new byte[macParts.length];
for (int i = 0; i< macParts.length; i++) {
macBytes[i] = (byte)Integer.parseInt(macParts[i], 16);
}
try {
final Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements()) {
final NetworkInterface networkInterface = e.nextElement();
if (Arrays.equals(networkInterface.getHardwareAddress(), macBytes)) {
return networkInterface.getInetAddresses();
}
}
} catch (SocketException e) {
Log.wtf("WIFIIP", "Unable to NetworkInterface.getNetworkInterfaces()");
}
return null;
}
#SuppressWarnings("unchecked")
public static<T extends InetAddress> T getWifiInetAddress(final Context context, final Class<T> inetClass) {
final Enumeration<InetAddress> e = getWifiInetAddresses(context);
while (e.hasMoreElements()) {
final InetAddress inetAddress = e.nextElement();
if (inetAddress.getClass() == inetClass) {
return (T)inetAddress;
}
}
return null;
}
Usage:
final Inet4Address inet4Address = getWifiInetAddress(context, Inet4Address.class);
final Inet6Address inet6Address = getWifiInetAddress(context, Inet6Address.class);
And don't forget:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
Found this nice answer, https://gist.github.com/stickupkid/1250733
WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
String ipString = String.format(“%d.%d.%d.%d”, (ip & 0xff), (ip >> 8 & 0xff), (ip >> 16 & 0xff), (ip >> 24 & 0xff));
Based on my crash logs, it appears not every device returns the WiFi mac address.
Here is a cleaner version of the most popular reply.
final WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
final ByteBuffer byteBuffer = ByteBuffer.allocate(4);
byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
byteBuffer.putInt(wifiInfo.getIpAddress());
try {
final InetAddress inetAddress = InetAddress.getByAddress(null, byteBuffer.array());
} catch (UnknownHostException e) {
//TODO: Return null?
}
If adb is installed in the terminal then do:
Runtime.getRuntime.exec("adb", "shell", "getprop", "dhcp.wlan0.ipaddress");
Add Following Permission.
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
WifiManager initialize in onCreate.
WifiManager wifiMgr = (WifiManager) getContext().getSystemService(context.WIFI_SERVICE);
Use following function.
public void WI-FI_IP() {
WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
int ip = wifiInfo.getIpAddress();
String ipAddress = Formatter.formatIpAddress(ip);
}
The following code is from AOSP Settings. It get the active link's ip, not matter wifi or mobile. It's the most common way.
http://androidxref.com/8.0.0_r4/xref/packages/apps/Settings/src/com/android/settings/deviceinfo/Status.java#251
/**
* Returns the default link's IP addresses, if any, taking into account IPv4 and IPv6 style
* addresses.
* #param context the application context
* #return the formatted and newline-separated IP addresses, or null if none.
*/
public static String getDefaultIpAddresses(ConnectivityManager cm) {
LinkProperties prop = cm.getActiveLinkProperties();
return formatIpAddresses(prop);
}
private static String formatIpAddresses(LinkProperties prop) {
if (prop == null) return null;
Iterator<InetAddress> iter = prop.getAllAddresses().iterator();
// If there are no entries, return null
if (!iter.hasNext()) return null;
// Concatenate all available addresses, comma separated
String addresses = "";
while (iter.hasNext()) {
addresses += iter.next().getHostAddress();
if (iter.hasNext()) addresses += "\n";
}
return addresses;
}
Formatter.formatIpAddress(int) is deprecated:
WifiManager wm = (WifiManager) getSystemService(WIFI_SERVICE);
String ipAddress = BigInteger.valueOf(wm.getDhcpInfo().netmask).toString();
Related
I have an Android application that works on a single phone. In order to work on a single device, I need to get the MAC address or Android ID. I decided to get the MAC address because the app needs to connect on a specified WiFi network.
How to get the MAC address from an Android device?
WifiManager manager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = manager.getConnectionInfo();
String address = info.getMacAddress();
Currently I'm using this but it is not stable.
When the app restarts, it returns 02:00:00:00:00:00. and crashes.
//getting mac address from mobile
private String getMacAddr() {
try {
List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
for (NetworkInterface nif : all) {
if (!nif.getName().equalsIgnoreCase("wlan0")) continue;
byte[] macBytes = nif.getHardwareAddress();
if (macBytes == null) {
return "";
}
StringBuilder res1 = new StringBuilder();
for (byte b : macBytes) {
// res1.append(Integer.toHexString(b & 0xFF) + ":");
res1.append(String.format("%02X:",b));
}
if (res1.length() > 0) {
res1.deleteCharAt(res1.length() - 1);
}
return res1.toString();
}
} catch (Exception ex) {
//handle exception
}
return "";
}
Use these permission in manifest
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
Get this method's return value to a String variable and use it.
