Using pushViewController: animated:

问题

I'm trying to use the pushViewController: animated: with a UIViewController. I have it housed in a UINavigationController with initWithRoot and it still doesn't work.

Here is my code? Am I doing something wrong?

CloudappSettingsViewController *cloud = [[CloudappSettingsViewController alloc] initWithNibName:nil bundle:nil];
        UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:cloud];
        [self pushViewController:nav animated:YES];
        [cloud release];

It always crashes when it gets up to the [self pushViewController:nav animated:YES];

Any ideas? Thanks

回答1:

is "self" a UINavigationController?

It seems you are trying to push the navigation controller, but that is backwards. You should present the navigation controller and push additional views to it.

So the UIView you are in should already be in the nav controller then you would push cloud into that.

回答2:

If this is in your app delegate, just add the UINavigationController as a subview to your app's window. If you want to present the UINavigationController as a modal view controller then do this:

[self presentModalViewController:nav animated:YES];

回答3:

It will crash definitely because you set the nib to nil.

CloudappSettingsViewController *cloud = [[CloudappSettingsViewController alloc] initWithNibName:@"NibName goes here" bundle:nil];

Create a nib and assign it to your view controller.

来源：https://stackoverflow.com/questions/5745541/using-pushviewcontroller-animated

标签

iphone

uiviewcontroller

uinavigationcontroller

push