iphone - 如何在NavigationController上弹出UIViewController并同时推送UIView

Question

我在 UINavigationController 上遇到问题...

我有这个层次结构

UINavigationController
 |- root controller
 |- ViewController A

我在ViewController A中有一个按钮做某事并插入ViewController B ，但我想删除 ViewController A添加ViewController B之前

所以处理后的层次结构是这样的

UINavigationController
 |- root controller
 |- ViewController B

它应该是从 ViewController A 滑动的至 ViewController B ，但如果按返回键，则会返回 root Controller

提前谢谢你。

Answer 1

您应该使用 UINavigationController 的 setViewControllers 方法，并简单地将 root 和 viewController B 添加为数组

//get the existing navigationController view stack
NSMutableArray* newViewControllers = [NSMutableArray arrayWithArray:self.navigationController.viewControllers];

//drop the last viewController and replace it with the new one!
ViewControllerB *childController = [[ViewControllerB alloc] initWithNibName:@"ViewControllerB" bundle:nil];
[newViewControllers replaceObjectAtIndex:newViewControllers.count-1 withObject:self];

//set the new view Controllers in the navigationController Stack
[self.navigationController setViewControllers:newViewControllers animated:YES];