获得设备的唯一标识符UDID

在IOS5之后，苹果为避免根据UDID获得用户的信息，而禁止使用uniqueIdentifier获得UDID，但是仍有些应用需要根据UDID区分设备

有一个系统的库IOKit.framework可以获得设备的唯一标识

    NSString *serialNumber = nil;
 
    NSString * path = [[NSBundle mainBundle]pathForResource:@"IOKit.framework" ofType:nil];
 
    const char * a =[path UTF8String];
 
//    void *IOKit = dlopen(a, RTLD_NOW);
 
    void *IOKit = dlopen("/System/Library/Frameworks/IOKit.framework/IOKit", RTLD_NOW);
 
    if (IOKit)
 
    {
 
        mach_port_t *kIOMasterPortDefault = dlsym(IOKit, "kIOMasterPortDefault");
 
        CFMutableDictionaryRef (*IOServiceMatching)(const char *name) = dlsym(IOKit, "IOServiceMatching");
 
        mach_port_t (*IOServiceGetMatchingService)(mach_port_t masterPort, CFDictionaryRef matching) = dlsym(IOKit, "IOServiceGetMatchingService");
 
        CFTypeRef (*IORegistryEntryCreateCFProperty)(mach_port_t entry, CFStringRef key, CFAllocatorRef allocator, uint32_t options) = dlsym(IOKit, "IORegistryEntryCreateCFProperty");
 
        kern_return_t (*IOObjectRelease)(mach_port_t object) = dlsym(IOKit, "IOObjectRelease");
 
        if (kIOMasterPortDefault && IOServiceGetMatchingService && IORegistryEntryCreateCFProperty && IOObjectRelease)
 
        {
 
            mach_port_t platformExpertDevice = IOServiceGetMatchingService(*kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice"));
 
            if (platformExpertDevice)
 
            {
 
                CFTypeRef platformSerialNumber= IORegistryEntryCreateCFProperty(platformExpertDevice, CFSTR("IOPlatformUUID"), kCFAllocatorDefault, );
 
                if (CFGetTypeID(platformSerialNumber) == CFStringGetTypeID())
 
                {
 
                    serialNumber = [NSString stringWithString:(__bridge NSString*)platformSerialNumber];
 
                    CFRelease(platformSerialNumber);
 
                }
 
                IOObjectRelease(platformExpertDevice);
 
            }
 
        }
 
        dlclose(IOKit);
 
    }
 
    return serialNumber;

但是这个方法只能获得模拟器上的UDID很坑爹啊

那还有另外的方法获得设备的信息，那就是走苹果的MDM

详情参考http://www.cnblogs.com/liyy2015/p/6030032.html