我已经实现了一个超轻量级的库，可以根据给出的一些答案来检测使用的设备:https://github.com/schickling/Device.swift

它可以通过迦太基安装，并像这样使用:

import Device

let deviceType = UIDevice.currentDevice().deviceType

switch deviceType {
case .IPhone6: print("Do stuff for iPhone6")
case .IPadMini: print("Do stuff for iPad mini")
default: print("Check other available cases of DeviceType")
}

下面是获取硬件字符串的代码，但是您需要比较这些硬件字符串才能知道它是哪个设备。我已经创建了一个类，包含几乎所有的设备字符串(我们保持字符串最新的新设备)。使用方便，请检查

吉hub /恶魔大师

Objective-C: GitHub/DeviceUtil

public func hardwareString() -> String {
  var name: [Int32] = [CTL_HW, HW_MACHINE]
  var size: Int = 2
  sysctl(&name, 2, nil, &size, &name, 0)
  var hw_machine = [CChar](count: Int(size), repeatedValue: 0)
  sysctl(&name, 2, &hw_machine, &size, &name, 0)

  let hardware: String = String.fromCString(hw_machine)!
  return hardware
}

extension UIDevice {

    public static let hardwareModel: String = {
        var path = [CTL_HW, HW_MACHINE]
        var n = 0
        sysctl(&path, 2, nil, &n, nil, 0)
        var a: [UInt8] = .init(repeating: 0, count: n)
        sysctl(&path, 2, &a, &n, nil, 0)
        return .init(cString: a)
    }()
}

UIDevice.hardwareModel // → iPhone9,3

这个Swift 3.0示例将当前设备模型作为枚举常量返回(以避免与字符串字面值直接比较)。enum的原始值是一个包含人类可读的iOS设备名称的字符串。因为它是Swift，所以认可的设备列表只包括最新的机型，足以支持包含Swift的iOS版本。下面的使用示例利用了这个答案末尾的实现:

    switch UIDevice().type {
    case .iPhone5:
              print("No TouchID sensor")
    case .iPhone5S:
              fallthrough
    case .iPhone6:
              fallthrough
    case .iPhone6plus:
              fallthrough
    case .iPad_Pro9_7:
              fallthrough
    case .iPad_Pro12_9:
              fallthrough
    case .iPhone7:
              fallthrough
    case .iPhone7plus:
              print("Put your thumb on the " + 
                     UIDevice().type.rawValue + " TouchID sensor")
    case .unrecognized:
              print("Device model unrecognized");
    default:
              print(UIDevice().type.rawValue + " not supported by this app");
    }

你的应用应该保持最新的新设备发布，以及当苹果为同一设备家族添加新型号时。例如，iPhone3、1 iPhone3、2 iPhone3、4都是“iPhone 4”。避免编写不考虑新型号的代码，这样你的算法就不会意外地配置失败或对新设备做出响应。你可以参考这个维护列表的iOS设备型号#更新你的应用程序在战略时刻。

iOS includes device-independent interfaces to detect hardware capabilities and parameters such as screen size. The generalized interfaces Apple provides are usually the safest, best supported mechanisms to dynamically adapt an app's behavior to different hardware. Nevertheless, the following code can be useful for prototyping, debugging, testing, or any time code needs to target a specific device family. This technique can also be useful to describe the current device by its common/publicly recognized name.

斯威夫特3

// 1. Declare outside class definition (or in its own file).
// 2. UIKit must be included in file where this code is added.
// 3. Extends UIDevice class, thus is available anywhere in app.
//
// Usage example:
//
//    if UIDevice().type == .simulator {
//       print("You're running on the simulator... boring!")
//    } else {
//       print("Wow! Running on a \(UIDevice().type.rawValue)")
//    }
import UIKit

