Android - NetworkInterface vs WifiManager











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I am trying to show the ip address of of connected network(WiFi/Ethernet). I am confusing by two ip address. I can see two approaches. Get IP using WiFi info and Get IP using NetworkInterface. But I am getting two different IP's. Which one I need to use. Please let me know.



Using NetworkInterface:



private void getIpUsingNetworkInterface() {
String ipAddress = null;
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ipAddress = inetAddress.getHostAddress().toString();
}
}
}
Log.i("ipaddress==> ", "" + ipAddress);

Log.i("", "");
} catch (SocketException e) {
e.printStackTrace();
}
}


Using WifiManager:



private void getIPUsingWiFiManager() {
final WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
byte myIPAddress = BigInteger.valueOf(wifiInfo.getIpAddress()).toByteArray();
InetAddress myInetIP = InetAddress.getByAddress(reverseByte(myIPAddress));
String ipAddress = myInetIP.getHostAddress();
}


And also I can get IP address from DhcpInfo.



DhcpInfo dhcp = wifiManager.getDhcpInfo();
String ipAddress = dhcp.ipAddress;


Please let me know which is the best and correct way to get the IP address of connected network.










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  • Plot twist: a single network interface can have many IP addresses.
    – m0skit0
    Nov 19 at 12:27















up vote
0
down vote

favorite












I am trying to show the ip address of of connected network(WiFi/Ethernet). I am confusing by two ip address. I can see two approaches. Get IP using WiFi info and Get IP using NetworkInterface. But I am getting two different IP's. Which one I need to use. Please let me know.



Using NetworkInterface:



private void getIpUsingNetworkInterface() {
String ipAddress = null;
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ipAddress = inetAddress.getHostAddress().toString();
}
}
}
Log.i("ipaddress==> ", "" + ipAddress);

Log.i("", "");
} catch (SocketException e) {
e.printStackTrace();
}
}


Using WifiManager:



private void getIPUsingWiFiManager() {
final WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
byte myIPAddress = BigInteger.valueOf(wifiInfo.getIpAddress()).toByteArray();
InetAddress myInetIP = InetAddress.getByAddress(reverseByte(myIPAddress));
String ipAddress = myInetIP.getHostAddress();
}


And also I can get IP address from DhcpInfo.



DhcpInfo dhcp = wifiManager.getDhcpInfo();
String ipAddress = dhcp.ipAddress;


Please let me know which is the best and correct way to get the IP address of connected network.










share|improve this question






















  • Plot twist: a single network interface can have many IP addresses.
    – m0skit0
    Nov 19 at 12:27













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I am trying to show the ip address of of connected network(WiFi/Ethernet). I am confusing by two ip address. I can see two approaches. Get IP using WiFi info and Get IP using NetworkInterface. But I am getting two different IP's. Which one I need to use. Please let me know.



Using NetworkInterface:



private void getIpUsingNetworkInterface() {
String ipAddress = null;
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ipAddress = inetAddress.getHostAddress().toString();
}
}
}
Log.i("ipaddress==> ", "" + ipAddress);

Log.i("", "");
} catch (SocketException e) {
e.printStackTrace();
}
}


Using WifiManager:



private void getIPUsingWiFiManager() {
final WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
byte myIPAddress = BigInteger.valueOf(wifiInfo.getIpAddress()).toByteArray();
InetAddress myInetIP = InetAddress.getByAddress(reverseByte(myIPAddress));
String ipAddress = myInetIP.getHostAddress();
}


And also I can get IP address from DhcpInfo.



DhcpInfo dhcp = wifiManager.getDhcpInfo();
String ipAddress = dhcp.ipAddress;


Please let me know which is the best and correct way to get the IP address of connected network.










share|improve this question













I am trying to show the ip address of of connected network(WiFi/Ethernet). I am confusing by two ip address. I can see two approaches. Get IP using WiFi info and Get IP using NetworkInterface. But I am getting two different IP's. Which one I need to use. Please let me know.



Using NetworkInterface:



private void getIpUsingNetworkInterface() {
String ipAddress = null;
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements(); ) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements(); ) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
ipAddress = inetAddress.getHostAddress().toString();
}
}
}
Log.i("ipaddress==> ", "" + ipAddress);

Log.i("", "");
} catch (SocketException e) {
e.printStackTrace();
}
}


Using WifiManager:



private void getIPUsingWiFiManager() {
final WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
byte myIPAddress = BigInteger.valueOf(wifiInfo.getIpAddress()).toByteArray();
InetAddress myInetIP = InetAddress.getByAddress(reverseByte(myIPAddress));
String ipAddress = myInetIP.getHostAddress();
}


And also I can get IP address from DhcpInfo.



DhcpInfo dhcp = wifiManager.getDhcpInfo();
String ipAddress = dhcp.ipAddress;


Please let me know which is the best and correct way to get the IP address of connected network.







android






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asked Nov 19 at 12:24









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  • Plot twist: a single network interface can have many IP addresses.
    – m0skit0
    Nov 19 at 12:27


















  • Plot twist: a single network interface can have many IP addresses.
    – m0skit0
    Nov 19 at 12:27
















Plot twist: a single network interface can have many IP addresses.
– m0skit0
Nov 19 at 12:27




Plot twist: a single network interface can have many IP addresses.
– m0skit0
Nov 19 at 12:27

















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