iOS中对象属性的归档和解档(runtime+KVC)快捷解决方案

//iOS中对象属性的归档和解档(runtime+KVC)快捷解决方案
//使用方便省时 有需要的可以抽取为宏 或者保存为代码块 更为快捷
#import "MyModel.h"
#import <objc/runtime.h>

@implementation MyModel

//归档
- (void)encodeWithCoder:(NSCoder *)encoder
{
unsigned int count;
Ivar *ivars = class_copyIvarList([MyModel class], &count);
for (int i=0; i<count; i++) {
Ivar ivar = ivars[i];
const char *name = ivar_getName(ivar);
NSString *strName = [NSString stringWithUTF8String:name];
//利用KVC取值
id value = [self valueForKey:strName];
[encoder encodeObject:value forKey:strName];
}
free(ivars);
}
//解档
- (id)initWithCoder:(NSCoder *)decoder
{
if (self = [super init]) {
unsigned int count = 0;
//获取类中所有成员变量名
Ivar *ivars = class_copyIvarList([MyModel class], &count);
for (int i = 0; i<count; i++) {
Ivar ivar = ivars[i];
const char *name = ivar_getName(ivar);
NSString *strName = [NSString stringWithUTF8String:name];
//进行解档取值
id value = [decoder decodeObjectForKey:strName];
//利用KVC对属性赋值
[self setValue:value forKey:strName];
}
free(ivars);
}
return self;
}
@end