scrollViewDidEndScrollingAnimation和scrollViewDidEndDecelerating的区别

#pragma mark - 监听

/**

 *  点击了顶部的标题按钮

 */

- (void)titleClick:(XMGTitleButton *)titleButton

{

    // 修改按钮状态

    self.clickedTitleButton.selected = NO;

    titleButton.selected = YES;

    self.clickedTitleButton = titleButton;

     

    // 移除底部下划线

    [UIView animateWithDuration:0.25 animations:^{

        self.titleUnderlineView.width = titleButton.titleLabel.width;

        self.titleUnderlineView.centerX = titleButton.centerX;

    }];

     

    // 让scrollView滚动到对应的位置(不要去修改contentOffset的y值)

    CGPoint offset = self.scrollView.contentOffset;

    offset.x = titleButton.tag * self.scrollView.width;

    [self.scrollView setContentOffset:offset animated:YES];

   //不是人为拖拽scrollView导致滚动完毕，会调用scrollViewDidEndScrollingAnimation这个方法

}

 

#pragma mark - <UIScrollViewDelegate>

/**

 *  滚动完毕就会调用（如果不是人为拖拽scrollView导致滚动完毕，才会调用这个方法）

 */

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView

{

    int index = scrollView.contentOffset.x / scrollView.width;

    UIViewController *willShowChildVc = self.childViewControllers[index];

     

    // 如果这个子控制器的view已经添加过了，就直接返回

    if (willShowChildVc.isViewLoaded) return;

     

    // 添加子控制器的view

    willShowChildVc.view.frame = scrollView.bounds;

    [scrollView addSubview:willShowChildVc.view];

}

 

/**

 *  滚动完毕就会调用（如果是人为拖拽scrollView导致滚动完毕，才会调用这个方法）

 */

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView

{

    int index = scrollView.contentOffset.x / scrollView.width;

    // 点击对应的按钮

    [self titleClick:self.titleButtons[index]];

     

    // 添加子控制器的view

    [self scrollViewDidEndScrollingAnimation:scrollView];

}