结构到NSData到结构？ [英] Structs to NSData to Structs?

问题描述

我有以下结构：

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

我如何将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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