如何在程序中获取Android设备的公网IP地址？

Question

如何在程序中获取Android设备的公网IP地址？

androidip-address

7

我想要获取公共IP地址，就像从whatismyipaddress.com获取的那样，而且我不想使用第三方服务https://www.ipify.org。有没有办法从Android内置的类或库中获取此IP地址。

如果无法从Android库中获取所需数据，请建议在服务器级别获取相同数据的逻辑，而不是在客户端级别获取。注意：负载均衡器存在于路由到实际Web应用程序之前。

- Mahesh

2

这回答您的问题吗？如何通过编程获取公共IP地址？ - Md. Asaduzzaman

还有这个：如何从代码中获取设备的IP地址？ - Md. Asaduzzaman

谢谢提供的信息，我已经查看了这些链接，但是我正在寻找不使用任何外部网络服务的逻辑。 - Mahesh

4个回答

4

使用Kotlin和协程，

private suspend fun getMyPublicIpAsync() : Deferred<String> =
        coroutineScope {
            async(Dispatchers.IO) {
                var result = ""
                result = try {
                    val url = URL("https://api.ipify.org")
                    val httpsURLConnection = url.openConnection()
                    val iStream = httpsURLConnection.getInputStream()
                    val buff = ByteArray(1024)
                    val read = iStream.read(buff)
                    String(buff,0, read)
                } catch (e: Exception) {
                    "error : $e"
                }
                return@async result
            }
        }


private fun myFunction() {
   CoroutineScope(Dispatchers.Main).launch {
      val myPublicIp = getMyPublicIpAsync().await()
      Toast.makeText(this@MainActivity, myPublicIp, Toast.LENGTH_LONG).show()
   }
}

- Chandresh 204

1

使用此方法以获取您的Ip地址。

public static String getIPAddress(boolean useIPv4) {
        try {
            List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
            for (NetworkInterface intf : interfaces) {
                List<InetAddress> addrs = Collections.list(intf.getInetAddresses());
                for (InetAddress addr : addrs) {
                    if (!addr.isLoopbackAddress()) {
                        String sAddr = addr.getHostAddress();

                        boolean isIPv4 = sAddr.indexOf(':')<0;

                        if (useIPv4) {
                            if (isIPv4) 
                                return sAddr;
                        } else {
                            if (!isIPv4) {
                                int delim = sAddr.indexOf('%'); 
                                return delim<0 ? sAddr.toUpperCase() : sAddr.substring(0, delim).toUpperCase();
                            }
                        }
                    }
                }
            }
        } catch (Exception ignored) { } 
        return "";
    }

- Ajeett

1

谢谢您的建议，建议的逻辑返回的是私有IP地址，类似于192.168.*.*。但我正在寻找公共IP地址。 - Mahesh

@Mahesh 这里有一个完美的解决方案 https://medium.com/@ISKFaisal/android-get-public-ip-address-with-java-kotlin-4d0575d2847 - Faisal Shaikh

0

使用Kotlin在Android中获取公共IP地址

var ip: String? = null
val thread = Thread {
    try {
        val url = URL("https://api.ipify.org")
        val connection = url.openConnection()
        connection.setRequestProperty("User-Agent", "Mozilla/5.0") // Set a User-Agent to avoid HTTP 403 Forbidden error
        val inputStream = connection.getInputStream()
        val s = java.util.Scanner(inputStream, "UTF-8").useDelimiter("\\A")
        ip = s.next()
        inputStream.close()
    } catch (e: Exception) {
        e.printStackTrace()
    }
}
thread.start()

使用Java在Android中获取公共IP地址

String ip;
Thread thread = new Thread(() -> {
    try {
        URL url = new URL("https://api.ipify.org");
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestProperty("User-Agent", "Mozilla/5.0"); // Set a User-Agent to avoid HTTP 403 Forbidden error

        try (Scanner s = new Scanner(connection.getInputStream(), "UTF-8").useDelimiter("\\A")) {
            ip = s.next();
        }

        connection.disconnect();
    } catch (Exception e) {
        e.printStackTrace();
    }
});
thread.start();

我在我的Medium帖子Android — 使用Java和Kotlin获取公共IP地址中解释了每一行代码，有兴趣的人可以从那里阅读。

- Faisal Shaikh

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Md. Enamul Haque · Accepted Answer

我在我的项目中使用这种方法，所以你也可以使用它。它将返回您的设备IP地址。

private String getIpAddress() {
    String ip = "";
    try {
        Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
                .getNetworkInterfaces();
        while (enumNetworkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = enumNetworkInterfaces
                    .nextElement();
            Enumeration<InetAddress> enumInetAddress = networkInterface
                    .getInetAddresses();
            while (enumInetAddress.hasMoreElements()) {
                InetAddress inetAddress = enumInetAddress.nextElement();

                if (inetAddress.isSiteLocalAddress()) {
                    ip += inetAddress.getHostAddress();
                }

            }

        }

    } catch (SocketException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
        ip += "Something Wrong! " + e.toString() + "\n";
    }

    return ip;
}

如果您想获取您的设备连接的网络的公共IP，请使用以下代码...

public class GetPublicIP extends AsyncTask<String, String, String>{

    @Override
    protected String doInBackground(String... strings) {
        String publicIP = "";
        try  {
            java.util.Scanner s = new java.util.Scanner(
                    new java.net.URL(
                            "https://api.ipify.org")
                            .openStream(), "UTF-8")
                    .useDelimiter("\\A");
            publicIP = s.next();
            System.out.println("My current IP address is " + publicIP);
        } catch (java.io.IOException e) {
            e.printStackTrace();
        }

        return publicIP;
    }

    @Override
    protected void onPostExecute(String publicIp) {
        super.onPostExecute(publicIp);

        Log.e("PublicIP", publicIp+"");
        //Here 'publicIp' is your desire public IP
    }
}

新执行它

new GetPublicIP().execute();