在dismissModalViewControllerAnimated之后调用popToRootViewControllerAnimated

我正在工作的应用程序，我调用presentModalViewController ，一旦完成（调用dismissModalViewControllerAnimated:YES ）它应立即调用popToRootViewControllerAnimated 。

但问题是dismissModalViewControllerAnimated:YES工作正常但popToRootViewControllerAnimated不能正常工作。

代码如下所示：

 [self.navigationController dismissModalViewControllerAnimated:YES] ; [self.navigationController popToRootViewControllerAnimated:YES]; 

Answer 1

尝试这样的事情：

 [self.navigationController dismissModalViewControllerAnimated:YES] ; [self performSelector:@selector(patchSelector) withObject:nil afterDelay:0.3]; -(void)patchSelector{ [self.navigationController popToRootViewControllerAnimated:YES]; } 

它不是那么整洁但它应该工作。

更新：你应该使用

  [self dismissModalViewControllerAnimated:YES]; 

代替

  [self.navigationController dismissModalViewControllerAnimated:YES] ; 

呈现模态的对象是视图控制器，而不是导航控制器。

Answer 2

如果你有一个带有UIViewControllers堆栈的导航控制器：

 [self dismissModalViewControllerAnimated:YES]; [(UINavigationController*)self.parentViewController popToRootViewControllerAnimated:YES]; //UIViewController *vc = [[UIViewController new] autorelease]; //[(UINavigationController*)self.parentViewController pushViewController:vc animated:YES]; 

假设，该视图控制器中调用的模态视图控制器具有navigationController。

Answer 3

我想，你没有打电话给

 [self.navigationController popToRootViewControllerAnimated:YES]; 

在目标模态viewcontroller中。 检查一下。

Answer 4

我遇到了类似的事情。 你需要首先复制你的self.navigationcontroller并保留自己，所以当你调用第二个pop时，仍然存在对NC的引用，你仍然存在。

  // 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]; [navController pushViewController:someViewController animated:NO]; 

请参阅： 如何从UINavigationController中弹出视图并在一次操作中将其替换为另一个视图？