How to remove the last tab from uitabbarcontroller if having only three tabs

Question

Here i am trying to dynamically add and remove the tab from uitabbarcontroller .

As well as replace them . My apps situation is as below.

First view is Logon and about

After successful logon new 3 tabs . With last as More and two other .

In more Logoff option is there after selecting this i want to remove the last tab and

replace first two with again logon and About. i.e (Home View)

So in my code i m doing like this ........

///AppDelegate.m

(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

self.window.rootViewController = tabBarCntr; tabBarCntr=[[UITabBarController alloc]init]; LogonViewController *logon=[[LogonViewController alloc]init]; logon.tabBarItem.title=@"Logon"; AboutViewController *about=[[AboutViewController alloc]init]; about.tabBarItem.title=@"About"; tabBarCntr.viewControllers=[NSArray arrayWithObjects:sos1,about,nil]; [logon release]; [about release];

[self.window addSubview:tabBarCntr.view];

[self.window makeKeyAndVisible]; }

and in my IBAction after logon successful setting new viewcontrollers to tabbarcontroller

self.tabBarController.viewControllers=[NSArray

arrayWithObjects:newController1,newController2,more,nil];

    Now in my loggoff i coding something like.....
       NSMutableArray *newArray;   
     newArray=[NSMutableArray arrayWithArray:self.tabBarController.viewControllers];
       [newArray replaceObjectAtIndex:0 withObject:logon];
       [newArray replaceObjectAtIndex:1 withObject:about];
       [newArray removeLastObject];
       self.tabBarController.selectedIndex=0;
       [self.tabBarController setViewControllers : newArray];


  but my applcation crash here after this ....
 can any has solution for this ...

Thnx in advance.

Paggyyyyy

Edit: NSMutableArray arrayWithArray added space to fix code

vishy vishy · Accepted Answer · 2012-01-10T10:25:11

In my opinion, you use 2 separate tabBarControllers. one for login and other for app. once you login remove & release the login tab and add app tab. And again after logout remove & release app tab and add the login tab. This will be easier to access tabs, instead of removing/adding viewcontrollers, renaming tabs, changing tab images.

How to remove the last tab from uitabbarcontroller if having only three tabs

2 Answers