iOS顶部滑动菜单：FDSlideBar 与NinaPagerView

FDSlideBar 是一个顶部滑动菜单，如常见的网易、腾讯新闻等样式。该控件支持自定颜色、字体等多种样式风格。菜单间切换流畅，具有较好的体验性。下部的内容展示经过挣 扎，最后选择了 UITableView 实现，从而很好地解决了ScrollView的内存问题，也获得了很好地原生滑动效果。 

  FDSlideBar *sliderBar = [[FDSlideBar alloc] init];
    sliderBar.backgroundColor = [UIColor colorWithRed:0 / 255.0 green:128 / 255.0 blue:128 / 255.0 alpha:1.0];

    // Init the titles of all the item
    sliderBar.itemsTitle = @[@"要闻", @"视频", @"上海", @"娱乐", @"体育NBA", @"财经", @"科技", @"社会", @"军事", @"时尚", @"汽车", @"游戏", @"图片", @"股票"];

    // Set some style to the slideBar
    sliderBar.itemColor = [UIColor whiteColor];
    sliderBar.itemSelectedColor = [UIColor orangeColor];
    sliderBar.sliderColor = [UIColor orangeColor];

    // Add the callback with the action that any item be selected
    [sliderBar slideBarItemSelectedCallback:^(NSUInteger idx) {
        [self.tableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:idx inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:NO];
    }];
    [self.view addSubview:sliderBar];
    _slideBar = sliderBar;