结构到 NSData 到结构?

Structs to NSData to Structs?(结构到 NSData 到结构?)

问题描述

我有以下结构:

typedef enum
{
    kPacketTypeJoin = 1,
    kPacketTypeServerAcceptedJoin,
    kPacketTypeSelectedNumber,
} PacketTypes;    
typedef struct
{
    PacketTypes type;
    NSString *name;
} PacketJoin;

如何将 PacketJoin 转换为 NSData 并再次转换回 PacketJoin?

how would I convert a PacketJoin into NSData and back to PacketJoin again?

推荐答案

// make a NSData object
NSData *myData = [NSData dataWithBytes:&myPacketJoin length:sizeof(myPacketJoin)];

// make a new PacketJoin
PacketJoin newJoin;
[myData getBytes:&newJoin length:sizeof(newJoin)];

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