UIView animation trying to change the frame size doesn't work in iOS 8 but in iOS 7

Question

I wanted to resize an UIView, my code works perfect in iOS 7.1 but when I run it in iOS 8 it didn't work properly (I will explain below).

I have my UIView int the storyboard with values (0,67,511,320), I want to resize to full screen on iPad, so I added the following code:

        [UIView animateWithDuration:0.5 animations:^{

            CGRect frame = containerView.frame;
            frame.origin.x = 0;
            frame.origin.y = 67;
            frame.size.height = 643;
            frame.size.width = 1024;
            containerView.frame = frame;
            ...

        }completion:^(BOOL finished) {
            ...
        }];

I wanted something like:

 _________________________________
|           |                     |
|           |                     |
|     A     |                     |
|___________|                     |
|                                 |
|                BACKGROUND       |
|                                 |
|                                 |
|_________________________________|

                |
                V
 _________________________________
|                                 |
|                                 |
|                                 |
|               A                 |
|                                 |
|                                 |
|                                 |
|                                 |
|_________________________________|

But it starts the animation like (0,67,0,0) to (0,67,511,320)

Any clue about what is happening? Or alternative?

Ataliah

Note that you don't need to get the frame from the containerView.frame when overwriting all members, as you do. – Wellhead

Answer 1

You should disable pregenerated constraints. The most simple way is to use autoresizing masks instead of constraints for animating view.

containerView.translatesAutoresizingMaskIntoConstraints = YES;

You can put this code to your -viewDidLoad method or just above [UIView animateWithDuration:...

Hardecanute

what should be the contrainerView if I have scrollview and uiview inside of scrollview and animations happening inside this uiview. Would it be that uiview? – Gagarin

Answer 2

is autolayout enabled? maybe in iOS 8 some additional constrains are adding during build time

try to call [self.view layoutIfNeeded]; in animatin block, after animation code itself

UPDATE

__block CGRect frame = containerView.frame;
frame.origin.x = 0;
frame.origin.y = 67;
frame.size.height = 643;
frame.size.width = 1024;

[UIView animateWithDuration:0.5 animations:^{

        containerView.frame = frame;
        ...

    }completion:^(BOOL finished) {
        ...
    }];

Corney

I add my views in storyboard, how i could disable this? – Tectonic

Did [self.view layoutIfNeeded] help ? Also look how to animate view with constrints #17627302 – Corney

It doesn't work but I finally solved it with @LorikMalork answer thanks for your help! – Tectonic