为什么我的popToRootViewControllerAnimated没有被调用？

Question

我甚至试图在调用popToRootViewControllerAnimated之前实现一个延迟，但是这也没有好处。它只是不会被调用。

-(IBAction) btnSignOut{ 

    [[self tabBarController]setSelectedIndex:0]; 

    [[self navigationController]popToRootViewControllerAnimated:NO];//DOES NOT GET CALLED 




    Overview *overviewController = [[Overview alloc] initWithNibName:@"Overview" bundle:nil]; 

    //Lets place OverView in navController 
    UINavigationController * navController = [[UINavigationController alloc] initWithRootViewController:overviewController]; 



// [[self navigationController] popToViewController:ComposeViewController animated:YES]; 

    //Now lets display it 
    [self.tabBarController presentModalViewController:navController animated:YES]; 

    [navController release]; 
    [overviewController release]; 


} 

Answer 1

这似乎是[自我navigationController]不包含任何视图，弹出