IOS swift3 设备型号获取

swift 版本很多设备获取都会改变不像oc 那么稳定,
这次是看到一个好的方式觉得比我以前的觉得代码要优雅特此整理完善

//
//  Created by boosj on 16/10/19.
//  Copyright © 2016年 cz. All rights reserved.
//  UIDevice.current.modelName.rawValue
//判断也不需要直接string字符串 防止代码写错

public enum Model : String {
    case 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",
    iPhone6        = "iPhone 6",
    iPhone6plus    = "iPhone 6 Plus",
    iPhone6S       = "iPhone 6S",
    iPhone6Splus   = "iPhone 6S Plus",
    iPhoneSE       = "iPhone SE",
    iPhone7        = "iPhone 7",
    iPhone7plus    = "iPhone 7 Plus",
    iPadPro9        = "iPad Pro(9.7)",
    iPadPro        = "iPad Pro",
    AppleTV        = "Apple TV",
    iPad           =  "iPad",
    iPod           = "iPod",
    simulator      = "simulator",
    iPhone         = "iPhone",
    unrecognized   = "unrecognized"
    
    
}

public extension UIDevice {
    public var modelName: Model {
        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)))
        }
        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,
            "iPad6,4" : .iPadPro9,
            "iPad6,3" : .iPadPro9,
            "iPad6,7" : .iPadPro,
            "iPad6,8" : .iPadPro,
                
            "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,
            "iPhone7,1" : .iPhone6plus,
            "iPhone7,2" : .iPhone6,
            "iPhone8,1" : .iPhone6S,
            "iPhone8,2" : .iPhone6Splus,
            "iPhone9,1" : .iPhone7,
            "iPhone9,3" : .iPhone7,
            "iPhone9,2" : .iPhone7plus,
            "iPhone9,4" : .iPhone7plus
            
        ]
        
        if let model = modelMap[identifier] {
            return model
        }
        if identifier.range(of: "iPad") != nil{
           return Model.iPad
        }
        if identifier.range(of: "iPod") != nil{
            return Model.iPod
        }
        if identifier.range(of: "iPhone") != nil{
            return Model.iPhone
        }
        return Model.unrecognized
    }
}

主要知识从http://stackoverflow.com/questions/26028918/ios-how-to-determine-iphone-model-in-swift
转载