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Set a UIViewController's title with a NSMutableArray item
NSArray *foodArr = [NSArray arrayWithObjects:@"Chicken",@"Cheese",@"Hamburger"]

NSString *foodTitle = [foodArr objectAtIndex:1];

self.navigationController.title = foodTitle;

yourViewController.title = [self.myNameArray objectAtIndex:selectedIndex];

yourViewController.title = [[self.myObjectArray objectAtIndex:selectedIndex] title];

-(void) viewDidLoad {

   self.navigationItem.title = [NSString stringWithString:@"%@",[yourTitles objectAtIndex:yourIndex];

}

-(void) viewDidLoad {

   [titleLabel setText:[NSString stringWithString:@"%@",[yourTitles objectAtIndex:yourIndex]];

}

//Assuming you are displaying food item in tableView
//vController is class object which is going to be pushed on navigation stack
//Put this line in didSelectRowAtIndexPath method

yourViewControllerObject.title = [foodItemArray objectAtIndex:indexPath.row];