Detect the specific iPhone/iPod touch model [dupli

问题:

Possible Duplicate:
Determine device (iPhone, iPod Touch) with iPhone SDK

I am making a game that utilizes the peer-to-peer bluetooth capabilities of the iPhone (and probably the iPod touch 2nd generation). However, to stop the users from trying to play a multiplayer on an iPod 1st gen and iPhone 2G I need to check for the specific device model.

[[UIDevice currentDevice] model] will only tell me if the device is an \"iPhone\" or an \"iPod touch\". Is there a way to check for the specific device model, like: \"iPhone 3GS\", \"iPod touch 1st generation\" or something.

EDIT:

There is a category to UIDevice (I think it\'s created by Erica Sadun, I don\'t take credit for it) that uses the following code to get the specific device model. You can find the whole category here along with other useful stuff: https://github.com/erica/uidevice-extension

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

@implementation UIDevice (Hardware)

/*
 Platforms
 iPhone1,1 -> iPhone 1G
 iPhone1,2 -> iPhone 3G 
 iPod1,1   -> iPod touch 1G 
 iPod2,1   -> iPod touch 2G 
*/

- (NSString *) platform
{
  size_t size;
  sysctlbyname(\"hw.machine\", NULL, &size, NULL, 0);
  char *machine = malloc(size);
    sysctlbyname(\"hw.machine\", machine, &size, NULL, 0);
    NSString *platform = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];
  free(machine);
  return platform;
}

This works and apps using this have been lately approved in the AppStore.

回答1:

Most complete UIDevice (Hardware) category probably is http://github.com/erica/uidevice-extension/ (by Erica Sadun):

[[UIDevice currentDevice] platformType]   // ex: UIDevice4GiPhone
[[UIDevice currentDevice] platformString] // ex: @\"iPhone 4G\"

回答2:

You can get the device model number using uname from sys/utsname.h. For example:

#import <sys/utsname.h>

NSString*
machineName()
{
    struct utsname systemInfo;
    uname(&systemInfo);

    return [NSString stringWithCString:systemInfo.machine
                              encoding:NSUTF8StringEncoding];
}

The result should be:

@\"i386\"      on the simulator
@\"iPod1,1\"   on iPod Touch
@\"iPod2,1\"   on iPod Touch Second Generation
@\"iPod3,1\"   on iPod Touch Third Generation
@\"iPod4,1\"   on iPod Touch Fourth Generation
@\"iPhone1,1\" on iPhone
@\"iPhone1,2\" on iPhone 3G
@\"iPhone2,1\" on iPhone 3GS
@\"iPad1,1\"   on iPad
@\"iPad2,1\"   on iPad 2
@\"iPad3,1\"   on iPad 3 (aka new iPad)
@\"iPhone3,1\" on iPhone 4
@\"iPhone4,1\" on iPhone 4S
@\"iPhone5,1\" on iPhone 5
@\"iPhone5,2\" on iPhone 5

回答3:

How about this code, if new version was released, you will identifier with the last know device

