NSCoder

person.h头文件内容

1. #import <Foundation/Foundation.h>
2. @interface Person : NSObject
3. {
4.     NSString *name;
5.     char sex;
6.     int age;
7. }
8. @property(nonatomic,copy) NSString *name;
9. @property char sex;
10. @property int age;
11. @end

 person.m实现文件

1. #import "Person.h"

1. @implementation Person
2. @synthesize name,age,gender;
3. -(void)encodeWithCoder:(NSCoder *)aCoder
4. {
5.     
6.     [aCoder encodeObject:name forKey:@"stuName"];
7.     NSNumber *age1 = [NSNumber numberWithInt:age];
8.     [aCoder encodeObject:age1 forKey:@"stuAge"];
9.     NSNumber *gender1 = [NSNumber numberWithChar:gender];
10.     [aCoder encodeObject:gender1 forKey:@"stuGender"];
11. }
12. -(id)initWithCoder:(NSCoder *)dCoder
13. {
14.     name = [dCoder decodeObjectForKey:@"stuName"];
15.     age = [[dCoder decodeObjectForKey:@"stuAge"]intValue];
16.     gender = [[dCoder decodeObjectForKey:@"stuGender"]charValue];
17.     return self;
18. }
19. @end

 main.m测试文件

1. #import <Foundation/Foundation.h>
2. #import "Person.h"
3. int main(int argc, const char * argv[]) {
4.     @autoreleasepool {
5.         Person *p1 = [[Person alloc]init];
6.         p1.name = @"zhangsan";
7.         p1.age = 22;
8.         p1.gender = 'F';
9.         Person *p2 = [Person new];
10.         p2.name = @"lisi";
11.         p2.age = 23;
12.         p2.gender = 'M';
13.         
14.         NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:30];
15.         
16.         [dic setObject:p1 forKey:@"person1"];
17.         [dic setObject:p2 forKey:@"person2"];
18.         //把字典内容存入到文件中
19.         if ([NSKeyedArchiver archiveRootObject:dic toFile:@"/Users/mac/Desktop/a.plist"] ) {
20.             NSLog(@"chenggong");
21.         }
22.         
23.         NSMutableDictionary *dic2 = [NSMutableDictionary dictionaryWithCapacity:30];
24.         //从文件中读取内容放入到字典中
25.         dic2 = [NSKeyedUnarchiver unarchiveObjectWithFile:@"/Users/mac/Desktop/a.plist"];
26.         NSEnumerator *enumerator = [dic2 objectEnumerator];
27.         id obj;
28.         //遍历字典内容
29.         while (obj = [enumerator nextObject]) {
30.             NSLog(@"name = %@,age = %i,gender = %c",[obj name],[obj age],[obj gender]);
31.         }
32.     }
33.     return 0;
34. }