iOS block用作属性封装代码

@property (copy, nonatomic) void (^actionBlock)();

@property (copy, nonatomic) void (^actionWithPapameterBlock)(int papameter);

@property (copy,nonatomic) NSString *(^actionToReturnStirng)();

- (void)selectedWithObjWithIndex:(void(^)(NSInteger index))callBack;