iOS-如何让SPPageMenu滑动

@interface yourFatherViewController ()<SPPageMenuDelgeate,UIScrollViewDelegate>
@property (nonatomic,strong) UIScrollView *scrollView; //懒加载一个可滑动的ScrollView
@property (nonatomic,strong) SPPageMenu *pageMenu;
@property (nonatomic,strong) MutableArray *myChildrensViewController
@end

- (void)setupPageMenu {
    SPPageMenu 初始化你的SPPage类型这里不做多解释
    重要的是接下来的这段代码
    [pageMenu setItem:@[@"分类vc1",@"分类vc2"];
    pageMenu.delegate = self;
    pageMenu.bridgeScrollView = self.scrollView //所有分类页的可滑动基础都依靠这一句
    self.scrollView.contentOffSet = CGPointMake(宽度*self.pageMenu.selectedIndex,0)
    //可滑动页面的数量取决于setItem数组有多少个元素
    self.scrollView.contentSize = CGRectMaek(self.dataArr.count*宽度)
    //同理
    _pageMenu = pageMenu;
    [self.view addSubView:pageMenu];
    [self.view addSubView:self.scrollView];
    
    UIViewController *vc1 = [[UIViewController alloc]init];
    UIViewController *vc2 = [[UIViewController alloc]init];
    
    if self.pageMenu.selectedIndex < self.myChildrensViewController.count {
        //选择一个MainVC作为SPPageMenu的主页
        UIViewController *basicView = [[UIViewController alloc]init];
        [self.scrollView addSubView:basicView];
        basicView.frame = CGRectMake(kScreenWidth * self.menuPage.selectedIndex, 0 ,kScreenWidth,kScreenHeight)
        self.scrollView.contentOffset = CGPointMake(ScreenWidth*self.pageMenu.selectedItemIndex, 0);
        self.scrollView.contentSize = CGSizeMake(self.dataArr.count*ScreenWidth, 0);
        //初始化basicView的Frame
        //设置self.contentView的内容页宽度
        //设置self.contentView的内容偏移大小
    }
    
}

- (void)pageMenu:(SPPageMenu *)pageMenu itemSelectedFromIndex:(NSInteger)fromIndex toIndex:(NSInteger)toIndex {
 NSLog(@"%zd------->%zd",fromIndex,toIndex){
     _index = toIndex;
     if (self.scrollView.isDragging){ //判断是否在拖动
         if (labs(toIndex - fromIndex > = 2)) //如果fromIndex 于 toIndex 的差大于二
         //说明跨界移动VC，此时不显示动画
         [self.scrollView setContentOffSet:CGPointMake];
     }
     //数组越界判断
     if (你的子类数量.count <=  toIndex){return} //直接return
     yourVC = 你的子类[index];
     [[yourVC alloc]init];
     [_scrollView addSubView:yourVC.view]; //自此父级页面完成
 }