How to get iPhone OS number ?

How to get iPhone OS number ? 收藏

To check current iPhone OS version whether satisfy requirement

NSString *reqSysVer = @"3.1";
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
    bellowReqSysVer = TRUE;

 

Another useful info

ref: http://servin.com/iphone/uidevice/iPhone-UIDevice.html

NSLog([[UIDevice currentDevice] name]); // Name of the phone as named by user
NSLog([[UIDevice currentDevice] uniqueIdentifier]); // A GUID like string
NSLog([[UIDevice currentDevice] systemName]); // "iPhone OS"
NSLog([[UIDevice currentDevice] systemVersion]); // "2.2.1"
NSLog([[UIDevice currentDevice] model]); // "iPhone" on both devices
NSLog([[UIDevice currentDevice] localizedModel]); // "iPhone" on both devices

 

How to determine iPhone 3G or iPhone 3GS ?

ref : http://iphonedevelopertips.com/device/determine-if-iphone-is-3g-or-3gs-determine-if-ipod-is-first-or-second-generation.html

#import
#import
- (NSString *)machine
{
    size_t size;

    // Set 'oldp' parameter to NULL to get the size of the data
    // returned so we can allocate appropriate amount of space
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);

    // Allocate the space to store name
    char *name = malloc(size);

    // Get the platform name
    sysctlbyname("hw.machine", name, &size, NULL, 0);

    // Place name into a string
    NSString *machine = [NSString stringWithCString:name];

    // Done with this
    free(name);

    return machine;
}

 

The return values will be as follows:

• iPhone Simulator == i386
• iPhone == iPhone1,1
• 3G iPhone == iPhone1,2
• 3GS iPhone == iPhone2,1
• 1st Gen iPod == iPod1,1
• 2nd Gen iPod == iPod2,1