【IPHONE开发-OBJECTC入门学习】对象的归档和解归档

转自：http://blog.csdn.net/java886o/article/details/9046967

1. #import <Foundation/Foundation.h>
2. #import "Person.h"
3. int main(int argc, const char * argv[])
4. {
5. @autoreleasepool {
6. //-----------第1种归档方式---------
7. //1.使用NSKeyedArchiver 归档对象到文件(对象序列化,持久化)
8. NSArray* arrays = [[NSArray alloc]initWithObjects:@"111",@"222", nil];
9. NSString* userPath = NSHomeDirectoryForUser(@"3g2win");
10. NSLog(@"userPath=%@",userPath);
11. NSString* bakFilePath = [userPath stringByAppendingFormat:@"/test.txt"];
12. NSLog(@"bakFilePath=%@",bakFilePath);
13. NSLog(@"归档前的数组:\n\n%@",arrays);
14. //归档
15. if ([NSKeyedArchiver archiveRootObject:arrays toFile:bakFilePath]){
16. NSLog(@"归档成功...\n\n");
17. }else {
18. NSLog(@"归档失败...\n\n");
19. }
20. //2.使用NSKeyedUnarchiver 解归档文件到对象(反序列化)
21. //解归档
22. NSArray* srcArr =  [NSKeyedUnarchiver unarchiveObjectWithFile:bakFilePath];
23. NSLog(@"解归档后的数组:\n\n%@",srcArr);
24. //------------第2种归档方式---------
25. //归档
26. NSMutableData* data = [NSMutableData alloc];
27. NSKeyedArchiver* archiver = [NSKeyedArchiver alloc];
28. [archiver initForWritingWithMutableData:data];
29. [archiver encodeObject:@"张三" forKey:@"name"];
30. [archiver encodeInt:25 forKey:@"age"];
31. [archiver encodeFloat:5200.5F forKey:@"money"];
32. [archiver finishEncoding];
33. [data writeToFile:@"/Users/3g2win/11111111111.txt" atomically:YES];
34. //解归档
35. NSMutableData* data2 = [NSMutableData dataWithContentsOfFile:@"/Users/3g2win/11111111111.txt"];
36. NSKeyedUnarchiver* unArchiver = [NSKeyedUnarchiver alloc];
37. [unArchiver initForReadingWithData:data2];
38. NSLog(@"name=%@",[unArchiver decodeObjectForKey:@"name"]);
39. NSLog(@"age=%d",[unArchiver decodeIntForKey:@"age"]);
40. NSLog(@"money=%f",[unArchiver decodeFloatForKey:@"money"]);
41. //-------------自定义对象的归档和解归档------------
42. Person* zhao6 = [[Person alloc] initWithName:@"赵六" withAge:18];
43. [zhao6 display];
44. //归档
45. [NSKeyedArchiver archiveRootObject:zhao6 toFile:@"/Users/3g2win/zhao6.txt"];
46. //解档
47. Person* newZhao6 = [NSKeyedUnarchiver unarchiveObjectWithFile:@"/Users/3g2win/zhao6.txt"];
48. [newZhao6 display];
49. }
50. return 0;
51. }

#import <Foundation/Foundation.h>
#import "Person.h"

int main(int argc, const char * argv[])
{

    @autoreleasepool {

        //-----------第1种归档方式---------

        //1.使用NSKeyedArchiver 归档对象到文件(对象序列化,持久化)
        NSArray* arrays = [[NSArray alloc]initWithObjects:@"111",@"222", nil];

        NSString* userPath = NSHomeDirectoryForUser(@"3g2win");

        NSLog(@"userPath=%@",userPath);

        NSString* bakFilePath = [userPath stringByAppendingFormat:@"/test.txt"];

        NSLog(@"bakFilePath=%@",bakFilePath);

        NSLog(@"归档前的数组:\n\n%@",arrays);