public enum Model : String {
    case simulator   = "simulator/sandbox",
    iPod1            = "iPod 1",
    iPod2            = "iPod 2",
    iPod3            = "iPod 3",
    iPod4            = "iPod 4",
    iPod5            = "iPod 5",
    iPad2            = "iPad 2",
    iPad3            = "iPad 3",
    iPad4            = "iPad 4",
    iPhone4          = "iPhone 4",
    iPhone4S         = "iPhone 4S",
    iPhone5          = "iPhone 5",
    iPhone5S         = "iPhone 5S",
    iPhone5C         = "iPhone 5C",
    iPadMini1        = "iPad Mini 1",
    iPadMini2        = "iPad Mini 2",
    iPadMini3        = "iPad Mini 3",
    iPadAir1         = "iPad Air 1",
    iPadAir2         = "iPad Air 2",
    iPadPro9_7       = "iPad Pro 9.7\"",
    iPadPro9_7_cell  = "iPad Pro 9.7\" cellular",
    iPadPro10_5      = "iPad Pro 10.5\"",
    iPadPro10_5_cell = "iPad Pro 10.5\" cellular",
    iPadPro12_9      = "iPad Pro 12.9\"",
    iPadPro12_9_cell = "iPad Pro 12.9\" cellular",
    iPhone6          = "iPhone 6",
    iPhone6plus      = "iPhone 6 Plus",
    iPhone6S         = "iPhone 6S",
    iPhone6Splus     = "iPhone 6S Plus",
    iPhoneSE         = "iPhone SE",
    iPhone7          = "iPhone 7",
    iPhone7plus      = "iPhone 7 Plus",
    iPhone8          = "iPhone 8",
    iPhone8plus      = "iPhone 8 Plus",
    iPhoneX          = "iPhone X",
    iPhoneXS         = "iPhone XS",
    iPhoneXSmax      = "iPhone XS Max",
    iPhoneXR         = "iPhone XR",
    iPhone11         = "iPhone 11",
    iPhone11Pro      = "iPhone 11 Pro",
    iPhone11ProMax   = "iPhone 11 Pro Max",
    unrecognized     = "?unrecognized?"
}

public extension UIDevice {
    public var type: Model {
        var systemInfo = utsname()
        uname(&systemInfo)
        let modelCode = withUnsafePointer(to: &systemInfo.machine) {
            $0.withMemoryRebound(to: CChar.self, capacity: 1) {
                ptr in String.init(validatingUTF8: ptr)

            }
        }
        var modelMap : [ String : Model ] = [
            "i386"       : .simulator,
            "x86_64"     : .simulator,
            "iPod1,1"    : .iPod1,
            "iPod2,1"    : .iPod2,
            "iPod3,1"    : .iPod3,
            "iPod4,1"    : .iPod4,
            "iPod5,1"    : .iPod5,
            "iPad2,1"    : .iPad2,
            "iPad2,2"    : .iPad2,
            "iPad2,3"    : .iPad2,
            "iPad2,4"    : .iPad2,
            "iPad2,5"    : .iPadMini1,
            "iPad2,6"    : .iPadMini1,
            "iPad2,7"    : .iPadMini1,
            "iPhone3,1"  : .iPhone4,
            "iPhone3,2"  : .iPhone4,
            "iPhone3,3"  : .iPhone4,
            "iPhone4,1"  : .iPhone4S,
            "iPhone5,1"  : .iPhone5,
            "iPhone5,2"  : .iPhone5,
            "iPhone5,3"  : .iPhone5C,
            "iPhone5,4"  : .iPhone5C,
            "iPad3,1"    : .iPad3,
            "iPad3,2"    : .iPad3,
            "iPad3,3"    : .iPad3,
            "iPad3,4"    : .iPad4,
            "iPad3,5"    : .iPad4,
            "iPad3,6"    : .iPad4,
            "iPhone6,1"  : .iPhone5S,
            "iPhone6,2"  : .iPhone5S,
            "iPad4,1"    : .iPadAir1,
            "iPad4,2"    : .iPadAir2,
            "iPad4,4"    : .iPadMini2,
            "iPad4,5"    : .iPadMini2,
            "iPad4,6"    : .iPadMini2,
            "iPad4,7"    : .iPadMini3,
            "iPad4,8"    : .iPadMini3,
            "iPad4,9"    : .iPadMini3,
            "iPad6,3"    : .iPadPro9_7,
            "iPad6,11"   : .iPadPro9_7,
            "iPad6,4"    : .iPadPro9_7_cell,
            "iPad6,12"   : .iPadPro9_7_cell,
            "iPad6,7"    : .iPadPro12_9,
            "iPad6,8"    : .iPadPro12_9_cell,
            "iPad7,3"    : .iPadPro10_5,
            "iPad7,4"    : .iPadPro10_5_cell,
            "iPhone7,1"  : .iPhone6plus,
            "iPhone7,2"  : .iPhone6,
            "iPhone8,1"  : .iPhone6S,
            "iPhone8,2"  : .iPhone6Splus,
            "iPhone8,4"  : .iPhoneSE,
            "iPhone9,1"  : .iPhone7,
            "iPhone9,2"  : .iPhone7plus,
            "iPhone9,3"  : .iPhone7,
            "iPhone9,4"  : .iPhone7plus,
            "iPhone10,1" : .iPhone8,
            "iPhone10,2" : .iPhone8plus,
            "iPhone10,3" : .iPhoneX,
            "iPhone10,6" : .iPhoneX,
            "iPhone11,2" : .iPhoneXS,
            "iPhone11,4" : .iPhoneXSmax,
            "iPhone11,6" : .iPhoneXSmax,
            "iPhone11,8" : .iPhoneXR,
            "iPhone12,1" : .iPhone11,
            "iPhone12,3" : .iPhone11Pro,
            "iPhone12,5" : .iPhone11ProMax
        ]

