Question

我正在使用我调用presentModalViewController的应用程序，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无效。

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有用。

<强>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

如果你的导航控制器有一堆UIViewControllers：

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

假设，视图控制器中调用了模态视图控制器的导航控制器。

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，仍然有对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：How can I pop a view from a UINavigationController and replace it with another in one operation?

在dismissModalViewControllerAnimated之后调用popToRootViewControllerAnimated

4 个答案: