Я быстро написал следующий класс, и показ / скрытие вкладок в UITabBarController работало как по волшебству:
TabBarDesigner.h
#import <Foundation/Foundation.h>
@interface TabBarDesigner : NSObject
{
}
+(void) setTabBarController:(UITabBarController *)tabBarController
items:(NSArray *)tabBarItems
viewControllers:(NSArray *)viewControllers;
+(void) removeItemsInRange:(NSRange) range;
@end
TabBarDesigner.m
#import "TabBarDesigner.h"
static NSArray *_tabBarItems = NULL;
static NSArray *_viewControllers = NULL;
static UITabBarController *_tabBarController = NULL;
@implementation TabBarDesigner
+(void) setTabBarController:(UITabBarController *)tabBarController
items:(NSArray *)tabBarItems
viewControllers:(NSArray *)viewControllers
{
if (tabBarItems && viewControllers && tabBarController)
{
if ([tabBarItems count] == [viewControllers count])
{
[_tabBarItems release];
[_viewControllers release];
_tabBarItems = [tabBarItems copy];
_viewControllers = [viewControllers copy];
_tabBarController = tabBarController;
}
}
}
+(void) removeItemsInRange:(NSRange) range
{
if (_tabBarController)
{
if ( range.location < ([_tabBarItems count] - 1) )
{
if ( (range.length + range.location) < [_tabBarItems count] )
{
NSMutableArray *tabBarItems = [_tabBarItems mutableCopy];
[tabBarItems removeObjectsInRange:range];
NSMutableArray *viewControllers = [_viewControllers mutableCopy];
[viewControllers removeObjectsInRange:range];
[_tabBarController setViewControllers:viewControllers];
NSUInteger i;
for (i = 0; i< [viewControllers count]; i++)
{
UIViewController *vC = [viewControllers objectAtIndex:i];
vC.tabBarItem.image = [[tabBarItems objectAtIndex:i] image];
vC.tabBarItem.title = [[tabBarItems objectAtIndex:i] title];
vC.tabBarItem.tag = [[tabBarItems objectAtIndex:i] tag];
}
[tabBarItems release];
[viewControllers release];
}
}
}
}
@end
Пример использования этого класса:
В вашем MyAppDelegate.m
#import "TabBarDesigner.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[TabBarDesigner setTabBarController:_tabBarController
items:[_tabBarController.tabBar items]
viewControllers:[_tabBarController viewControllers]];
// remove the first 3 tabs
[TabBarDesigner removeItemsInRange:NSMakeRange(0,3)];
// show all tabs
[TabBarDesigner removeItemsInRange:NSMakeRange(0,0)];
// continue with your code
}
Ура!