    if let model = modelMap[String.init(validatingUTF8: modelCode!)!] {
            return model
        }
        return Model.unrecognized
    }
}

对我有用

var sysinfo = utsname()
uname(&sysinfo)
let data = Data(bytes: &sysinfo.machine, count: Int(_SYS_NAMELEN))
let model = String(cString: [UInt8](data) //iPhone13,1

我发现很多答案都用了字符串。我决定改变@HAS答案使用一个enum:

public enum Devices: String {
    case IPodTouch5
    case IPodTouch6
    case IPhone4
    case IPhone4S
    case IPhone5
    case IPhone5C
    case IPhone5S
    case IPhone6
    case IPhone6Plus
    case IPhone6S
    case IPhone6SPlus
    case IPhone7
    case IPhone7Plus
    case IPhoneSE
    case IPad2
    case IPad3
    case IPad4
    case IPadAir
    case IPadAir2
    case IPadMini
    case IPadMini2
    case IPadMini3
    case IPadMini4
    case IPadPro
    case AppleTV
    case Simulator
    case Other
}

public extension UIDevice {

    public var modelName: Devices {
        var systemInfo = utsname()
        uname(&systemInfo)
        let machineMirror = Mirror(reflecting: systemInfo.machine)
        let identifier = machineMirror.children.reduce("") { identifier, element in
            guard let value = element.value as? Int8 , value != 0 else { return identifier }
            return identifier + String(UnicodeScalar(UInt8(value)))
        }

        switch identifier {
        case "iPod5,1":                                 return Devices.IPodTouch5
        case "iPod7,1":                                 return Devices.IPodTouch6
        case "iPhone3,1", "iPhone3,2", "iPhone3,3":     return Devices.IPhone4
        case "iPhone4,1":                               return Devices.IPhone4S
        case "iPhone5,1", "iPhone5,2":                  return Devices.IPhone5
        case "iPhone5,3", "iPhone5,4":                  return Devices.IPhone5C
        case "iPhone6,1", "iPhone6,2":                  return Devices.IPhone5S
        case "iPhone7,2":                               return Devices.IPhone6
        case "iPhone7,1":                               return Devices.IPhone6Plus
        case "iPhone8,1":                               return Devices.IPhone6S
        case "iPhone8,2":                               return Devices.IPhone6SPlus
        case "iPhone9,1", "iPhone9,3":                  return Devices.IPhone7
        case "iPhone9,2", "iPhone9,4":                  return Devices.IPhone7Plus
        case "iPhone8,4":                               return Devices.IPhoneSE
        case "iPad2,1", "iPad2,2", "iPad2,3", "iPad2,4":return Devices.IPad2
        case "iPad3,1", "iPad3,2", "iPad3,3":           return Devices.IPad3
        case "iPad3,4", "iPad3,5", "iPad3,6":           return Devices.IPad4
        case "iPad4,1", "iPad4,2", "iPad4,3":           return Devices.IPadAir
        case "iPad5,3", "iPad5,4":                      return Devices.IPadAir2
        case "iPad2,5", "iPad2,6", "iPad2,7":           return Devices.IPadMini
        case "iPad4,4", "iPad4,5", "iPad4,6":           return Devices.IPadMini2
        case "iPad4,7", "iPad4,8", "iPad4,9":           return Devices.IPadMini3
        case "iPad5,1", "iPad5,2":                      return Devices.IPadMini4
        case "iPad6,3", "iPad6,4", "iPad6,7", "iPad6,8":return Devices.IPadPro
        case "AppleTV5,3":                              return Devices.AppleTV
        case "i386", "x86_64":                          return Devices.Simulator
        default:                                        return Devices.Other
        }
    }

}