获取iPhone或iPad设备的IP地址使用Swift 3

如何获取设备的IP地址，而不使用任何使用Swift 3编程语言的第三方库。 其实我已经使用下面的代码，以获得IP地址。

func getIPAddress() -> String? { var address : String? var ifaddr : UnsafeMutablePointer<ifaddrs> = nil if getifaddrs(&ifaddr) == 0 { var ptr = ifaddr while ptr != nil { defer { ptr = ptr.memory.ifa_next } let interface = ptr.memory let addrFamily = interface.ifa_addr.memory.sa_family if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) { if let name = String.fromCString(interface.ifa_name) where name == "en0" { var hostname = [CChar](count: Int(NI_MAXHOST), repeatedValue: 0) getnameinfo(interface.ifa_addr, socklen_t(interface.ifa_addr.memory.sa_len), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) address = String.fromCString(hostname) } } } freeifaddrs(ifaddr) } return address 

}

但UnsafeMutablePointer语法不起作用。 它通过语法错误。 我需要导入任何框架试图帮助我。

Answer 1

在桥接头中添加#include<ifaddrs.h> 。

这是获取IP地址所需的框架。

你也可以参考下面的链接：

Swift – 获取设备的IP地址

Answer 2

试试这个（ 没有桥接头是必要的，它在Playground中起作用 ）

 //: Playground - noun: a place where people can play import Darwin var temp = [CChar](repeating: 0, count: 255) enum SocketType: Int32 { case SOCK_STREAM = 0, SOCK_DGRAM, SOCK_RAW } // host name gethostname(&temp, temp.count) // create addrinfo based on hints // if host name is nil or "" we can connect on localhost // if host name is specified ( like "computer.domain" ... "My-MacBook.local" ) // than localhost is not aviable. // if port is 0, bind will assign some free port for us var port: UInt16 = 0 let hosts = ["localhost", String(cString: temp)] var hints = addrinfo() hints.ai_flags = 0 hints.ai_family = PF_UNSPEC for host in hosts { print("\n\(host)") print() // retrieve the info // getaddrinfo will allocate the memory, we are responsible to free it! var info: UnsafeMutablePointer<addrinfo>? defer { if info != nil { freeaddrinfo(info) } } var status: Int32 = getaddrinfo(host, String(port), nil, &info) guard status == 0 else { print(errno, String(cString: gai_strerror(errno))) continue } var p = info var i = 0 var ipFamily = "" var ipType = "" while p != nil { i += 1 // use local copy of info var _info = p!.pointee p = _info.ai_next switch _info.ai_family { case PF_INET: _info.ai_addr.withMemoryRebound(to: sockaddr_in.self, capacity: 1, { p in inet_ntop(AF_INET, &p.pointee.sin_addr, &temp, socklen_t(temp.count)) ipFamily = "IPv4" }) case PF_INET6: _info.ai_addr.withMemoryRebound(to: sockaddr_in6.self, capacity: 1, { p in inet_ntop(AF_INET6, &p.pointee.sin6_addr, &temp, socklen_t(temp.count)) ipFamily = "IPv6" }) default: continue } print(i,"\(ipFamily)\t\(String(cString: temp))", SocketType(rawValue: _info.ai_socktype)!) } } 

它打印在我的电脑上

 localhost 1 IPv6 ::1 SOCK_RAW 2 IPv6 ::1 SOCK_DGRAM 3 IPv4 127.0.0.1 SOCK_RAW 4 IPv4 127.0.0.1 SOCK_DGRAM Ivos-MacBook-Pro.local 1 IPv6 fe80::18a2:e892:fbd7:558e SOCK_RAW 2 IPv6 fe80::18a2:e892:fbd7:558e SOCK_DGRAM 3 IPv4 172.20.10.3 SOCK_RAW 4 IPv4 172.20.10.3 SOCK_DGRAM 

Answer 3

我做了以下的事情，以获得设备的确切的IP地址。 由于我想包含更新后的代码来使用Swift 3获取IP地址，所以我在这里发布答案。 从Swift引用- 获取设备的IP地址

1. 在桥接头中添加#include<ifaddrs.h>

2. 创build以下function获取IP地址。

    func getIP()-> String? { var address: String? var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil if getifaddrs(&ifaddr) == 0 { var ptr = ifaddr while ptr != nil { defer { ptr = ptr?.pointee.ifa_next } // memory has been renamed to pointee in swift 3 so changed memory to pointee let interface = ptr?.pointee let addrFamily = interface?.ifa_addr.pointee.sa_family if addrFamily == UInt8(AF_INET) || addrFamily == UInt8(AF_INET6) { if let name: String = String(cString: (interface?.ifa_name)!), name == "en0" { // String.fromCString() is deprecated in Swift 3. So use the following code inorder to get the exact IP Address. var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST)) getnameinfo(interface?.ifa_addr, socklen_t((interface?.ifa_addr.pointee.sa_len)!), &hostname, socklen_t(hostname.count), nil, socklen_t(0), NI_NUMERICHOST) address = String(cString: hostname) } } } freeifaddrs(ifaddr) } return address } 

3. 为了获得IP地址， print(getIP())

validation： – >转到设置 – > Wi-Fi – >点击我的符号 – >你可以检查你的设备的IP地址。

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