KVC一句话搞定赋值

- (instancetype)initWithDic:(NSDictionary*)dic{

if (self = [super init]) {

[self setValuesForKeysWithDictionary:dic];
}
return self;
}

如果没有哪个属性，自己定义的而服务器没有这个属性的！
- (void)setValue:(id)value forUndefinedKey:(NSString *)key{

if ([key isEqualToString:@"comment"]) {
NSInteger commentCount = [value integerValue];
_pinLun = [[NSString stringWithFormat:@"%ld",(long)commentCount] copy];
}
NSLog(@"%@",value);
}

comment 是服务器的属性
_pinlun 是自己定义的属性

- (void)setValue:(id)value forUndefinedKey:(NSString *)key{

NSLog(@"=------:%@",key);

if ([key isEqualToString:@"description"]) {
_des = value;
}else if ([key isEqualToString:@"photos"]){

NSArray *photos = (NSArray*)value;
NSMutableArray *appPhotoes = [NSMutableArray array];
[photos enumerateObjectsUsingBlock:^(NSDictionary *dic, NSUInteger idx, BOOL *stop) {
//            1.创建AppPhoto对象
AppPhoto *photo = [AppPhoto appPhotoWithDic:dic];
//            2.将上面的对象添加到appPhotoes中
[appPhotoes addObject:photo];

}];
_appPhotoes = appPhotoes;

}
}