xcode 结构到 NSData 到结构？
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时间：2020-09-14 20:35:24 来源:igfitidea点击:
Structs to NSData to Structs?
提问by ninjaneer
I have the following struct:
我有以下结构：
typedef enum
{
kPacketTypeJoin = 1,
kPacketTypeServerAcceptedJoin,
kPacketTypeSelectedNumber,
} PacketTypes;
typedef struct
{
PacketTypes type;
NSString *name;
} PacketJoin;
how would I convert a PacketJoin into NSData and back to PacketJoin again?
我如何将 PacketJoin 转换为 NSData 并再次返回 PacketJoin？
回答by Caleb
// make a NSData object
NSData *myData = [NSData dataWithBytes:&myPacketJoin length:sizeof(myPacketJoin)];
// make a new PacketJoin
PacketJoin newJoin;
[myData getBytes:&newJoin length:sizeof(newJoin)];
