📅  最后修改于: 2023-12-03 15:27:48.482000             🧑  作者: Mango
在iOS开发中,获取设备的IPAddress是一个常见的需求,因为它可以帮助我们识别用户所在的网络环境,从而提供更好的用户体验。本文将介绍如何使用Swift来获取设备的IPAddress,并分别展示获取wifi、有线和蜂窝网络的IPAddress的方法。
func getIPAddress() -> String? {
var address: String?
var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil
guard getifaddrs(&ifaddr) == 0 else { return nil }
guard let firstAddr = ifaddr else { return nil }
defer { freeifaddrs(ifaddr) }
for ptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) {
let flags = Int32(ptr.pointee.ifa_flags)
var addr = ptr.pointee.ifa_addr.pointee
guard (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) else { continue }
if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))
if (getnameinfo(ptr.pointee.ifa_addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count),
nil, socklen_t(0), NI_NUMERICHOST) == 0) {
guard let addr = String(cString: hostname, encoding: .ascii) else { continue }
if addr.hasPrefix("192.168") || addr.hasPrefix("10.") {
address = addr
break
}
}
}
}
return address
}
解释:
getifaddrs
函数获得本机的网络接口列表。getnameinfo
函数获取IPAddress,并判断是否为合法的ipv4地址。返回的IPAddress是一个字符串,例如:"192.168.1.100"。如果获取失败,则返回nil。
func getEthernetAddress() -> String? {
var address: String?
var ifaddr: UnsafeMutablePointer<ifaddrs>? = nil
guard getifaddrs(&ifaddr) == 0 else { return nil }
guard let firstAddr = ifaddr else { return nil }
defer { freeifaddrs(ifaddr) }
for ptr in sequence(first: firstAddr, next: { $0.pointee.ifa_next }) {
let flags = Int32(ptr.pointee.ifa_flags)
var addr = ptr.pointee.ifa_addr.pointee
guard (flags & (IFF_UP|IFF_RUNNING|IFF_LOOPBACK)) == (IFF_UP|IFF_RUNNING) else { continue }
if addr.sa_family == UInt8(AF_INET) || addr.sa_family == UInt8(AF_INET6) {
var hostname = [CChar](repeating: 0, count: Int(NI_MAXHOST))
if (getnameinfo(ptr.pointee.ifa_addr, socklen_t(addr.sa_len), &hostname, socklen_t(hostname.count),
nil, socklen_t(0), NI_NUMERICHOST) == 0) {
guard let addr = String(cString: hostname, encoding: .ascii) else { continue }
if addr.hasPrefix("169.254") {
address = addr
break
}
}
}
}
return address
}
解释:
getnameinfo
函数获取IPAddress,并判断是否为合法的ipv4地址。返回的IPAddress是一个字符串,例如:"169.254.1.2"。如果获取失败,则返回nil。
import CoreTelephony
func getCellularAddress() -> String? {
let networkInfo = CTTelephonyNetworkInfo()
guard let carrier = networkInfo.subscriberCellularProvider else { return nil }
if carrier.isoCountryCode == "cn" || carrier.mobileNetworkCode == "460" {
guard let address = getIPAddress() else { return nil }
return address
}
return nil
}
解释:
CTTelephonyNetworkInfo
对象获取当前设备所使用的运营商。返回的IPAddress是一个字符串,例如:"192.168.1.100"。如果获取失败,则返回nil。
总结:
本文介绍了Swift在iOS开发中获取设备的IPAddress的方法,并提供了获取wifi、有线和蜂窝网络IPAddress的代码片段。无论您是开发网络应用、测试网络环境,还是需要读取本机IPAddress的需求,都可以通过本文获得相关的帮助。