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

- (NSString *)getModel {
    size_t size;
    sysctlbyname(\"hw.machine\", NULL, &size, NULL, 0);
    char *model = malloc(size);
    sysctlbyname(\"hw.machine\", model, &size, NULL, 0);
    NSString *sDeviceModel = [NSString stringWithCString:model encoding:NSUTF8StringEncoding];
    free(model);                              
    if ([sDeviceModel isEqual:@\"i386\"])      return @\"Simulator\";  //iPhone Simulator
    if ([sDeviceModel isEqual:@\"iPhone1,1\"]) return @\"iPhone1G\";   //iPhone 1G
    if ([sDeviceModel isEqual:@\"iPhone1,2\"]) return @\"iPhone3G\";   //iPhone 3G
    if ([sDeviceModel isEqual:@\"iPhone2,1\"]) return @\"iPhone3GS\";  //iPhone 3GS
    if ([sDeviceModel isEqual:@\"iPhone3,1\"]) return @\"iPhone4 AT&T\";  //iPhone 4 - AT&T
    if ([sDeviceModel isEqual:@\"iPhone3,2\"]) return @\"iPhone4 Other\";  //iPhone 4 - Other carrier
    if ([sDeviceModel isEqual:@\"iPhone3,3\"]) return @\"iPhone4\";    //iPhone 4 - Other carrier
    if ([sDeviceModel isEqual:@\"iPhone4,1\"]) return @\"iPhone4S\";   //iPhone 4S
    if ([sDeviceModel isEqual:@\"iPhone5,1\"]) return @\"iPhone5\";    //iPhone 5 (GSM)
    if ([sDeviceModel isEqual:@\"iPod1,1\"])   return @\"iPod1stGen\"; //iPod Touch 1G
    if ([sDeviceModel isEqual:@\"iPod2,1\"])   return @\"iPod2ndGen\"; //iPod Touch 2G
    if ([sDeviceModel isEqual:@\"iPod3,1\"])   return @\"iPod3rdGen\"; //iPod Touch 3G
    if ([sDeviceModel isEqual:@\"iPod4,1\"])   return @\"iPod4thGen\"; //iPod Touch 4G
    if ([sDeviceModel isEqual:@\"iPad1,1\"])   return @\"iPadWiFi\";   //iPad Wifi
    if ([sDeviceModel isEqual:@\"iPad1,2\"])   return @\"iPad3G\";     //iPad 3G
    if ([sDeviceModel isEqual:@\"iPad2,1\"])   return @\"iPad2\";      //iPad 2 (WiFi)
    if ([sDeviceModel isEqual:@\"iPad2,2\"])   return @\"iPad2\";      //iPad 2 (GSM)
    if ([sDeviceModel isEqual:@\"iPad2,3\"])   return @\"iPad2\";      //iPad 2 (CDMA)

    NSString *aux = [[sDeviceModel componentsSeparatedByString:@\",\"] objectAtIndex:0];

//If a newer version exist
    if ([aux rangeOfString:@\"iPhone\"].location!=NSNotFound) {
        int version = [[aux stringByReplacingOccurrencesOfString:@\"iPhone\" withString:@\"\"] intValue];
        if (version == 3) return @\"iPhone4\"
        if (version >= 4) return @\"iPhone4s\";

    }
    if ([aux rangeOfString:@\"iPod\"].location!=NSNotFound) {
        int version = [[aux stringByReplacingOccurrencesOfString:@\"iPod\" withString:@\"\"] intValue];
        if (version >=4) return @\"iPod4thGen\";
    }
    if ([aux rangeOfString:@\"iPad\"].location!=NSNotFound) {
        int version = [[aux stringByReplacingOccurrencesOfString:@\"iPad\" withString:@\"\"] intValue];
        if (version ==1) return @\"iPad3G\";
        if (version >=2) return @\"iPad2\";
    }
    //If none was found, send the original string
    return sDeviceModel;
}

回答4:

BOOL hasHighResScreen = NO;
if ([UIScreen instancesRespondToSelector:@selector(scale)]) {
    CGFloat scale = [[UIScreen mainScreen] scale];
    if (scale > 1.0) {
        hasHighResScreen = YES;
    }
}

回答5:

iPhone 4 is iPhone3,1 and iPhone3,2
iPhone 4S is iPhone4,1
iPad 2 is iPad2,1 iPad2,2 and iPad2,3 depending on version (GSM etc)
iPad 3 is iPad3,1 iPad3,2 and iPad3,3 depending on version (GSM etc)

See Iphone secrets (scroll down to \"internal product codes\")

Another good source is: everyiphone.com

回答6:

NSString* valueDevice = [[UIDevice currentDevice] model];

and then check if the string is equal to whatever device you are looking for like :

if(value==@\"iPod1,1\" ) 
{}

and you should be good to go