How to call and get the current device version? - ios

Question

I am using this code to identify the iPhone Device. Can anyone explain to me how to call and get the current device version?
How to call one of these methods?
+ (DeviceHardwareSpecificPlatform)specificPlatform;
+ (DeviceHardwareGeneralPlatform)generalPlatform;
+ (DeviceHardwarePlatformType)platformType;
+ (NSString *)platformString;
I am calling them from another class.

Answer 1

According to the link you gave, there is a usage.txt file
UIDeviceHardware *h=[[UIDeviceHardware alloc] init];
[self setDeviceModel:[h platformString]];
[h release];
Actually, it's an old piece of code with manually managed memory. With ARC, you may want to use:
UIDeviceHardware *h=[[UIDeviceHardware alloc] init];
[self setDeviceModel:[h platformString]];

Answer 2

The UIDevice class provides all the information of the device on which your app is running.
UIDevice *deviceInfo = [UIDevice currentDevice];
NSLog(#“OS running on device: %#”, deviceInfo.systemName);
// OS running on device: iPhone OS
NSLog(#“OS Version running on device: %#”, deviceInfo.systemVersion);
//OS Version running on device: 7.1
NSLog(#“Device model: %#”, deviceInfo.model);
// Device model: iPod touch
size_t size;
sysctlbyname("hw.machine", NULL, &size, NULL, 0);
char *machine = malloc(size);
sysctlbyname("hw.machine", machine, &size, NULL, 0);
NSString *deviceModelVersion = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];
free(machine);
NSLog(#"Device model version: %#", deviceModelVersion);
//Device model version: iPhone4, 1
NSLog(#“Device name: %#”, deviceInfo.name);
//Device name: my iPod