使用NSKeyedArchiver归档和NSKeyedUnarchiver读档

-(void)encodeWithCoder:(NSCoder *)encoder;
-(id)initWithCoder:(NSCoder *)aDecoder;

#import "Person.h"

@implementation Person

-(void)encodeWithCoder:(NSCoder *)encoder
{
    [encoder encodeObject:_name forKey:@"name"];
    [encoder encodeObject:_title forKey:@"title"];
}
-(id)initWithCoder:(NSCoder *)aDecoder

{
    if (self = [super init]) {
        _name = [aDecoder decodeObjectForKey:@"name"];
        _title = [aDecoder decodeObjectForKey:@"title"];
    }
 
    return self;
}
@end

#define path @"/Users/juanjuan/Desktop/Person.txt"
@interface ViewController ()
- (IBAction)writeClicked:(id)sender;
- (IBAction)readClicked:(id)sender;
@property(nonatomic,strong) NSArray *array;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (IBAction)writeClicked:(id)sender {
    
    Person *p = [[Person alloc]init];
    p.name = @"juanjuan";
    p.title =  @"1111";
   
    Person *p1 = [[Person alloc]init];
    p1.name = @"zhangsan";
    p1.title = @"lisi";
    
    _array = @[p,p1 ];
    
    [NSKeyedArchiver archiveRootObject:_array toFile:path];
}

- (IBAction)readClicked:(id)sender {
    
    
    NSArray *arr =   [NSKeyedUnarchiver  unarchiveObjectWithFile:path];
    Person *pp  = arr[0];
    NSLog(@"%@---name %@",arr,pp.name);
}
@end