<NSCoding>
当类中包含其他类似, 其他类也实现NSCoding就行
代码语言：javascript复制#pragma mark - 解档
- (id)initWithCoder:(NSCoder *)decoder {
if (self = [super init]) {
unsigned int count = 0;
Ivar *ivar = class_copyIvarList([self class], &count);
for (int i = 0; i < count; i ) {
Ivar iva = ivar[i];
const char *name = ivar_getName(iva);
NSString *strName = [NSString stringWithUTF8String:name];
// 进行解档取值
id value = [decoder decodeObjectForKey:strName];
[self setValue:value forKey:strName];
}
free(ivar);
}
return self;
}
#pragma mark - 归档
- (void)encodeWithCoder:(NSCoder *)encoder {
unsigned int count;
Ivar *ivar = class_copyIvarList([self class], &count);
for (int i = 0; i < count; i ) {
Ivar iv = ivar[i];
const char *name = ivar_getName(iv);
NSString *strName = [NSString stringWithUTF8String:name];
id value = [self valueForKey:strName];
// 进行归档赋值
[encoder encodeObject:value forKey:strName];
}
free(ivar);
}NSCoder 是一个抽象类，抽象类不能被实例话，只能提供一些想让子类继承的方法。
子类: NSKeyedArchiver (序列化) 从二进制流读取对象。
子类: NSKeyedUnarchiver (反序列化) 把对象写到二进制流中去。
代码语言：javascript复制// 序列化
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *filePath = [path stringByAppendingString:@"/holderModel"];
[NSKeyedArchiver archiveRootObject:_holderModel toFile:filePath];
// 反序列化
NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
NSString *filePath = [path stringByAppendingString:@"/holderModel"];
_holderModel = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];NSUserDefault存Model
代码语言：javascript复制// Model 实现`NSCoding`协议
// 存
NSData *data = [NSKeyedArchiver archivedDataWithRootObject:_standardPreferenceModel];
[[NSUserDefaults standardUserDefaults] setObject:data forKey:kTicPods2StandardPreferenceModel];
[[NSUserDefaults standardUserDefaults] synchronize];
// 取
NSData *data = [[NSUserDefaults standardUserDefaults] objectForKey:kTicPods2StandardPreferenceModel];
_standardPreferenceModel = [NSKeyedUnarchiver unarchiveObjectWithData:data];
return _standardPreferenceModel;<NSCopying>
NSCoping好像没有什么快捷的方法, 只能一个一个copy
当类中包含其他类似, 其他类也实现NSCoping就行
代码语言：javascript复制- (id)copyWithZone:(NSZone *)zone {
HolderBean *holder = [[[self class] allocWithZone:zone] init];
holder.holderId = _holderId;
holder.choose = _choose;
holder.avatar = [_avatar copy];
holder.gender = [_gender copyWithZone:zone];
holder.relation = [_relation copyWithZone:zone];
return holder;
}
