Iphone 如何识别一个；“hw.机器”；标识符可靠吗？

我正在寻找完成/维护此方法的最官方来源：

-(NSString*)platformString
{
    NSString *platform = [self platform];

    if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 1G";
    if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";
    if ([platform isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";

    if ([platform isEqualToString:@"iPhone3,1"])    return @"iPhone 4";
    if ([platform isEqualToString:@"iPhone3,2"])    return @"iPhone 4 (Other Carrier)";
    if ([platform isEqualToString:@"iPhone3,3"])    return @"iPhone 4 CDMA";
    if ([platform isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";

    if ([platform isEqualToString:@"iPhone5,1"])    return @"iPhone 5";

    if ([platform isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
    if ([platform isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
    if ([platform isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
    if ([platform isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
    if ([platform isEqualToString:@"iPod5,1"])      return @"iPod Touch 5G";

    if ([platform isEqualToString:@"iPad1,1"])      return @"iPad";

    if ([platform isEqualToString:@"iPad2,1"])      return @"iPad 2 WiFi";
    if ([platform isEqualToString:@"iPad2,2"])      return @"iPad 2 GSM";
    if ([platform isEqualToString:@"iPad2,3"])      return @"iPad 2 CDMA";
    if ([platform isEqualToString:@"iPad2,4"])      return @"iPad 2 CDMAS";
    if ([platform isEqualToString:@"iPad2,5"])      return @"iPad Mini Wifi";
    if ([platform isEqualToString:@"iPad2,6"])      return @"iPad mini (Cellular ATT)";
    if ([platform isEqualToString:@"iPad2,7"])      return @"iPad mini (Cellular Verizon)";

    if ([platform isEqualToString:@"iPad3,1"])      return @"iPad 3 WiFi";
    if ([platform isEqualToString:@"iPad3,2"])      return @"iPad 3 CDMA";
    if ([platform isEqualToString:@"iPad3,3"])      return @"iPad 3 GSM";
    if ([platform isEqualToString:@"iPad3,4"])      return @"iPad 4 Wifi";
    if ([platform isEqualToString:@"iPad3,5"])      return @"iPad 3 (Cellular ATT)";
    if ([platform isEqualToString:@"iPad3,6"])      return @"iPad 3 (Cellular Verizon)";

    if ([platform isEqualToString:@"iPad4,1"])      return @"iPad 4 WiFi";
    if ([platform isEqualToString:@"iPad4,2"])      return @"iPad 4 GSM";
    if ([platform isEqualToString:@"iPad4,3"])      return @"iPad 4 CDMA";

    if ([platform isEqualToString:@"i386"])         return @"Simulator";
    if ([platform isEqualToString:@"x86_64"])       return @"Simulator";

    return [NSString stringWithFormat:@"Unknown: %@", platform];
}

苹果在什么地方对此有什么说法吗？

还是一个在某个地方做过体面研究的探险家

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为了澄清，我在幕后使用了以下代码：

-(NSString*)getSysInfoByName:(char*) typeSpecifier
{
    size_t size;
    sysctlbyname(typeSpecifier, NULL, &size, NULL, 0);

    char *answer = malloc(size);
    sysctlbyname(typeSpecifier, answer, &size, NULL, 0);

    NSString *results = [NSString stringWithCString:answer encoding: NSUTF8StringEncoding];

    free(answer);
    return results;
}

-(NSString*)platform
{ return [self getSysInfoByName:"hw.machine"]; }

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到目前为止，我找到了一些非官方来源：

不过，仍在寻找更官方的消息来源

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刚刚摘自iPhone Wiki（直到iPhone 5S、iPad Air）：

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它现在是代码的一部分，以及代码的其余部分。在课堂上实现。

iOS设备要求以下Apple页面提供更新包：

此XML包含“SupportedDevices”键，其标识符值为“iPhone6,1”、“iPhone5,3”。“Model”键打印在iOS设备的背面，也可以在apple网页上找到，例如：

苹果也在更新其所有型号的支持页面：

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我不会考虑这个非主题的注释——如果你为这些值创建一个字典（在代码或PLIST中），而不是有49个代码>如果语句，那就太容易了。当这些细节发生变化时，您将受到其他人的摆布。@rmaddy与此同时，我刚刚开始以这种方式实施。：）反正9月5日就要换了。：）用新设备更新。XML真是太棒了。虽然它不是针对第三方的，但我的意思是它是变更的主体。伟大的来源，以检查无论如何。

