如果导航控制器包含 TableView 作为根，如何将 ViewController 添加到导航控制器？

Question

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.

---

有关您编写的代码问题的问题必须在问题本身中描述具体问题 - 并包含有效代码以重现该问题。请参阅 SSCCE.org 获取指导。

10 年前已关闭。

Answer 1

好的，所以我首先向您解释一下您做错了什么：

// You're not allocating the view here.
AddProjectViewController *nextController = addProjectViewController;
// When allocated correctly above, you can simple push the new controller into view
[self.navigationController pushViewController: (UIViewController *)addProjectViewController animated:YES];

推送的视图控制器将自动继承超级（推送它的视图控制器）导航栏（这意味着您可以在子级中调用 self.navigationController视图控制器，因为 UINavigationController 只是 UIViewController 的子类（UITableViewController 也是如此），

这就是您需要做的：

// Allocate AddProjectViewController
AddProjectViewController *addProjectViewController = [[AddProjectViewController alloc] init];
// Adds the above view controller to the stack and pushes it into view
[self.navigationController pushViewController:addProjectViewController animated:YES];
// We can release it again, because it's retained (and autoreleases in the stack). You can also choose to autorelease it when you allocate it in the first line of code, but make sure you don't call release on it then!
[addProjectViewController release];

但是，对于您想要做的事情，最好以模态方式呈现视图控制器，这意味着您必须将其保存在导航控制器中。具体方法如下：

// Allocate AddProjectViewController
AddProjectViewController *addProjectViewController = [[AddProjectViewController alloc] init];
// Create a navigation controller
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:addProjectViewController];
// Release the view controller that's now being retained by the navigation controller
[addProjectViewController release];
// Adds the above view controller to the stack and present it modally (slide from bottom)
[self presentModalViewController:navigationController animated:YES];
// Release the navigation controller since it's being retained in the navigation stack
[navigationController release];

请注意，您需要在 AddProjectViewController 类中创建 UIBarButtonItems

我已更新您的代码并将其上传到此处： http://dl.dropbox.com/u/5445727/Zum.zip

希望它有所帮助，您需要查看此处的评论，我没有将它们转移到你的项目中，祝你好运:)