- (void)encodeWithCoder:(NSCoder *)aCoder
{
NSLog(@"%s",__func__);
unsigned int count = 0;
Class cls = self.class;
Ivar * varList = NULL;
objc_property_t * proList = NULL;
while (cls!=[NSObject class])
{
BOOL isSelfClass = (cls == self.class);
if(isSelfClass)
{
varList = class_copyIvarList(cls, &count);
}else
{
proList = class_copyPropertyList(cls, &count);
}
for (int i = 0; i < count; i++)
{
const char * name = isSelfClass?ivar_getName(varList[i]):property_getName(proList[i]);
NSString * key = [NSString stringWithFormat:@"%s",name];
NSArray * filters = @[@"superclass", @"description", @"debugDescription", @"hash"];
if ([self valueForKey:key] && [filters containsObject:key] == NO) {
[aCoder encodeObject:[self valueForKey:key] forKey:key];
}
}
if(varList==NULL)
{
free(varList);
varList = NULL;
}else if (proList==NULL)
{
free(proList);
proList = NULL;
}
cls = class_getSuperclass(cls);
}
}
原文：http://www.cnblogs.com/VzhanggengD/p/6484587.html