kvc 定义 model

//字典类型

NSDictionary *dictionary = [NSDictionary dictionaryWithObjectsAndKeys:@"雨松MOMO",@"name",@"15810463139",@"number", nil];

NSObject *object = [dictionary objectForKey:@"name”];

//kvc 定义 model

-(instancetype)initWithDictionary:(NSDictionary *)dict
 {
    if (self = [super init]) {
//        _answer = dict[@"answer"];
//        _icon = dict[@"icon"];
//        _title = dict[@"title"];
//        _options = dict[@"options”];
        //使用KVC的方式把字典数据直接灌入数据模型
        [self setValuesForKeysWithDictionary:dict];
        _answerCount = _answer.length;
    }
    return self;
}

//指定初始化 与 类方法

+(instancetype)questionWithDictionary:(NSDictionary *)dict{

    return [[self alloc] initWithDictionary:dict];

}
//类方法初始化 与 指定初始化//            QYQuestion *question = [QYQuestion questionWithDictionary:dict];
            QYQuestion *question = [[QYQuestion alloc]  initWithDictionary:dict];

//block 块儿
@interface QYAnswerView : UIView//声明 block@property(strong, nonatomic)void(^answerBtnAction)(UIButton *btn);
//运用block 传值-(void)btnClick:(UIButton *)sender{    if (_answerBtnAction) {        _answerBtnAction(sender);    }}
//block 实现 __weak ViewController *weakSelf = self;    _answerView.answerBtnAction = ^(UIButton *btn){        [weakSelf answerBtnClick:btn];    };