String MAC = getMacAddr();
Hope I helped
Try this code
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wInfo = wifiManager.getConnectionInfo();
String macAddress = wInfo.getMacAddress();
Log.e(TAG,"MAC Address : " + macAddress);
Also, add below permission in your manifest file
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
and output is
MAC Address : 84:11:9E:B7:1E:D0
Using WifiManger, you will get MAC address
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
String macAddress = wifiInfo.getMacAddress();
Don't forget to add wifi permission
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
use this for Android ID
private String deviceId() {
return Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID);
}
I have update my mobile to Android Lollipop, before updating to Lollipop it works fine. Now I am facing problem with network interface.
if (isWifiConnected()) {
Log.d(TAG,"Wifi is connected");
mNetIf = Utils.getActiveNetworkInterface();
String name = mNetIf.getName();
Log.d(TAG, "network interface in constructor" + NetworkInterface.getByName(name));
//do some multicast Operations.
}
If the WiFi is connected I should do some multicast operation in WiFi.
iswifiConnected method
public boolean isWifiConnected(){
ConnectivityManager connManager = (ConnectivityManager)mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo mWifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
if (mWifi.isConnected()) {
return true;
}
return false;
}
Utils.getActiveNetworkInterface
public static NetworkInterface getActiveNetworkInterface() {
Enumeration<NetworkInterface> interfaces = null;
try {
interfaces = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
return null;
}
while (interfaces.hasMoreElements()) {
NetworkInterface iface = interfaces.nextElement();
Enumeration<InetAddress> inetAddresses = iface.getInetAddresses();
/* Check if we have a non-local address. If so, this is the active
* interface.
*
* This isn't a perfect heuristic: I have devices which this will
* still detect the wrong interface on, but it will handle the
* common cases of wifi-only and Ethernet-only.
*/
while (inetAddresses.hasMoreElements()) {
InetAddress addr = inetAddresses.nextElement();
if (!(addr.isLoopbackAddress() || addr.isLinkLocalAddress())) {
return iface;
}
}
}
return null;
}
Log
Wifi is connected
network interface in constructor**[rmnet0][3]t** [/fe80::32e3:daf0:ba51:f971%rmnet0%3][/27.57.104.11]//3g network interface
I am wondering how the app got 3g interface. It should get wlan interface, it work in all other mobile. Is it a bug?
Permissions:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
You are using the ConnectivityManger but, to use the WiFi network in Android, the best choice is to use the WifiManager: it has many features dedicated to Wifi. In particular, if you want to get a NetworkInterface object referencing the WiFi Interface, you can use the following method:
public static NetworkInterface getActiveWifiInterface(Context context) throws SocketException, UnknownHostException {
WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
//Return dynamic information about the current Wi-Fi connection, if any is active.
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
if(wifiInfo == null) return null;
InetAddress address = intToInet(wifiInfo.getIpAddress());
return NetworkInterface.getByInetAddress(address);
}
public static byte byteOfInt(int value, int which) {
int shift = which * 8;
return (byte)(value >> shift);
}
public static InetAddress intToInet(int value) {
byte[] bytes = new byte[4];
for(int i = 0; i<4; i++) {
bytes[i] = byteOfInt(value, i);
}
try {
return InetAddress.getByAddress(bytes);
} catch (UnknownHostException e) {
// This only happens if the byte array has a bad length
return null;
}
}
I think the problem is that getInetAddresses() returns a list of interfaces, and getActiveNetworkInterface is only returning the first one no matter what.
And so the interface you are getting depends on the order of the list which getInetAddresses() returns.
That being said, one of the solutions could be: look at the up interface, using isUp().
http://developer.android.com/reference/java/net/NetworkInterface.html#isUp()
Android would turn off the cellular connection to save power when connected to wifi networks, so by looking at only the UP interface, you should able to pin point the WiFi interface.
I want to obtain the ip address of the the wifi router to which my android phone is connected? I know that we can get the mac/BSSId and SSID by using the android APIS but I don't find the way to find the way to find the ip address of it?
I found the code for obtaining the ip address of phone owns wifi router
WifiManager myWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo myWifiInfo = myWifiManager.getConnectionInfo();
int ipAddress = myWifiInfo.getIpAddress();
System.out.println("WiFi address is " + android.text.format.Formatter.formatIpAddress(ipAddress))
but failed to get what I want
What you likely want is DhcpInfo:
final WifiManager manager = (WifiManager) super.getSystemService(WIFI_SERVICE);
final DhcpInfo dhcp = manager.getDhcpInfo();
final String address = Formatter.formatIpAddress(dhcp.gateway);
This will yield the (formatted) gateway IP address, which should be what you're looking for.
