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实现思路如下：
1.利用UIScrollViewDelegate方法来实现
2.scrollView滚动代理 - (void)scrollViewDidScroll:(UIScrollView *)scrollView;
3.scrollView滑动结束代理 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
4.scrollView滚动停止代理 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
[self setPostBtnDisplayWithScrolling:scrollView.isDragging||scrollView.isDecelerating];
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{
[self setPostBtnDisplayWithScrolling:scrollView.isDragging&&scrollView.isDecelerating];
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
[self setPostBtnDisplayWithScrolling:scrollView.isTracking&&scrollView.isDragging&&scrollView.isDecelerating];
}
好了，也没什么可以详细讲的了，喜欢的朋友点颗❤️呗...
