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. [aCoder encodeObject:name forKey:@"stuName"];
6. NSNumber *age1 = [NSNumber numberWithInt:age];
7. [aCoder encodeObject:age1 forKey:@"stuAge"];
8. NSNumber *gender1 = [NSNumber numberWithChar:gender];
9. [aCoder encodeObject:gender1 forKey:@"stuGender"];
10. }
11. -(id)initWithCoder:(NSCoder *)dCoder
12. {
13. name = [dCoder decodeObjectForKey:@"stuName"];
14. age = [[dCoder decodeObjectForKey:@"stuAge"]intValue];
15. gender = [[dCoder decodeObjectForKey:@"stuGender"]charValue];
16. return self;
17. }
18. @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. NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:30];
14. [dic setObject:p1 forKey:@"person1"];
15. [dic setObject:p2 forKey:@"person2"];
16. //把字典内容存入到文件中
17. if ([NSKeyedArchiver archiveRootObject:dic toFile:@"/Users/mac/Desktop/a.plist"] ) {
18. NSLog(@"chenggong");
19. }
20. NSMutableDictionary *dic2 = [NSMutableDictionary dictionaryWithCapacity:30];
21. //从文件中读取内容放入到字典中
22. dic2 = [NSKeyedUnarchiver unarchiveObjectWithFile:@"/Users/mac/Desktop/a.plist"];
23. NSEnumerator *enumerator = [dic2 objectEnumerator];
24. id obj;
25. //遍历字典内容
26. while (obj = [enumerator nextObject]) {
27. NSLog(@"name = %@,age = %i,gender = %c",[obj name],[obj age],[obj gender]);
28. }
29. }
30. return 0;
31. }