Iphone 弹出到项目的第一个视图控制器

我有一个

UINavigationController

。我在上面加载了一个

presentmodalviewcontroller

。我在

presentmodalviewcontroller

上再推两个视图控制器。如果我需要移动到我的第一个视图控制器，应该怎么做

编辑：我还在堆栈顶部的

UIViewController

上加载一些

UIView

。我已经成功地删除了它

我试过了

 [self.navigationController popToRootViewControllerAnimated:YES];
 [self.navigationController dismissModalViewControllerAnimated:YES];  
 [self.navigationController popToViewController:[self.navigationController.viewControllers   objectAtIndex:0] animated:YES]; 

但它仍然不起作用

这就是我添加每个视图控制器的方式

 FirstViewController *firstViewController = 
 [[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];

 UINavigationController *navcontrol =[[UINavigationController alloc]initWithRootViewController:firstViewController];
 [self presentModalViewController:navcontrol animated:YES];
 [navcontrol release];

SecondViewController *secondViewController = [[SecondViewController alloc]init] ;
[self.navigationController pushViewController: secondViewController animated:YES];
        [secondViewController release];

ThirdViewController *thirdViewController = [[ThirdViewController alloc] init];
[self.navigationController pushViewController: thirdViewController animated:YES];
[thirdViewController release];

第一视图控制器

 FirstViewController *firstViewController = 
 [[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];

 UINavigationController *navcontrol =[[UINavigationController alloc]initWithRootViewController:firstViewController];
 [self presentModalViewController:navcontrol animated:YES];
 [navcontrol release];

SecondViewController *secondViewController = [[SecondViewController alloc]init] ;
[self.navigationController pushViewController: secondViewController animated:YES];
        [secondViewController release];

ThirdViewController *thirdViewController = [[ThirdViewController alloc] init];
[self.navigationController pushViewController: thirdViewController animated:YES];
[thirdViewController release];

第二视图控制器

 FirstViewController *firstViewController = 
 [[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];

 UINavigationController *navcontrol =[[UINavigationController alloc]initWithRootViewController:firstViewController];
 [self presentModalViewController:navcontrol animated:YES];
 [navcontrol release];

SecondViewController *secondViewController = [[SecondViewController alloc]init] ;
[self.navigationController pushViewController: secondViewController animated:YES];
        [secondViewController release];

ThirdViewController *thirdViewController = [[ThirdViewController alloc] init];
[self.navigationController pushViewController: thirdViewController animated:YES];
[thirdViewController release];

第三视图控制器

 FirstViewController *firstViewController = 
 [[[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil] autorelease];

 UINavigationController *navcontrol =[[UINavigationController alloc]initWithRootViewController:firstViewController];
 [self presentModalViewController:navcontrol animated:YES];
 [navcontrol release];

SecondViewController *secondViewController = [[SecondViewController alloc]init] ;
[self.navigationController pushViewController: secondViewController animated:YES];
        [secondViewController release];

ThirdViewController *thirdViewController = [[ThirdViewController alloc] init];
[self.navigationController pushViewController: thirdViewController animated:YES];
[thirdViewController release];

嗯。我明白了

    myAppDelegate *appDelegate = (myAppDelegate*)[UIApplication sharedApplication].delegate;

    [appDelegate.navigationController dismissModalViewControllerAnimated:YES];

---

如果我说答案是-popToRootViewController:animated，你会用手掌吗？我试过[self.navigationController popToRootViewControllerAnimated:YES]；[self.navigationController dismissModalViewControllerAnimated:是]；[self.navigationController popToViewController:[self.navigationController.ViewController对象索引：0]已设置动画：是]；但它仍然不起作用为什么不尝试推送到firstViewController而不是这样做？我不想创建一个新实例可以显示如何将ViewController放置在导航堆栈上的代码吗？