Android获取设备IP地址的示例代码

package com.daniulive.smartpublisher;

import android.content.Context;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

public class IPAddrUtils {

    /**
     * 获取本机IPv4地址
     *
     * @param context
     * @return 本机IPv4地址；null：无网络连接
     */
    public static String getIpAddress(Context context) {
        if (null == context)
            return getIpAddress();

        // 获取WiFi服务
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        // 判断WiFi是否开启
        if (wifiManager.isWifiEnabled()) {
            // 已经开启了WiFi
            WifiInfo wifiInfo = wifiManager.getConnectionInfo();
            int ipAddress = wifiInfo.getIpAddress();
            String ip = intToIp(ipAddress);
            return ip;
        } else {
            // 未开启WiFi
            return getIpAddress();
        }
    }

    private static String intToIp(int ipAddress) {
        return (ipAddress & 0xFF) + "." +
                ((ipAddress >> 8) & 0xFF) + "." +
                ((ipAddress >> 16) & 0xFF) + "." +
                (ipAddress >> 24 & 0xFF);
    }

    /**
     * 获取本机IPv4地址
     *
     * @return 本机IPv4地址；null：无网络连接
     */
    public static String getIpAddress() {
        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()
                            && !inetAddress.isAnyLocalAddress()
                            && inetAddress instanceof Inet4Address) {
                        return inetAddress.getHostAddress();
                    }
                }
            }
        } catch (Exception e) {
        }

        return null;
    }
}

String local_ip_addr = IPAddrUtils.getIpAddress(context_);
Log.i(TAG, "initGB28181Agent local ip addr: " + local_ip_addr);

private fun checkCurrentNetworkType() {
    val connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
    connectivityManager.run {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            when (activeNetworkInfo?.type) {
                ConnectivityManager.TYPE_MOBILE -> {
                    // 通过手机流量
                }
                ConnectivityManager.TYPE_WIFI -> {
                    // 通过WIFI
                }
                else -> {}
            }
        } else {
            // Android M 以上建议使用getNetworkCapabilities API
            activeNetwork?.let { network ->
                getNetworkCapabilities(network)?.let { networkCapabilities ->
                    if (networkCapabilities.hasCapability(NetworkCapabilities.NET_CAPABILITY_VALIDATED)) {
                        when {
                            networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) -> {
                                // 通过手机流量
                            }
                            networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) -> {
                                // 通过WIFI
                            }
                        }
                    }
                }
            }
        }
    }
}

NetworkInterface.getNetworkInterfaces().let {
    loo@ for (networkInterface in Collections.list(it)) {
        for (inetAddresses in Collections.list(networkInterface.inetAddresses)) {
            if (!inetAddresses.isLoopbackAddress && !inetAddresses.isLinkLocalAddress) {
                // IP地址
                val mobileIp = inetAddresses.hostAddress
                break@loo
            }
        }
    }
}

private fun getWIFIIp() {
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
        val wifiManager = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager
        // IP 地址
        val wifiIp = Formatter.formatIpAddress(wifiManager.connectionInfo.ipAddress)
    } else {
        // Android Q 以上建议使用getNetworkCapabilities API
        val connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
        connectivityManager.run {
            activeNetwork?.let { network ->
                (getNetworkCapabilities(network)?.transportInfo as? WifiInfo)?.let { wifiInfo ->
                    // IP 地址
                    val wifiIp = Formatter.formatIpAddress(wifiInfo.ipAddress)
                }
            }
        }
    }
}