无法在导航栏上添加导航项

Question

I have Used a Navigation controller, IN my application within a TAbbar controller, the problem I am facing is I am unable to add Navigation bar Items to the navigation bar of a particular controller

when I do

self.navigationCOntroller.navigationItem.rightBarButtonItem=aBArButtonItem;

Nothing is shown

When I do

self.tabController.navigationController.navigationItem.rightBArButtonItem=aBArButtonItem

then the same item is being added to all the viewCOntrollers in the Tabbarcontroller, I wan to display different bar button Items on different Controllers, Any Ideas how I can Achieve this??

Answer 1

I finally figured it out, I wasnt able to add any navigation Item because the TabbarCOntroller was the Container View, the following Code Helped Me out

  self.tabBarController.navigationItem.rightBarButtonItem=right;

I also Had to override this code in the second ViewCOntroller with

  self.tabBarController.navigationItem.rightBarButtonItem=nil;

Only then I was able to add and respond to the NavigationItems in the Navigation Bar

Answer 2

try the following code

UINavigationController * navController = [[self.tabBarController viewControllers]objectAtIndex:[self.tabBarController selectedIndex]];
    navController.navigationItem.rightBarButtonItem = aBarButtonItem

Answer 3

Instead of self.navigationController.navigationItem.rightBarButtonItem=aBArButtonItem; try self.navigationItem.rightBarButtonItem=aBArButtonItem; . This way you access the navigationItem from your view controller, not from the entire navigation controller

Answer 4

The navigationItem you're interested in is a property of your viewController , not the navigationController or tabBarController .

So if you try:

self.navigationItem.rightBarButtonItem = aBArButtonItem;

you'll have more success!