有没有办法取消动画 UITableView/UIScrollView setConte

Is there a way to cancel an animated UITableView/UIScrollView setContentOffset:animated:?(有没有办法取消动画 UITableView/UIScrollView setContentOffset:animated:?)

问题描述

当我的 UITableView 在制作动画时被释放，我的应用程序崩溃了.只要动画完成，应用程序就可以正常运行.下面是点击 UIButton 的结果，它调用 [tableView setContentOffset:offset animated:YES]; 然后闪电般快速点击 backBarButtonItemUITableViewController:

My app is crashing when my UITableView is released whilst animating. The app functions without issue so long as the animation completes. Below is the result of a tap on the UIButton which calls [tableView setContentOffset:offset animated:YES]; and then a lightning quick tap on the backBarButtonItem which pops the UITableViewController:

#0  0x31ec3ebc in objc_msgSend
#1  0x33690248 in -[UIScrollView(UIScrollViewInternal) _scrollViewAnimationEnded]
#2  0x30defa14 in -[NSObject performSelector:withObject:]
#3  0x33690098 in -[UIAnimator stopAnimation:]
#4  0x3368fb7c in -[UIAnimator(Static) _advance:]
...

我从未见过 _scrollViewAnimationEnded 发生崩溃，显然 Google 也没有.我尝试从 UITableViewController 的 - (void)viewWillDisappear:(BOOL)animated 调用 [tableView setContentOffset:offset animated:NO];方法，但这并没有解决问题.

I've never seen a crash on _scrollViewAnimationEnded and apparently neither has Google. I have tried calling [tableView setContentOffset:offset animated:NO]; from the UITableViewController's - (void)viewWillDisappear:(BOOL)animated method, but this did not solve the issue.

在动画制作过程中停止 UITableView 或 UIScrollView 有什么想法吗?

Any ideas for stopping a UITableView or UIScrollView in the midst of animating?

推荐答案

这看起来可能是委托问题.您是否有该表的代表，如果有，当该表存在时是否已解除分配?在释放它之前尝试将你的 tableView 的委托归零.

This looks like it might be a delegate issue. Do you have a delegate for the table, and, if so, is it dealloc'd when the table is? Try nil'ing out your tableView's delegate before releasing it.

[CoreAnimation 在动画时会保留 tableView，所以这可能不是问题.]

[The tableView is retained by CoreAnimation while it's animating, so that's probably not the problem.]

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