问题描述

是否可以从导航堆栈中弹出一个视图，然后将另一个视图直接推送到它上面?

is is possible to pop a view off the navigation stack and then push another straight onto it?

我正在尝试为此部分实现平面层次结构，并希望有一个分段控制器，但我无法使分段控制器看起来像我想要的任何东西，因此我尝试使用导航控制器.

I'm trying to implement a flat hierarchy for this section and would like to have a segmented controller but I can't make the segmented controller look anything liked I want, hence why I'm trying to use the navigation controller.

当一个按钮被点击时，我执行了这段代码:

When a button is clicked I executed this code:

[[self navigationController] popViewControllerAnimated:YES];
        MapsViewController *aViewController = [[MapsViewController alloc]
                                               initWithNibName:@"MapsViewController" bundle:nil];
[self.navigationController pushViewController:aViewController animated:NO];
[aViewController release];

它弹出正常，但没有任何推动的迹象！任何帮助将不胜感激.

It's popping off ok but theres no sign of any pushing! Any help would be appreciated.

推荐答案

 MapsViewController *aViewController = [[MapsViewController alloc]
                                        initWithNibName:@"MapsViewController" bundle:nil];
     // locally store the navigation controller since
     // self.navigationController will be nil once we are popped
 UINavigationController *navController = self.navigationController;

     // retain ourselves so that the controller will still exist once it's popped off
 [[self retain] autorelease];

     // Pop this controller and replace with another
 [navController popViewControllerAnimated:NO];//not to see pop

 [navController pushViewController:aViewController animated:YES];//to see push or u can change it to not to see.

或者

 MapsViewController *aViewController = [[MapsViewController alloc]
                                        initWithNibName:@"MapsViewController" bundle:nil];


UINavigationController *navController = self.navigationController;

//Get all view controllers in navigation controller currently
NSMutableArray *controllers=[[NSMutableArray alloc] initWithArray:navController.viewControllers] ;

//Remove the last view controller
[controllers removeLastObject];

//set the new set of view controllers
[navController setViewControllers:controllers];

//Push a new view controller
[navController pushViewController:aViewController animated:YES];

这篇关于以相同的动作弹出和推送视图控制器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持跟版网！