hidesBottomBarWhenPushed but when popped - iphone

Question

I've a problem with something that seems to be very simple.
My app has a view hierarchy consisting in a UITabBarController containing UINavigationControllers. When I navigate from the root to the second level
I set the hidesBottomBarWhenPushed on true so that the tab bar is hidden
On my firstLevelController:
[secondLevelController setHidesBottomBarWhenPushed:YES];
[self.navigationController pushViewController:secondLevelController animated:YES];
After that when I push to the third level, I bring the tab bar again by doing in the secondLevelController:
[self setHidesBottomBarWhenPushed:NO];
[thirdLevelController setHidesBottomBarWhenPushed:NO];
[self.navigationController pushViewController:thirdLevelController animated:YES];
(I know, I didn't like the [self setHidesBottomBarWhenPushed:NO] either, but it didn´t work otherwise...)
So, here is the problem: when I push the back button in the third level and the second view appears, I need to hide the tabbar again but I couldn´t find the way of doing this.
Any help is appreciated

Answer 1

This is what works for me.
[self setHidesBottomBarWhenPushed:NO];
[thirdLevelController setHidesBottomBarWhenPushed:NO];
[self.navigationController pushViewController:thirdLevelController animated:YES];
[self setHidesBottomBarWhenPushed:YES];
The thirdlevelController shows the tabbar and secondLevelController does not show the tabbar when you pop the thirdLevelController.

Answer 2

On your secondViewController, do :
- (BOOL) hidesBottomBarWhenPushed {
return ([self.navigationController.viewControllers lastObject] == self);
}
This way, the tabbar will always be hidden when you are on the secondViewController, and it will appear on the other view controllers

Answer 3

You can hold a bool value to understand if you are coming from a popViewController
and in viewDidAppear you can detect it an hide your tab bar again.
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
if(backFromThirdView)
[self setHidesBottomBarWhenPushed:YES];
else
[self setHidesBottomBarWhenPushed:YES];
}

Answer 4

I was actually on the same problem. I always tried to hide the tabbar when selecting a row and to disable hiding after returning to the list (a tableview inside a navigationcontroller) so that the user can select the menu again. I set the tabbarcontroller hidden inside the method
-(void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
but when I hided it inside this method, the Tabbar was still hided when returning to my list again. Now I hide the Tabbarcontroller inside the init method of a specific viewcontroller, maybe this works for somebody else too:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
[self setHidesBottomBarWhenPushed:YES];
return self;
}
now when i select a list item and this viewcontroller will be presented the tabbar is hided, after returning to the list it appears again.

Answer 5

You can try this
You declare in the secondLevelController
static BOOL bottomBarShouldHide = YES;
In the viewDidLoad,
if (bottomBarShouldHide) {
[secondLevelController setHidesBottomBarWhenPushed:YES];
bottomBarShouldHide = NO;
}
else {
[secondLevelController setHidesBottomBarWhenPushed:NO];
bottomBarShouldHide = YES;
}
I hope it could help you.