Issue with constraints on bottom layout - ios

Question

I'm getting some issues with a constraint relative from the bottom layout.
There are some views inside a UITabBarViewController. When I change to another view from the tab and return to first one, the viewcontroller not recognize the bottom layout as the tab bar, but from the bottom of the view.
I uploaded the problem here: https://sites.google.com/site/rveducationapps/layoutError.png?attredirects=0&d=1
I already tried put in ViewDidAppear and also ViewWillAppear:
[self.view layoutSubviews];
[self.view setNeedsUpdateConstraints];
I logged the subviews in the two cases, the right one and after I exit and return to the view:
subviews:(
"<UIView: 0x146b2260; frame = (210 0; 814 712); autoresize = RM+BM; layer = <CALayer: 0x146b22c0>>",
"<UIButton: 0x146a9eb0; frame = (727 672; 287 30); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x146aa070>>",
"<UITableView: 0x151d3400; frame = (0 0; 210 761); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x146b14b0>; layer = <CALayer: 0x146ade20>; contentOffset: {0, 0}>",
"<_UILayoutGuide: 0x146b23b0; frame = (0 0; 0 20); hidden = YES; layer = <CALayer: 0x146b24a0>>",
"<_UILayoutGuide: 0x146b28a0; frame = (0 712; 0 56); hidden = YES; layer = <CALayer: 0x146b2910>>"
)
subviews:(
"<UIView: 0x146b2260; frame = (210 0; 814 768); autoresize = RM+BM; layer = <CALayer: 0x146b22c0>>",
"<UIButton: 0x146a9eb0; frame = (727 728; 287 30); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x146aa070>>",
"<UITableView: 0x151d3400; frame = (0 0; 210 817); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x146b14b0>; layer = <CALayer: 0x146ade20>; contentOffset: {0, 0}>",
"<_UILayoutGuide: 0x146b23b0; frame = (0 0; 0 20); hidden = YES; layer = <CALayer: 0x146b24a0>>",
"<_UILayoutGuide: 0x146b28a0; frame = (0 768; 0 0); hidden = YES; layer = <CALayer: 0x146b2910>>"
)
I see there are some differences, specially in:"<_UILayoutGuide: 0x146b28a0; frame = (0 712; 0 56); hidden = YES; layer = <CALayer: 0x146b2910>>"
But I don't know how to fix it.
EDITED:
I think I fixed. I selected the UIViewController in the Storyboard and disabled the EXTEND EDGES->Under Bottom Bars option.

Answer 1

If you are transitioning from your UITabBarViewController to a new UIViewController, and then attempting to go back to your tabBarController from that UIViewController, then you could simply segue back to the UITabBarViewController(The segue will take you back to your rootViewController for your UITabBarViewController).
If you need to transition back to a specific tab, instantiate a custom segue and send it back to a different tab using a different specified VC, this can be set in your UITabBarViewController class or in your applications AppDelegate.m file.