更有用

#include <sys/types.h>
#include <sys/sysctl.h>

@interface UIDevice(Hardware)

- (NSString *) platform;

- (BOOL)hasRetinaDisplay;

- (BOOL)hasMultitasking;

- (BOOL)hasCamera;

@end

@implementation UIDevice(Hardware)

- (NSString *) platform{
    int mib[2];
size_t len;
char *machine;

mib[0] = CTL_HW;
mib[1] = HW_MACHINE;
sysctl(mib, 2, NULL, &len, NULL, 0);
machine = malloc(len);
sysctl(mib, 2, machine, &len, NULL, 0);

    NSString *platform = [NSString stringWithCString:machine encoding:NSASCIIStringEncoding];
    free(machine);
return platform;
}

- (BOOL)hasRetinaDisplay {
    NSString *platform = [self platform];
    BOOL ret = YES;
    if ([platform isEqualToString:@"iPhone1,1"]) {
        ret = NO;
    }
    else
        if ([platform isEqualToString:@"iPhone1,2"])    ret = NO;
    else 
        if ([platform isEqualToString:@"iPhone2,1"])    ret = NO;
    else 
        if ([platform isEqualToString:@"iPod1,1"])      ret = NO;
    else
        if ([platform isEqualToString:@"iPod2,1"])      ret = NO;
    else
        if ([platform isEqualToString:@"iPod3,1"])      ret = NO;
    return ret;
}

- (BOOL)hasMultitasking {
    if ([self respondsToSelector:@selector(isMultitaskingSupported)]) {
        return [self isMultitaskingSupported];
    }
    return NO;
}

- (BOOL)hasCamera {
   BOOL ret = NO;
   // check camera availability
   return ret;
}

@end

您可以读取属性

NSLog(@"platform %@, retita %@, multitasking %@", [[UIDevice currentDevice] platform], [[UIDevice currentDevice] hasRetinaDisplay] ? @"YES" : @"NO" , [[UIDevice currentDevice] hasMultitasking] ? @"YES" : @"NO");

你可以像这样使用UIDevice类:

NSString *deviceType = [UIDevice currentDevice].model;

if([deviceType isEqualToString:@"iPhone"])
    // it's an iPhone

我想添加一个私有API来检索设备的正面和外壳颜色:

UIDevice *device = [UIDevice currentDevice];
SEL selector = NSSelectorFromString([device.systemVersion hasPrefix:@"7"] ? @"_deviceInfoForKey:" :  @"deviceInfoForKey:");
if ([device respondsToSelector:selector]) {
    NSLog(@"DeviceColor: %@ DeviceEnclosureColor: %@", [device performSelector:selector withObject:@"DeviceColor"], [device performSelector:selector withObject:@"DeviceEnclosureColor"]);
}

我在博客上写过这方面的文章，并提供了一个示例应用程序:

http://www.futuretap.com/blog/device-colors/

我知道答案已经被勾选了，但为了将来的参考，你可以总是使用设备屏幕大小来找出它是哪台设备:

if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {

    CGSize result = [[UIScreen mainScreen] bounds].size;

    if (result.height == 480) {
        // 3.5 inch display - iPhone 4S and below
        NSLog(@"Device is an iPhone 4S or below");
    }

    else if (result.height == 568) {
        // 4 inch display - iPhone 5
        NSLog(@"Device is an iPhone 5/S/C");
    }

    else if (result.height == 667) {
        // 4.7 inch display - iPhone 6
        NSLog(@"Device is an iPhone 6");
    }

    else if (result.height == 736) {
        // 5.5 inch display - iPhone 6 Plus
        NSLog(@"Device is an iPhone 6 Plus");
    }
} 

else if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
       // iPad 9.7 or 7.9 inch display.
       NSLog(@"Device is an iPad.");
}

#import <sys/utsname.h> 

NSString *iPhone = [self iPhoneVersion]; 

-(NSString*)iPhoneVersion
{
   NSString *platform;
   struct utsname systemInfo;
   uname(&systemInfo);
   platform = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

   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:@"iPhone3,3"])    return @"VerizoniPhone 4";
   if ([platform isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
   if ([platform isEqualToString:@"iPhone5,1"])    return @"iPhone 5 (GSM)";
   if ([platform isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";
   if ([platform isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
   if ([platform isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
   if ([platform isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
   if ([platform isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
   if ([platform isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
   if ([platform isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
   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 (WiFi)";
   if ([platform isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
   if ([platform isEqualToString:@"iPad2,6"])      return @"iPad Mini (GSM)";
   if ([platform isEqualToString:@"iPad2,7"])      return @"iPad Mini (GSM+CDMA)";
   if ([platform isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
   if ([platform isEqualToString:@"iPad3,2"])      return @"iPad 3 (GSM+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 4 (GSM)";
   if ([platform isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";
   if ([platform isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
   if ([platform isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
   if ([platform isEqualToString:@"iPad4,3"])      return @"iPad Air";
   if ([platform isEqualToString:@"iPad4,4"])      return @"iPad Mini 2G (WiFi)";
   if ([platform isEqualToString:@"iPad4,5"])      return @"iPad Mini 2G (Cellular)";
   if ([platform isEqualToString:@"iPad4,6"])      return @"iPad Mini 2G";
   if ([platform isEqualToString:@"iPad4,7"])      return @"iPad Mini 3 (WiFi)";
   if ([platform isEqualToString:@"iPad4,8"])      return @"iPad Mini 3 (Cellular)";
   if ([platform isEqualToString:@"iPad4,9"])      return @"iPad Mini 3 (China)";
   if ([platform isEqualToString:@"iPad5,3"])      return @"iPad Air 2 (WiFi)";
   if ([platform isEqualToString:@"iPad5,4"])      return @"iPad Air 2 (Cellular)";
   if ([platform isEqualToString:@"AppleTV2,1"])   return @"Apple TV 2G";
   if ([platform isEqualToString:@"AppleTV3,1"])   return @"Apple TV 3";
   if ([platform isEqualToString:@"AppleTV3,2"])   return @"Apple TV 3 (2013)";
   if ([platform isEqualToString:@"i386"])         return @"Simulator";
   if ([platform isEqualToString:@"x86_64"])       return @"Simulator";
   return platform;
}

- (BOOL)deviceiPhoneOriPod
  {
    NSString *deviceType = [UIDevice currentDevice].model;
    if([deviceType rangeOfString:@"iPhone"].location!=NSNotFound)
      return YES;
    else
      return NO;
  }