Flutter:在Android上获取本地IP地址

Question

如何在Flutter中获取我的(Android(设备的本地IP地址？这应该是

• 连接到WIFI时，路由器通过DHCP分配的本地IP地址
• 如果连接到VPN，则由我的VPN服务器分配的VPN网络中的本地IP地址(而不是VPN服务器本身的全局IP地址(
• 通过蜂窝网络连接时的全局IP

Answer 1

我现在这样解决了它，但如果你有更好的解决方案，那将是令人高兴的：

static Future<String> getLocalIpAddress() async {
final interfaces = await NetworkInterface.list(type: InternetAddressType.IPv4, includeLinkLocal: true);
try {
// Try VPN connection first
NetworkInterface vpnInterface = interfaces.firstWhere((element) => element.name == "tun0");
return vpnInterface.addresses.first.address;
} on StateError {
// Try wlan connection next
try {
NetworkInterface interface = interfaces.firstWhere((element) => element.name == "wlan0");
return interface.addresses.first.address;
} catch (ex) {
// Try any other connection next
try {
NetworkInterface interface = interfaces.firstWhere((element) => !(element.name == "tun0" || element.name == "wlan0"));
return interface.addresses.first.address;
} catch (ex) {
return null;
}
}
}
}