hidesBottomBarWhenPushed but when popped

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 开发者_StackOverflowis 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

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.

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

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];

}

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.

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.