iOS 开发中 idfa idfv uuid

NSString *idfa= [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];

NSString *idfv = [[[UIDevice currentDevice] identifierForVendor] UUIDString];

-(NSString*) uuid {
    CFUUIDRef puuid = CFUUIDCreate( nil );
    CFStringRef uuidString = CFUUIDCreateString( nil, puuid );
    NSString * result = (NSString *)CFBridgingRelease(CFStringCreateCopy( NULL, uuidString));
    CFRelease(puuid);
    CFRelease(uuidString);
    return result;
}