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如何定义 someViewIWantToDisableOtherFor和 anotherViewIWantDisabled在下面的代码中？iphone应用程序的tabbar
id currentlySelected; //This will hold the address of the selected view
id dontAllowSelection; //This will hold the address of the Denied view
- (BOOL)tabBarController:(UITabBarController *)tabBarControllers shouldSelectViewController:(UIViewController *)viewController
{
if (dontAllowSelection != nil &&
dontAllowSelection == viewController)
{
return NO;
}
currentlySelected = viewController;
if (currentlySelected == someViewIWantToDisableOtherFor)
{
dontAllowSelection = anotherViewIWantDisabled;
}
else
{
dontAllowSelection = nil;
}
return YES;
}