Android obtains the IP address of the device.

Android obtains the IP address of the device.

Overall retrieval: You can use mobile data to access the Internet and obtain IP addresses. You can also use WiFi to obtain IP addresses.

public static String getPhoneIp() {     try {         for (Enumeration
 
   en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {             NetworkInterface intf = en.nextElement();             for (Enumeration
  
    enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {                 InetAddress inetAddress = enumIpAddr.nextElement();                 if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {                     // if (!inetAddress.isLoopbackAddress() && inetAddress                     // instanceof Inet6Address) {                     return inetAddress.getHostAddress().toString();                 }             }         }     } catch (Exception e) {     }     return "127.0.0.1"; }
  
 

How to obtain IP addresses through Wifi

Private String intToIp (int ip) {return (ip & 0xFF) + ". "+ (ip> 8) & 0xFF) + ". "+ (ip> 16) & 0xFF) + ". "+ (ip> 24) & 0xFF);} private String getIp () {// get wifi service WifiManager wifiManager = (WifiManager) getSystemService (Context. WIFI_SERVICE); // determines whether wifi is enabled if (wifiManager. isWifiEnabled () {// wifiManager. setWifiEnabled (true); WifiInfo wifiInfo = wifiManager. getConnectionInfo (); int ipAddress = wifiInfo. getIpAddress (); return intToIp (ipAddress);} return "127.0.0.1 ";}