1.创建类 ZFPerson，遵循协议 NSCoding
@interface ZFPerson : NSObject<NSCoding>
@property(strong ,nonatomic) NSString *name;
@property(assign ,nonatomic) int age;
@end
2.ZFPerson类实现协议方法
- (void)encodeWithCoder:(NSCoder*)aCoder{
//存储成员变量个数
unsigned int count =0;
//获取成员变量
Ivar*vars = class_copyIvarList([self class], &count);
//遍历成员变量
for(int i =0; i < count; i++) {
Ivarivar = vars[i];
//变量名
const char * name = ivar_getName(ivar);
//变量名转成utf-8
NSString * key = [NSString stringWithUTF8String:name];
//获取value
id value = [self valueForKey:key];
[aCoder encodeObject:value forKey:key];
}
//释放
free(vars);
}
- (instancetype)initWithCoder:(NSCoder*)aDecoder{
if(self= [super init]) {
//存储成员变量个数
unsigned int count =0;
//获取成员变量
Ivar * vars = class_copyIvarList([self class], &count);
//遍历成员变量
for(int i =0; i < count; i++) {
Ivar ivar = vars[i];
//变量名
const char * name = ivar_getName(ivar);
//变量名转成utf-8
NSString * key = [NSString stringWithUTF8String:name];
//获取value
id value = [aDecoder decodeObjectForKey:key];
[self setValue:value forKey:key];
}
//释放
free(vars);
}
return self;
}
3.调用
- (void)archive{
ZFPerson *p = [ZFPerson new];
p.name=@"Cat";
p.age=18;
//归档路径
NSString *path = [NSString stringWithFormat:@"%@/archiver.plist",NSHomeDirectory()];
//归档
[NSKeyedArchiver archiveRootObject:p toFile:path];
//解档
ZFPerson *p2 = [NSKeyedUnarchiver unarchiveObjectWithFile:path];
NSLog(@"name=%@,age=%d",p2.name,p2.age);
}
