6 归档解档(自定义对象数据存储)

1 #import <Foundation/Foundation.h>
2 //记得要遵守<NSCoding>协议

> 3 @interface person : NSObject<NSCoding> 4 @property(nonatomic,copy)NSString *name; 5 @property(nonatomic,assign)int age; 6 @end

 1 #import "person.h"
 2
 3 @implementation person
 4 -(void)encodeWithCoder:(NSCoder *)aCoder{
 5     [aCoder encodeObject:_name forKey:@"name"];
 6     [aCoder encodeInt:_age forKey:@"age"];
 7 }
 8 -(id)initWithCoder:(NSCoder *)aDecoder{
 9     if (self =[super init]) {
10         _name =[aDecoder decodeObjectForKey:@"name"];
11         _age =[aDecoder decodeIntForKey:@"age"];
12     }
13
14     return self;
15 }
16 @end

1 #import <UIKit/UIKit.h>
2
3 @interface ViewController : UIViewController
4
5
6 @end

 1 #import "ViewController.h"
 2 #import "person.h"
 3 @interface ViewController ()
 4
 5 @end
 6
 7 @implementation ViewController
 8 //存数据
 9 - (IBAction)save:(id)sender {
10     //获取临近的目录
11     NSString *tmpPath =NSTemporaryDirectory();
12     NSString *filePath =[tmpPath stringByAppendingPathComponent:@"person.data"];
13     person *p =[[person alloc] init];
14     p.name =@"天桥";
15     p.age =18;
16     [NSKeyedArchiver archiveRootObject:p toFile:filePath];
17 }//取数据
18 - (IBAction)read:(id)sender {
19     NSString *tmpPath =NSTemporaryDirectory();
20     NSString *filePath =[tmpPath stringByAppendingPathComponent:@"person.data"];
//记得给解档属性进行赋值21 person * p  =  [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
22     NSLog(@"%@,%d",p.name,p.age);
23
24 }