NSKeyedArchiver 归档储存 (建立文件夹成功之后必须归档到具体文件上不然会失败)
注意:建立好文件之后,一定要再加入一个路径后者名字,不然会归档失败.
model类型
#import
NS_ASSUME_NONNULL_BEGIN
@interface Persion : NSObject
@property(nonatomic,strong) NSString *name;
@property(nonatomic,assign) int age;
@property(nonatomic,strong) NSString *sex;
+(Persion *)persionWith:(NSString *)name age:(int)age sex:(NSString *)sex;
@end
#import "Persion.h"
@implementation Persion
-(void)encodeWithCoder:(NSCoder *)aCoder{
[aCoder encodeObject:self.name forKey:@"name"];
[aCoder encodeInt:self.age forKey:@"age"];
[aCoder encodeObject:self.sex forKey:@"sex"];
}
-(instancetype)initWithCoder:(NSCoder *)aDecoder{
self = [super init];
if (self) {
self.name = [aDecoder decodeObjectForKey:@"name"];
self.age = [aDecoder decodeIntForKey:@"age"];
self.sex = [aDecoder decodeObjectForKey:@"sex"];
}
return self;
}
+(Persion *)persionWith:(NSString *)name age:(int)age sex:(NSString *)sex{
Persion *per = [[Persion alloc]init];
per.name = name;
per.age = age;
per.sex = sex;
return per;
}
-(NSString *)description{
return [NSString stringWithFormat:@"name %@ age %d sex %@",self.name,self.age,self.sex];
}
@end注以下方法实验过归档和反归档
Persion *p1 = [Persion persionWith:@"aaaaa" age:23 sex:@"nv"];
Persion *p2 = [Persion persionWith:@"bbbbb" age:33 sex:@"nan"];
Persion *p3 = [Persion persionWith:@"ccccc" age:28 sex:@"nv"];
NSArray *arr = @[p1,p2,p3];
NSString * scourcePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString * path1 = [[scourcePath stringByAppendingPathComponent:@"MiDou"] stringByAppendingPathComponent:@"123"];
if (![[NSFileManager defaultManager] fileExistsAtPath:path1]) {
[[NSFileManager defaultManager] createDirectoryAtPath:path1 withIntermediateDirectories:YES attributes:nil error:nil];
}
if([NSKeyedArchiver archiveRootObject:arr toFile:[path1 stringByAppendingString:@"midou.text"]]){
NSLog(@"成功");
}else{
NSLog(@"失败");
}
//将path文件路径的数据解档出来
NSArray *unarchiveNumbers = [NSKeyedUnarchiver unarchiveObjectWithFile:path1];NSKeyedArchiver 归档储存 (建立文件夹成功之后必须归档到具体文件上不然会失败)
***************************************************
model类型
#import
NS_ASSUME_NONNULL_BEGIN
@interface Persion : NSObject
@property(nonatomic,strong) NSString *name;
@property(nonatomic,assign) int age;
@property(nonatomic,strong) NSString *sex;
+(Persion *)persionWith:(NSString *)name age:(int)age sex:(NSString *)sex;
@end
NS_ASSUME_NONNULL_END
#import "Persion.h"
@implementation Persion
+(BOOL)supportsSecureCoding{
return YES;
}
-(void)encodeWithCoder:(NSCoder *)aCoder{
[aCoder encodeObject:self.name forKey:@"name"];
[aCoder encodeInt:self.age forKey:@"age"];
[aCoder encodeObject:self.sex forKey:@"sex"];
}
-(instancetype)initWithCoder:(NSCoder *)aDecoder{
self = [super init];
if (self) {
self.name = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"name"];
self.age = [[aDecoder decodeObjectOfClass:[NSNumber class] forKey:@"age"] intValue];
self.sex = [aDecoder decodeObjectOfClass:[NSString class] forKey:@"sex"];
}
return self;
}
+(Persion *)persionWith:(NSString *)name age:(int)age sex:(NSString *)sex{
Persion *per = [[Persion alloc]init];
per.name = name;
per.age = age;
per.sex = sex;
return per;
}
-(NSString *)description{
return [NSString stringWithFormat:@"name %@ age %d sex %@",self.name,self.age,self.sex];
}
@end本人xcode跟新到10.1了发现上面的方法弃用
新的实现方法:
Persion *p1 = [Persion persionWith:@"aaaaa" age:23 sex:@"nv"];
Persion *p2 = [Persion persionWith:@"bbbbb" age:33 sex:@"nan"];
Persion *p3 = [Persion persionWith:@"ccccc" age:28 sex:@"nv"];
NSArray *arr = @[p1,p2,p3];
//路径
NSString * scourcePath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString * path1 = [[scourcePath stringByAppendingPathComponent:@"MiDou"] stringByAppendingPathComponent:@"123"];
if (![[NSFileManager defaultManager] fileExistsAtPath:path1]) {
[[NSFileManager defaultManager] createDirectoryAtPath:path1 withIntermediateDirectories:YES attributes:nil error:nil];
}
//归档
NSData *data1 = [NSKeyedArchiver archivedDataWithRootObject:arr requiringSecureCoding:YES error:nil];
if ([data1 writeToFile:[path1 stringByAppendingString:@"midou.text"] atomically:YES]) {
NSLog(@"arr成功");
} else {
NSLog(@"arr失败");
};
//解档
NSError *err = nil;
NSArray *array = [NSKeyedUnarchiver unarchivedObjectOfClass:[NSObject class] fromData:[NSData dataWithContentsOfFile:[path1 stringByAppendingString:@"midou.text"] options:NSDataReadingMappedIfSafe error:&err] error:&err];
NSLog(@"array:: %@",array);
if (err) {
NSLog(@"err %@",err.description);
}