其中TRPerson為自定義的繼承自NSObject的類的子類 ?其中有兩個屬性,name 和 age

.h文件

#import

?

@interface TRPerson : NSObject<</span>NSCoding>

@property (nonatomic,strong)NSString *name;

@property (nonatomic,strong)NSNumber * age;

//初始化方法

- (id)initWithName:(NSString*)name withAge:(NSNumber *)age;

?

@end

?

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.m文件

#import "TRPerson.h"

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@implementation TRPerson

- (id)initWithName:(NSString *)name withAge:(NSNumber *)age{

? ? if (self=[super init]) {

? ? ? ? self.age=age;

? ? ? ? self.name=name;

? ? }

? ? return? self;

?? ?

}

#pragma mark - NSCoding

?

?//對屬性進(jìn)行解碼(時機(jī):執(zhí)行encodeObject方法)

- (instancetype)initWithCoder:(NSCoder *)aDecoder{

?? self= [super init];

? ? if (self) {

? ? ? ? self.name= [aDecoder decodeObjectForKey:@"name"];

? ? ? ? self.age=[aDecoder decodeObjectForKey:@"age"];

? ? }

? ? return self;

}

?

?

//對屬性進(jìn)行編碼的方法

- (void)encodeWithCoder:(NSCoder *)aCoder{

? ? [aCoder encodeObject:self.age forKey:@"age"];

? ? [aCoder encodeObject:self.name forKey:@"name"];

?? ?

}

- (NSString *)description{

? ? TRPerson *person=[[TRPerson alloc]initWithName:self.name withAge:self.age];

? ? return? [NSString stringWithFormat:@"name:%@ age:%@",person.name ,person.age];

}

?

@end

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ViewController中的viewDidLoad方法中實(shí)現(xiàn)數(shù)據(jù)的歸檔和解擋

?- (void)viewDidLoad {

? ? [super viewDidLoad];

? ? //準(zhǔn)備工作

?? ? //將自定義的TRPerson對象進(jìn)行歸檔(寫)

?? ?

? ? TRPerson *person=[[TRPerson alloc]initWithName:@"張飛" withAge:@20];

? ? //Documents/archiving

? ? NSString *doumentsPath =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES).firstObject;

? ? NSString *archiverPath = [doumentsPath stringByAppendingPathComponent:@"archving"];

? ? //1.可變數(shù)據(jù)類型

? ? NSMutableData *data=[NSMutableData data];

? ? //2.歸檔對象

? ? NSKeyedArchiver *archiver=[[NSKeyedArchiver alloc]initForWritingWithMutableData:data];

? ? //3.編碼

?? ?

? ? [archiver encodeObject:person forKey:@"person"];

? ? //4.編碼完成

? ? [archiver finishEncoding];

? ? //5.寫入文件

?? ?

? ? [data writeToFile:archiverPath atomically:YES];

? ? //將自定義的TRPerson對象進(jìn)行解擋(讀)

? ? //1.讀取數(shù)據(jù)

? ? NSData *readingData=[NSData dataWithContentsOfFile:archiverPath];

? ? //2.解碼對象

? ? NSKeyedUnarchiver *unArchiver=[[NSKeyedUnarchiver alloc]initForReadingWithData:readingData];

? ? //3.解碼

?TRPerson *personRead=[unArchiver decodeObjectForKey:@"person"];

? ? //4.完成解碼

? ? [unArchiver finishDecoding];

? ? //驗證

? ? NSLog(@"%@",personRead );

}

轉(zhuǎn)載于:https://www.cnblogs.com/zhao-jie-li/p/5128460.html

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