UIView没有在两个标题视图中显示 [英] UIView not showing in both header views

问题描述

我正在开发一个 iPad 应用程序。出于某些原因，我需要在同一个视图控制器中显示两个tableviews 。我在 xib 中创建了 UIView 并连接了一个 outlet 到那个视图控制器。我需要在这两个tableviews中将该视图显示为 tableHeaderView 。当我尝试将该视图分配给两个标题视图时，它仅显示在第二个表视图中。我希望在那里是该视图的单个实例。因此它仅在我最后指定的视图中显示。我怎么能克服这个？任何帮助，将不胜感激。

I am developing an iPad application. For some reasons, I need to show a two tableviews in the same view controller. I have created a UIView in a xib and connected a outlet to that view controller. I need to show that view in those two tableviews as a tableHeaderView. When I try to assign that view to both header views, it is showing only in the second tableview.I hope there is a single instance for that view. So it is showing on only in the view, which I assigned last. How could I overcome this?? Any help would be appreciated.

这是我的代码。

[energyTableView setTableHeaderView:tableHeader];
[maintenanceTableView setTableHeaderView:tableHeader];

@CodeBySteveZ

@CodeBySteveZ

正如他所说，我创建了一个xib并尝试过。我仍然无法得到解决方案。我做错了吗？这就是我尝试的方式。

As he said, I created an xib and tried. And still I can't get the solution. Am I doing anything wrong??here it is how I tried.

NSArray *topLevelObjects = [[NSBundle mainBundle]loadNibNamed:@"tableHeaderCell" owner:nil options:nil];

[energyTableView setTableHeaderView:[topLevelObjects objectAtIndex:0]];
[maintenanceTableView setTableHeaderView:[topLevelObjects objectAtIndex:0]];

我认为这也和以前一样。

I think this is also a same thing as I did before.

推荐答案

您必须创建tableHeader的另一个实例。 UIView一次只能存在于一个可视子树中。使用IB，您可以复制元素并创建它的2个实例。或者，如果您使用该元素创建单独的xib，则可以通过代码将该特定xib加载两次，每个表头一次。

You'll have to create another instance of the tableHeader. A UIView can only live in one visual sub-tree at a time. Using IB you could copy the element and create 2 instances of it. Or if you create a separate xib with that just element you could load that particular xib twice via code, once for each table header.

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