仿今日头条切换界面

下面这个方法是最重要的

     -(void)addChildVC
    {
  ///self.cateNameArray是滑动条的标题个数
for (int i = 0; i< self.cateNameArray.count; i++) {

GoodsCeshiViewController *ceshiVC = [[GoodsCeshiViewController alloc]init];

   // NSLog(@"bb%@",self.cateIDArray[i + 1]);
    ceshiVC.tag = self.cateIDArray[i];
    ceshiVC.tagStr = [NSString stringWithFormat:@"%d",i];
    
[self addChildViewController:ceshiVC];
    
}
  }