직렬화 간단 사용 예제

//DataSerialization.h 파일 

#import <Foundation/Foundation.h>

#define kFilename @"data.plist"   //경로지정

@interface DataSerialization : NSObject

-(NSString*)dataFilePath;

-(NSMutableArray*)loadData;

-(BOOL)saveData:(NSMutableArray*)getArray;

@end

//DataSerialization.m 파일 

#import "DataSerialization.h"

#import "VisitMemberAddData.h"

@implementation DataSerialization

-(NSString*)dataFilePath{  //경로 설정 안해도됨....

    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString* documentDirectory = [paths objectAtIndex:0];

    return [documentDirectory stringByAppendingPathComponent:kFilename];

}

-(NSMutableArray*)loadData

{

    NSString* filePath = [self dataFilePath];

    NSArray* array = nil;

    if([[NSFileManager defaultManager] fileExistsAtPath:filePath]){

        array = [NSArray arrayWithContentsOfFile:filePath];

    }

    NSMutableArray* returnArray = [NSMutableArray arrayWithCapacity:array.count];

    for ( NSData* data in array )

    {

        VisitMemberAddData* visitData = [NSKeyedUnarchiver unarchiveObjectWithData:data];

        [returnArray addObject:visitData];

    }

    return  returnArray;

}

-(BOOL)saveData:(NSMutableArray*)getArray

{

    NSMutableArray* array = [NSMutableArray arrayWithCapacity:getArray.count];

    for ( VisitMemberAddData* visitData in getArray )

    {

        NSData* data = [NSKeyedArchiver archivedDataWithRootObject:visitData];

        [array addObject:data];

    }

    return [array writeToFile:[self dataFilePath] atomically:YES];    

}

@end

직렬화를 위해 데이터를 변환해야한다.

직렬화 저장 데이터 클래스

//VisitMemberAddData.h 파일

#import <Foundation/Foundation.h>

@interface VisitMemberAddData : NSObject <NSCoding>{

    NSString* name;

    NSString* type;

    NSString* companyName;

    NSString* cellPhone;

    NSString* visitObject;

}

@property (retain, nonatomic) NSString* name;

@property (retain, nonatomic) NSString* type;

@property (retain, nonatomic) NSString* companyName;

@property (retain, nonatomic) NSString* cellPhone;

@property (retain, nonatomic) NSString* visitObject;

@end

#import "VisitMemberAddData.h"

@implementation VisitMemberAddData

@synthesize name;

@synthesize cellPhone;

@synthesize companyName;

@synthesize type;

@synthesize visitObject;

-(void)encodeWithCoder:(NSCoder *)aCoder{

    

    [aCoder encodeObject:name forKey:@"name"];  //키값은 모두 다르게 설정해야한다.

    [aCoder encodeObject:cellPhone forKey:@"cellPhone"];

    [aCoder encodeObject:companyName forKey:@"companyName"];

    [aCoder encodeObject:type forKey:@"type"];

    [aCoder encodeObject:visitObject forKey:@"visitObject"];

 }

-(id)initWithCoder:(NSCoder *)aDecoder{

    if(self = [super init]){

        self.name = [aDecoder decodeObjectForKey:@"name"];

        self.cellPhone = [aDecoder decodeObjectForKey:@"cellPhone"];

        self.companyName = [aDecoder decodeObjectForKey:@"companyName"];

        self.type = [aDecoder decodeObjectForKey:@"type"];

        self.visitObject = [aDecoder decodeObjectForKey:@"visitObject"];

    }

       return self;

}

@end

사용 예제

DataSerialization* dataSerialization = [[DataSerialization alloc]init];

    NSMutableArray* sendArray = [[NSMutableArray alloc]init];

    sendArray = [dataSerialization loadData]; //저장된 데이터를 불러온다.

    int getCount = sendArray.count + memberArray.count;

    VisitMemberAddData* getData  = [sendArray objectAtIndex:i];

//데이터를 저장한다.

    if ( [dataSerialization saveData:memberArray] )

    {

        NSLog(@"Success");

    }

    else {

        NSLog(@"Fail");

    }