以编程方式更改ViewController

navigationController-->ViewControllerA--ViewControllerB(当前显示)。

和导航控制器-->ViewController1-->ViewController2。

我想从ViewControllerB转到ViewController2。

以下是我尝试的:

[self.navigationController popToRootViewControllerAnimated:YES]; // Works fine
AppDelegate app* = [[UIApplication sharedApplication] delegate];
LocationsViewController*  locationsViewController = [[LocationsViewController alloc] initWithNibName:@"LocationsView" bundle:nil];

locationsViewController.title = @"Title";
[self.navigationController pushViewController:locationsViewController animated:YES];

这个自动导航控制器pushViewController不工作。

你怎么解决这个问题?