        //归档

        if ([NSKeyedArchiver archiveRootObject:arrays toFile:bakFilePath]){
            NSLog(@"归档成功...\n\n");
        }else {
            NSLog(@"归档失败...\n\n");
        }

        //2.使用NSKeyedUnarchiver 解归档文件到对象(反序列化)
        //解归档
        NSArray* srcArr =  [NSKeyedUnarchiver unarchiveObjectWithFile:bakFilePath];

        NSLog(@"解归档后的数组:\n\n%@",srcArr);

        //------------第2种归档方式---------

        //归档
        NSMutableData* data = [NSMutableData alloc];
        NSKeyedArchiver* archiver = [NSKeyedArchiver alloc];
        [archiver initForWritingWithMutableData:data];
        [archiver encodeObject:@"张三" forKey:@"name"];
        [archiver encodeInt:25 forKey:@"age"];
        [archiver encodeFloat:5200.5F forKey:@"money"];
        [archiver finishEncoding];
        [data writeToFile:@"/Users/3g2win/11111111111.txt" atomically:YES];

        //解归档
        NSMutableData* data2 = [NSMutableData dataWithContentsOfFile:@"/Users/3g2win/11111111111.txt"];
        NSKeyedUnarchiver* unArchiver = [NSKeyedUnarchiver alloc];
        [unArchiver initForReadingWithData:data2];

        NSLog(@"name=%@",[unArchiver decodeObjectForKey:@"name"]);

        NSLog(@"age=%d",[unArchiver decodeIntForKey:@"age"]);

        NSLog(@"money=%f",[unArchiver decodeFloatForKey:@"money"]);

        //-------------自定义对象的归档和解归档------------
        Person* zhao6 = [[Person alloc] initWithName:@"赵六" withAge:18];

        [zhao6 display];

        //归档
        [NSKeyedArchiver archiveRootObject:zhao6 toFile:@"/Users/3g2win/zhao6.txt"];

        //解档

        Person* newZhao6 = [NSKeyedUnarchiver unarchiveObjectWithFile:@"/Users/3g2win/zhao6.txt"];

        [newZhao6 display];

    }
    return 0;
}

Person.h

1. #import <Foundation/Foundation.h>
2. //必须实现NSCoding协议才能够归档解归档自定义类
3. @interface Person : NSObject <NSCoding>
4. {
5. NSString* name;
6. int age;
7. }
8. @property (nonatomic,assign) NSString* name;
9. @property (nonatomic,assign) int age;
10. - (id) initWithName:(NSString*) _name withAge:(int) _age;
11. - (void) display;
12. @end

#import <Foundation/Foundation.h>

//必须实现NSCoding协议才能够归档解归档自定义类

@interface Person : NSObject <NSCoding>

{
    NSString* name;
    int age;
}

@property (nonatomic,assign) NSString* name;
@property (nonatomic,assign) int age;

- (id) initWithName:(NSString*) _name withAge:(int) _age;

- (void) display;

@end

Person.m

1. #import "Person.h"
2. #define NAME @"NAME"
3. #define AGE @"AGE"
4. @implementation Person
5. @synthesize name;
6. @synthesize age;
7. - (id) initWithName:(NSString*) _name withAge:(int) _age {
8. if (self = [super init]) {
9. self.name = _name;
10. self.age = _age;
11. }
12. return self;
13. }
14. - (void) display {
15. NSLog(@"Person Name : %@\t Age :%d",name,age);
16. }
17. //归档编码
18. - (void)encodeWithCoder:(NSCoder *)aCoder {
19. [aCoder encodeObject:name forKey:NAME];
20. [aCoder encodeInt:age forKey:AGE];
21. }
22. //解归档解码
23. - (id)initWithCoder:(NSCoder *)aDecoder {
24. if (self = [super init]) {
25. self.name = [aDecoder decodeObjectForKey:NAME];
26. self.age = [aDecoder decodeIntForKey:AGE];
27. }
28. return self;
29. }
30. @end