Tab Bar Control and the Default "More" Behavior

Question

I've got a client who wants an app with 8 tabs. The only problem is that they don't like the default "more" behavior with the tableviewcontroller containing the extra tab content. What they want is to hit "more" to see the next four tabs replace the first four and then to toggle back if it's hit again.
There are a few ways to do this, I guess. I could build a second viewcontroller/tabcontroller that comes on or leaves when "more" is touched. Is there a surer way of doing this? I'm sure I'm missing something basic, but I've googled my brains out on this one and just can't see it.

Answer 1

You could use one TabbarController with 8 ViewControllers, and rotate them when the More tab is tapped:
- (BOOL)tabBarController:(UITabBarController *)tbc shouldSelectViewController:(UIViewController *)vc {
if (vc == tbc.moreNavigationController) {
NSMutableArray *newVCs = [[NSMutableArray arrayWithCapacity:8] retain];
for (int i = 0; i < 8; i++) {
[newVCs addObject:[tbc.viewControllers objectAtIndex:(i + 4) % 8]];
tbc.viewControllers = newVCs;
[newVCs release];
return NO;
} else {
return YES;