構造NSData以構造？

Question

我有以下結構：

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

我將如何轉換成PacketJoin NSData的和回PacketJoin一遍嗎？

Answer 1

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

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