方法一、
CFUUIDRefpuuid = CFUUIDCreate(nil);
CFStringRefuuidString = CFUUIDCreateString(nil, puuid);
NSString*result = (NSString*)CFBridgingRelease(CFStringCreateCopy(NULL, uuidString));
CFRelease(puuid);
CFRelease(uuidString);
return result;
方法二、
NSString*myUUIDStr = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
UUID 重装后改变；
为了确保UUID唯一， 需要使用更为安全的keychain
下载SSKeychain
#import "SSKeychain.h"
#pragma mark- 获取UUID
- (NSString *)getIOSUUID
{
NSString *retrieveuuid = [SSKeychainpasswordForService:@"xxxxx"account:@"uuid"];
if ( retrieveuuid == nil || [retrieveuuid isEqualToString:@""]){
CFUUIDRef uuid = CFUUIDCreate(NULL);
assert(uuid != NULL);
CFStringRef uuidStr = CFUUIDCreateString(NULL, uuid);
retrieveuuid = [NSStringstringWithFormat:@"%@", uuidStr];
[SSKeychainsetPassword:retrieveuuid forService:@"xxxxx" account:@"uuid"];
}
NSLog(@"UUID: %@", retrieveuuid);
return retrieveuuid;
}
