iOS中如何实现检测苹果设备的类型

苹果的每个产品都有几个类型，从iphone到ipod、ipad，而每个产品又有几个类型，从iphone2G到iphone5，从iPod touch1到iPod touch5，从ipad1到ipad4，只有你想不到的，没有人家做不到的。

但是在做ios开发中如何检测这些类型呢？下边的方法就是CSDN问答中给出的方法，原问题见：http://ask.csdn.net/questions/997

- (NSString *) platformString{    // Gets a string with the device model    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);     if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 2G";    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";    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:@"iPhone5,2"])    return @"iPhone 5 (GSM+CDMA)";    if ([platform isEqualToString:@"iPod1,1"])      return @"iPod Touch (1 Gen)";    if ([platform isEqualToString:@"iPod2,1"])      return @"iPod Touch (2 Gen)";    if ([platform isEqualToString:@"iPod3,1"])      return @"iPod Touch (3 Gen)";    if ([platform isEqualToString:@"iPod4,1"])      return @"iPod Touch (4 Gen)";    if ([platform isEqualToString:@"iPod5,1"])      return @"iPod Touch (5 Gen)";    if ([platform isEqualToString:@"iPad1,1"])      return @"iPad";    if ([platform isEqualToString:@"iPad1,2"])      return @"iPad 3G";    if ([platform isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";    if ([platform isEqualToString:@"iPad2,2"])      return @"iPad 2";    if ([platform isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";    if ([platform isEqualToString:@"iPad2,4"])      return @"iPad 2";    if ([platform isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";    if ([platform isEqualToString:@"iPad2,6"])      return @"iPad Mini";    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";    if ([platform isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";    if ([platform isEqualToString:@"iPad3,5"])      return @"iPad 4";    if ([platform isEqualToString:@"iPad3,6"])      return @"iPad 4 (GSM+CDMA)";    if ([platform isEqualToString:@"i386"])         return @"Simulator";    if ([platform isEqualToString:@"x86_64"])       return @"Simulator";    return platform;}