Since formatIpAddress is Deprecatted, here is the alternative :
public String getHotspotAdress(){
final WifiManager manager = (WifiManager)super.getSystemService(WIFI_SERVICE);
final DhcpInfo dhcp = manager.getDhcpInfo();
int ipAddress = dhcp.gateway;
ipAddress = (ByteOrder.nativeOrder().equals(ByteOrder.LITTLE_ENDIAN)) ?
Integer.reverseBytes(ipAddress) : ipAddress;
byte[] ipAddressByte = BigInteger.valueOf(ipAddress).toByteArray();
try {
InetAddress myAddr = InetAddress.getByAddress(ipAddressByte);
return myAddr.getHostAddress();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
Log.e("Wifi Class", "Error getting Hotspot IP address ", e);
}
return "null"
}
How can you find the IP address of the router (gateway address) from code?
WifiInfo.getIpAddress() - returns IP address of device.
In a shell command "ipconfig" does not return any value.
Here is my solution, but please let me know if there is a better way to do this:
WifiManager manager = (WifiManager)getSystemService(WIFI_SERVICE);
DhcpInfo info = manager.getDhcpInfo();
info.gateway;
Hey this might help you: DHCPInfo
final WifiManager manager = (WifiManager) super.getSystemService(WIFI_SERVICE);
final DhcpInfo dhcp = manager.getDhcpInfo();
final String address = Formatter.formatIpAddress(dhcp.gateway);
Add following rows to AndroidManifest.xml in order to access wifi functionalities:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
As the formatIpAddress is deprecated now you can use below code
byte[] myIPAddress = BigInteger.valueOf(manager.getIpAddress()).toByteArray();
ArrayUtils.reverse(myIPAddress);
InetAddress myInetIP = InetAddress.getByAddress(myIPAddress);
String myIP = myInetIP.getHostAddress();
I think the way you're doing it is the best (AFAIK), here's some example code from a Cordova plugin that does it the same way:
public class GetRouterIPAddress extends CordovaPlugin {
#Override
public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {
try {
String ip = getRouterIPAddress();
if (ip.equals("0.0.0.0")) {
callbackContext.error("No valid IP address");
return false;
}
callbackContext.success(ip);
return true;
} catch(Exception e) {
callbackContext.error("Error while retrieving the IP address. " + e.getMessage());
return false;
}
}
private String formatIP(int ip) {
return String.format(
"%d.%d.%d.%d",
(ip & 0xff),
(ip >> 8 & 0xff),
(ip >> 16 & 0xff),
(ip >> 24 & 0xff)
);
}
private String getRouterIPAddress() {
WifiManager wifiManager = (WifiManager) cordova.getActivity().getSystemService(Context.WIFI_SERVICE);
DhcpInfo dhcp = wifiManager.getDhcpInfo();
int ip = dhcp.gateway;
return formatIP(ip);
}
}
https://github.com/vallieres/cordova-plugin-get-router-ip-address/blob/master/src/android/GetRouterIPAddress.java
Try this:
$ busybox ip route show
It worked fine in my tablet with Terminal Emulator!
To get the IP address, try getInetAddress();
I need to determine if the Android device is connected to Wifi, and if so, obtain its Wifi IP address.
I know how to use ConnectivityManager to determine whether the active network is a Wifi network, and I know how to use java.net.NetworkInterface to iterate over the available network interfaces and get their IP addresses.
What I don't know how to do is determine which IP address belongs to the Wifi network, if there is more than one address found. Any advice?
Thanks.
public String getIpAddr() {
WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ip = wifiInfo.getIpAddress();
String ipString = String.format(
"%d.%d.%d.%d",
(ip & 0xff),
(ip >> 8 & 0xff),
(ip >> 16 & 0xff),
(ip >> 24 & 0xff));
return ipString;
}
Please Note: You need to add android.permission.INTERNET and android.permission.ACCESS_WIFI_STATE in your AndroidManifest.xml as <user-permission/> to access the code.
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
Please try this code.
ConnectivityManager connec = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
//To fetch the state of the Wi-Fi network in the device
Boolean isWifi = connec.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting();
WifiManager wifiMgr = (WifiManager) getBaseContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiMgr.getConnectionInfo();
//To fetch the name of the Wi-Fi network to which the device is connected
String wifiName = wifiInfo.getSSID();
static final int IP_ADDRESS_LENGTH = 32;
public static Integer getSystemWifiIpAddress(Context context)
{
WifiManager wManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
WifiInfo wInfo = wManager.getConnectionInfo();
int ipAddress = wInfo.getIpAddress();
if (ipAddress == 0)
return null;
return ipAddress;
}