当UITableView完成滚动时，是否可以通知？ [英] Is it possible to be notified when a UITableView finishes scrolling?

问题描述

我引用了此问题：如何检测UIScrollView已完成滚动

UITablewView是UIScrollView的子类，我的UITableView委托获得





但是，当我调用<$ c $（$）时，会弹出一个（void）scrollViewDidEndDecelerating：（UIScrollView *）scrollView c> - （void）scrollToRowAtIndexPath：（NSIndexPath *）indexPath atScrollPosition：（UITableViewScrollPosition）scrollPosition animated：（BOOL）animated 滚动表，我没有得到 scrollViewDidEndDecelerating 消息。我使用 animated：YES 调用 scrollRowToIndexPath ... 方法。

这是一个错误/ API限制（在iPhone SDK 3.1.3上），或者我缺少另一种方法来做这个？

解决方案

为了防止有人继续追踪这个文件，Apple文档在 scrollToRowAtIndexPath：atScrollPosition：animated：文档中说：

调用此方法不会导致委托接收
scrollViewDidScroll：消息，正如
程序调用的用户界面操作。

I referenced this question: How to detect when a UIScrollView has finished scrolling

UITablewView is a subclass of UIScrollView, and my UITableView delegate does get the - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView message when I scroll the table by hand.

However, when I call - (void)scrollToRowAtIndexPath:(NSIndexPath *)indexPath atScrollPosition:(UITableViewScrollPosition)scrollPosition animated:(BOOL)animated to scroll the table, I don't get the scrollViewDidEndDecelerating message. I am calling the scrollRowToIndexPath... method with animated:YES.

Is this a bug/API limitation (on iPhone SDK 3.1.3) or am I missing another way to do this?

解决方案

Just in case someone is still chasing this one, the Apple docs say the following under the scrollToRowAtIndexPath:atScrollPosition:animated: documentation:

"Invoking this method does not cause the delegate to receive a scrollViewDidScroll: message, as is normal for programmatically-invoked user interface operations."

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