发送带参数的通知

[[NSNotificationCenter defaultCenter] postNotificationName:kCategorySelectNotify object:@(tap.view.tag)];


[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(selectCategory:) name:kCategorySelectNotify object:nil];

- (void)selectCategory:(NSNotification *)notify {
    NSNumber *selectIndex = notify.object;
    [self realVm].categoryIndex = selectIndex.integerValue;
    [self.contentTableView.mj_header beginRefreshing];
    [self.menu selectIndex:selectIndex.integerValue];
}