Android获取用户ip地址

Posted 2023-02-14 wodongx123

public class NetManager 

    /**
     * 获取用户IP地址<br/>
     * 注意：需要在androidManifest.xml中声明下面三个权限才能正常使用该方法，否则会空指针异常
     * <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     * <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     * <uses-permission android:name="android.permission.INTERNET"/>
     */
    public static String getIpAddress(Context context) 
        if (context == null) 
            return "";
        

        ConnectivityManager conMann = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mobileNetworkInfo = conMann.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        NetworkInfo wifiNetworkInfo = conMann.getNetworkInfo(ConnectivityManager.TYPE_WIFI);

        if (mobileNetworkInfo.isConnected()) 
            return getLocalIpAddress();
         else if (wifiNetworkInfo.isConnected()) 
            return getWifiAddress(context);
        
        return "";
    

    private static String getLocalIpAddress() 
        try 
            ArrayList<NetworkInterface> nilist = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface ni : nilist) 
                ArrayList<InetAddress> ialist = Collections.list(ni.getInetAddresses());
                for (InetAddress address : ialist) 
                    if (!address.isLoopbackAddress() && address instanceof Inet4Address) 
                        return address.getHostAddress();
                    
                
            
         catch (SocketException e) 
            e.printStackTrace();
        
        return "";
    

    private static String getWifiAddress(Context context) 
        if (context == null) 
            return "";
        
        WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        int ipAddress = wifiInfo.getIpAddress();
        return intToIp(ipAddress);
    

    private static String intToIp(int ipInt) 
        String s = (ipInt & 0xFF) + "." +
                ((ipInt >> 8) & 0xFF) + "." +
                ((ipInt >> 16) & 0xFF) + "." +
                ((ipInt >> 24) & 0xFF);
        return s;
    

经过实测，并不能真的获取到网络上实际的外网IP地址，只能拿到他下面的内网IP地址，凑合着用吧

参考来源：https://blog.csdn.net/sinat_16458039/article/details/50260589