In my applicationDidFinishLaunching I set up a UINavigationController:

- (void)applicationDidFinishLaunching:(UIApplication *)application { 
    navController = [[UINavigationController alloc] init];
    [[navController navigationBar] setFrame:CGRectMake(0.0,0.0,320.0,20.0)];
...
}

As you can see, I am trying to make the navigation controller's height 20px. However, this is not working. I would imagine setFrame must be the correct function but I am not calling it in the right place. I realize that other questions on SO are similar to mine, but I think setting the navigationBar height should be possible if it responds to setFrame...right?

Also, anyone know the default height of the navigationBar?

Thanks!