-(NSDictionary*)deviceModelDataForMachineIDs
{
    return @{

         //iPad.
         @"iPad1,1" : @[ @"iPad 1G", @"Wi-Fi / GSM", @"A1219 / A1337" ],
         @"iPad2,1" : @[ @"iPad 2", @"Wi-Fi", @"A1395" ],
         @"iPad2,2" : @[ @"iPad 2", @"GSM", @"A1396" ],
         @"iPad2,3" : @[ @"iPad 2", @"CDMA", @"A1397" ],
         @"iPad2,4" : @[ @"iPad 2", @"Wi-Fi Rev A", @"A1395" ],
         @"iPad2,5" : @[ @"iPad mini", @"Wi-Fi", @"A1432" ],
         @"iPad2,6" : @[ @"iPad mini", @"GSM", @"A1454" ],
         @"iPad2,7" : @[ @"iPad mini", @"GSM+CDMA", @"A1455" ],
         @"iPad3,1" : @[ @"iPad 3", @"Wi-Fi", @"A1416" ],
         @"iPad3,2" : @[ @"iPad 3", @"GSM+CDMA", @"A1403" ],
         @"iPad3,3" : @[ @"iPad 3", @"GSM", @"A1430" ],
         @"iPad3,4" : @[ @"iPad 4", @"Wi-Fi", @"A1458" ],
         @"iPad3,5" : @[ @"iPad 4", @"GSM", @"A1459" ],
         @"iPad3,6" : @[ @"iPad 4", @"GSM+CDMA", @"A1460" ],
         @"iPad4,1" : @[ @"iPad Air", @"Wi‑Fi", @"A1474" ],
         @"iPad4,2" : @[ @"iPad Air", @"Cellular", @"A1475" ],
         @"iPad4,4" : @[ @"iPad mini 2", @"Wi‑Fi", @"A1489" ],
         @"iPad4,5" : @[ @"iPad mini 2", @"Cellular", @"A1517" ],
         @"iPad4,6" : @[ @"iPad mini 2", @"N/A", @"A1491" ],
         @"iPad4,7" : @[ @"iPad mini 3", @"N/A", @"A1599" ],
         @"iPad4,8" : @[ @"iPad mini 3", @"N/A", @"A1600" ],
         @"iPad4,9" : @[ @"iPad mini 3", @"N/A", @"A1601" ],
         @"iPad5,3" : @[ @"iPad Air 2", @"N/A", @"A1566" ],
         @"iPad5,4" : @[ @"iPad Air 2", @"N/A", @"A1567" ],

         //iPhone.
         @"iPhone1,1" : @[ @"iPhone 2G", @"GSM", @"A1203" ],
         @"iPhone1,2" : @[ @"iPhone 3G", @"GSM", @"A1241 / A13241" ],
         @"iPhone2,1" : @[ @"iPhone 3GS", @"GSM", @"A1303 / A13251" ],
         @"iPhone3,1" : @[ @"iPhone 4", @"GSM", @"A1332" ],
         @"iPhone3,2" : @[ @"iPhone 4", @"GSM Rev A", @"-" ],
         @"iPhone3,3" : @[ @"iPhone 4", @"CDMA", @"A1349" ],
         @"iPhone4,1" : @[ @"iPhone 4S", @"GSM+CDMA", @"A1387 / A14311" ],
         @"iPhone5,1" : @[ @"iPhone 5", @"GSM", @"A1428" ],
         @"iPhone5,2" : @[ @"iPhone 5", @"GSM+CDMA", @"A1429 / A14421" ],
         @"iPhone5,3" : @[ @"iPhone 5C", @"GSM", @"A1456 / A1532" ],
         @"iPhone5,4" : @[ @"iPhone 5C", @"Global", @"A1507 / A1516 / A1526 / A1529" ],
         @"iPhone6,1" : @[ @"iPhone 5S", @"GSM", @"A1433 / A1533" ],
         @"iPhone6,2" : @[ @"iPhone 5S", @"Global", @"A1457 / A1518 / A1528 / A1530" ],
         @"iPhone7,2" : @[ @"iPhone 6", @"N/A", @"A1549 / A1586" ],
         @"iPhone7,1" : @[ @"iPhone 6 Plus", @"N/A", @"A1522 / A1524" ],

         //iPod.
         @"iPod1,1" : @[ @"iPod touch 1G", @"-", @"A1213" ],
         @"iPod2,1" : @[ @"iPod touch 2G", @"-", @"A1288" ],
         @"iPod3,1" : @[ @"iPod touch 3G", @"-", @"A1318" ],
         @"iPod4,1" : @[ @"iPod touch 4G", @"-", @"A1367" ],
         @"iPod5,1" : @[ @"iPod touch 5G", @"-", @"A1421 / A1509" ]

    };
}