[英]tableview - unrecognized selector didSelectRowAtIndexPath
I have been having an issue with my app crashing on selecting something in the tableView. 我在选择tableView中的某个应用程序时遇到了崩溃的问题。 This is not 100% reproducible, but it happens relatively often.
这不是100%可重复的,但它相对经常发生。
What happens is inside my EventListViewController class (a subclass of UITableViewController), I overwrite the didSelectRowAtIndexPath function because I am using a search bar in this class as well, and I want it to only select when you are not searching. 发生了什么事在我的EventListViewController类(UITableViewController的子类)内部,我覆盖了didSelectRowAtIndexPath函数,因为我也在此类中使用了搜索栏,并且希望仅在不搜索时才选择它。
The code looks like this: 代码如下:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(!searching)
[super tableView:tableView didSelectRowAtIndexPath:indexPath];
}
However, when it crashes, I break on exception and this is the message I get, on the line that calls the super function: 但是,当它崩溃时,我中断了异常,这是在调用super函数的那一行上得到的消息:
[EventListViewController tableView:didSelectRowAtIndexPath:]: unrecognized selector sent to instance 0xa648e50
I printed out some stuff on the debugger and it all looks fine to me: 我在调试器上打印了一些东西,对我来说一切都很好:
(lldb) po 0xa648e50
(int) $1 = 174362192 <EventListViewController: 0xa648e50>
(lldb) po self
(EventListViewController *) $2 = 0x0a648e50 <EventListViewController: 0xa648e50>
(lldb) po tableView
(UITableView *) $3 = 0x070fd400 <UITableView: 0x70fd400; frame = (0 0; 320 367); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x6e46750>; contentOffset: {-0, -0}>
(lldb) po indexPath
(NSIndexPath *) $4 = 0x06e8caf0 <NSIndexPath 0x6e8caf0> 2 indexes [1, 1]
(The tableView has 2 sections,and the second section has 2 entries) (tableView有2个部分,第二个部分有2个条目)
Anyone have any Idea what is happening? 任何人都知道发生了什么事吗? let me know if you need any more information.
让我知道您是否需要更多信息。
Note: after more investigation I have found that this is 100 % reproducible with the following steps: 1: load the app, and click on either of the two entries. 注意:经过更多调查,我发现通过以下步骤可以100%重现该代码:1:加载应用程序,然后单击两个条目之一。 2: Go back to the tableView controller 3: tap BELOW both of the entries, in the white space where there shouldn't be a cell The app will crash, but notice that the indexPath doesn't say its trying to select a cell that is outside the bounds of the tableView, just that the tableView didSelectRowAtIndexPath method doesn't exist
2:返回tableView控制器3:在不应该存在单元格的空白处,点击两个条目下面的应用程序将崩溃,但请注意indexPath并未说它试图选择一个单元格在tableView的边界之外,只是tableView didSelectRowAtIndexPath方法不存在
The call to super
in tableView:didSelectRowAtIndexPath:
is unnecessary. 在
tableView:didSelectRowAtIndexPath:
对super
的调用是不必要的。 If I remember correctly, UITableViewController
does not provide a default implementation of that method. 如果我没记错的话,
UITableViewController
不提供该方法的默认实现。 Thus, your call to super results in a crash. 因此,您对super的调用会导致崩溃。
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