Ios 将GUID转换为NSString-Objective
我定义了一个Ios 将GUID转换为NSString-Objective,ios,objective-c,guid,uuid,endianness,Ios,Objective C,Guid,Uuid,Endianness,我定义了一个GUID结构,如下所示 typedef struct _GUID { unsigned long Data1; unsigned short Data2; unsigned short Data3; unsigned char Data4[ 8 ]; } GUID; 我正在尝试将其转换为NSString。但是,我得到了前三个(长、短、短)的反向值。这可能是由于大端的 例如: GUID testGUID = { 0x865f82d0, 0x33
GUID
结构,如下所示
typedef struct _GUID {
unsigned long Data1;
unsigned short Data2;
unsigned short Data3;
unsigned char Data4[ 8 ];
} GUID;
我正在尝试将其转换为NSString
。但是,我得到了前三个(长、短、短)
的反向值。这可能是由于大端的
例如:
GUID testGUID = { 0x865f82d0, 0x3303, 0x403d, { 0xbf, 0xcd, 0xeb, 0xb2, 0xde, 0xd9, 0xa0, 0x69 } };
NSUUID *uuid = [[NSUUID alloc] initWithUUIDBytes:(const unsigned char*)&testGUID];
NSString *uuidString = [uuid UUIDString];
NSLog(@"%@", uuidString);
输出:D0825F86-0333-3D40-BFCD-EBB2DED9A069
预期的:865F82D0-3303-403D-BFCD-EBB2DED9A069
让我知道有没有办法纠正这个问题。非常感谢您的帮助。@borrden comment修复了此问题 这是解决办法
GUID testGUID = { 0x865f82d0, 0x3303, 0x403d, { 0xbf, 0xcd, 0xeb, 0xb2, 0xde, 0xd9, 0xa0, 0x69 } };
testGUID.Data1 = NTOHL(testGUID.Data1);
testGUID.Data2 = NTOHS(testGUID.Data2);
testGUID.Data3 = NTOHS(testGUID.Data3);
NSUUID *uuid = [[NSUUID alloc] initWithUUIDBytes:(const unsigned char*)&testGUID];
NSString *uuidString = [uuid UUIDString];
NSLog(@"%@", uuidString)
您可以使用函数来标准化endianness(您必须对Data1 2和Data3执行此操作)。@Borrden:非常感谢。如何将NSUID转换为Guid?