Combining a TabBar and Navigation Controller IOS8 - uinavigationcontroller

Question

I'm new to iOS and I have troubles to display a navigation controller in my taBbar after Xcode 6 update.
With Xcode 5, it was working perfectly but now on the simulator I get an error message "Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Pushing a navigation controller is not supported'" and the app crashes.
Here is my code:
**appDelegate.m**
- (BOOL) application:(UIApplication *)application didFinishLaunchingWithOptions:
(NSDictionary *)launchOptions{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.backgroundColor =[UIColor whiteColor];
[self.window makeKeyAndVisible];
*// tabBar items*
ItemUnViewController *itemUnViewController = [[ItemUnViewController alloc]
initWithNibName:nil
bundle:NULL];
ItemDeuxViewController *itemDeuxViewController = [[ItemDeuxViewController alloc]
initWithNibName:nil
bundle:NULL];
*//tabBar*
UITabBarController *tabBarController = [[UITabBarController alloc] init];
[tabBarController setViewControllers:#[itemUnViewController,itemDeuxViewController]];
*//setting tabBar as rootView*
self.window.rootViewController = tabBarController;
*// navigation Controllers*
UINavigationController *itemUnNavigationController =
[[UINavigationController alloc]
initWithRootViewController:itemUnViewController];
UINavigationController *itemDeuxNavigationController =
[[UINavigationController alloc]
initWithRootViewController:itemDeuxViewController];
*//Combining tabBar and Navigation Controllers*
[tabBarController setViewControllers:#
[itemUnNavigationController,itemDeuxNavigationController]];
return YES;
}
I even tried this way http://blog.rifkilabs.net/exploring-navigation-controller-and-tab-bar-controller.html but i get the same error message.
Thanks for your help.

Answer 1

tabBar_Controller = [[UITabBarController alloc]init];
[tabBar_Controller setDelegate:self];
ViewController1 *obj_1 = [obj_story instantiateViewControllerWithIdentifier:#"VC1"];
UINavigationController *navi_vc1 = [[UINavigationController alloc]initWithRootViewController:obj_1];
navi_vc1.navigationBarHidden = YES;
ViewController2 *obj_2 = [obj_story instantiateViewControllerWithIdentifier:#"VC2"];
UINavigationController *navi_vc2 = [[UINavigationController alloc]initWithRootViewController:obj_2];
navi_vc2.navigationBarHidden = YES;
[tabBar_Controller setViewControllers:[NSArray arrayWithObjects:navi_vc1,navi_vc2,nil]];
//Hide Tabbar View Controller.//
[self hideTabBar]
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-(void) hideTabBar
{
for(UIView *view in tabBar_Controller.view.subviews)
{
if([view isKindOfClass:[UITabBar class]])
{
[view setFrame:CGRectMake(view.frame.origin.x, [UIScreen mainScreen].bounds.size.height, view.frame.size.width, view.frame.size.height)];
}
else
{
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, [UIScreen mainScreen].bounds.size.height)];
}
}
}
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
-(void)create_BottomBarButton
{
UIView *viewBottom = (UIView *)[self.window viewWithTag:Tag_BottomView];
if (viewBottom == nil)
{
#try
{
viewBottom = [[UIView alloc]init];
[viewBottom setFrame:CGRectMake([UIScreen mainScreen].bounds.origin.x, [UIScreen mainScreen].bounds.size.height-(HeightOfBottomBar+KsubviewHeight), [UIScreen mainScreen].bounds.size.width, HeightOfBottomBar)];
[viewBottom setBackgroundColor:RGB(47.0, 45.0, 45.0, 1.0)];
[viewBottom setTag:Tag_BottomView];
NSArray *arrImage = [NSLocalizedString(#"arrBottomBarImgs", nil)componentsSeparatedByString:#","];
float x = 0.0;
for (int i =0; i < kTotalTab; i++) {
[self create_TabBtn:viewBottom frame:CGRectMake(x, 0, 62,62) withTag:i+1 withImage:[arrImage objectAtIndex:i]];
x += 64.5;
}
[self.window addSubview:viewBottom];
}
#catch (NSException *exception)
{
NSLog(#"EXCEPTON %#",[exception description]);
}
}
}
-==-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-
-(void)select_Tab:(UIButton *)btn
{
#try {
[[tabBar_Controller.viewControllers objectAtIndex:btn.tag-1] popToRootViewControllerAnimated:YES];
[tabBar_Controller setSelectedIndex:btn.tag-1];
}
#catch (NSException *exception) {
NSLog(#"%s",__PRETTY_FUNCTION__);
}
}
-=-=-=-=-=-=-=-=-=-=-=-=-=-
-(void)pushTabBarIntoNavigationBar
{
[navi setNavigationBarHidden:YES];
[[UIApplication sharedApplication] setStatusBarHidden:NO];
[navi pushViewController:tabBar_Controller animated:YES];
}
-=-=-=-=-=-=-=-=-=-=-=
navi = [[UINavigationController alloc]initWithRootViewController:tabBar_Controller];
[navi setNavigationBarHidden:YES];
self.window.rootViewController = navi;