Is there a way to force a UIView to release a subview?

Say I pass a UIViewController to a UINavigationController like so:

SettingsViewController *settingsRootView = [[S开发者_运维问答ettingsViewController alloc] initWithNibName:@"SettingsViewController" bundle:nil];
    SettingsNavigationController *settingsView = [[SettingsNavigationController alloc] initWithRootViewController:settingsRootView];   
    [settingsRootView release]; 
    [self presentModalViewController:settingsView animated:YES];
    [settingsView release];

I release my retain on the original UIViewController, settingsRootView, but settingsView holds a retain on it. When I dismiss settingsView, it should release itself and all of its children, but for some reason it's not. Is there a way to tell my main application view that it's done with settingsView to force my main view to release settingsView and all of its subviews?

---

To force your settingsView to release any controllers it is managing, call settingsView.viewControllers = nil.

But this should happen automatically when settingsView is released. Place a breakpoint in the dealloc method of your settingsView to ensure it is being released. Make sure dealloc is calling [super dealloc].