父视图navigationController

发布于 2024-10-18 01:50:15 字数 497 浏览 2 评论 0原文

我有一个视图，它是 tabBarController 的一部分。在此视图中，我有一个带有表格的子视图。单击此表中的单元格时，我想访问父视图的导航控制器。这可能吗？如果可能的话，如何实现？

我以为会这样，

BandDetailViewController *bandDetailViewController = [[BandDetailViewController alloc] initWithNibName:@"BandDetailViewController" bundle:nil];
bandDetailViewController.band = [thisDay objectAtIndex:indexPath.row];

[super.navigationController pushViewController:bandDetailViewController animated:YES];
[bandDetailViewController release];

但是那行不通。

原文

I have a view which is a part of a tabBarController. In this view I have a subview with a table. When clicking a cell in this table, I would like to access the navigationController of the parent view. Is this possible - and if so, how?

I thought it would be

BandDetailViewController *bandDetailViewController = [[BandDetailViewController alloc] initWithNibName:@"BandDetailViewController" bundle:nil];
bandDetailViewController.band = [thisDay objectAtIndex:indexPath.row];

[super.navigationController pushViewController:bandDetailViewController animated:YES];
[bandDetailViewController release];

But that does not work.

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风筝在阴天搁浅。 2024-10-25 01:50:15

当您实例化子视图控制器时，传入对导航控制器（超级控制器）的引用，并将其存储在实例变量中。然后您可以在需要时在子中引用它。我一直在寻找更优雅的解决方案来解决这个问题和类似的问题，但没有成功。传递参考作品，所以我这样做并尝试继续我的生活。

编辑：添加代码示例

在mainVC.m中

 // this might be in didSelectRowForIndexPath:
 SubViewController *subVC = [[SubViewController alloc] init];
 subVC.superNavController = self.navController;
 [self.navigationController pushViewController:subVC animated:YES];

在SubViewController.h中

 @property (nonatomic, retain) UINavigationController *superNavController;

在SubViewController.m中

  @synthesize superNavController;


  // then, wherever you need it, say to pass to a sub-sub-viewController...
  [self.superNavController pushViewController:myNewVC animated:YES];

When you instantiate your sub-view controller, pass in a reference to the navigation controller (super's), and store it in an instance variable. You can then reference it when you need it in the sub. I have been looking for a more elegant solution to this and similar problems, without success. Passing in a reference works, so I do that and try to get on with my life.

EDIT: add code sample

In mainVC.m

 // this might be in didSelectRowForIndexPath:
 SubViewController *subVC = [[SubViewController alloc] init];
 subVC.superNavController = self.navController;
 [self.navigationController pushViewController:subVC animated:YES];

In SubViewController.h

 @property (nonatomic, retain) UINavigationController *superNavController;

In SubViewController.m

  @synthesize superNavController;


  // then, wherever you need it, say to pass to a sub-sub-viewController...
  [self.superNavController pushViewController:myNewVC animated:YES];

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