Re: Width defining NSLayoutConstraint zero
Re: Width defining NSLayoutConstraint zero
- Subject: Re: Width defining NSLayoutConstraint zero
- From: Kyle Sluder <email@hidden>
- Date: Thu, 10 Apr 2014 09:09:13 -0700
On Apr 10, 2014, at 6:25 AM, Jonathan Mitchell <email@hidden> wrote:
>
> On some occasions I want my controls to collapse and set a width defining constraint constant to zero.
In general, views should not be resized to zero width or height. A lot of times things will break internally (divide by zero errors or visual artifacts). This was even more likely in the days of springs and struts, when shrinking a view to zero width/height meant -resizeWithOldSuperviewSize: lost all the information necessary to apply springs and struts.
>
> Is the only workaround to wrap such controls in another view and collapse the superview instead?
If you want to remove a view, you should really remove it from its superview. You could look into NSStackView, which will do this automatically if constraints cannot be satisfied.
--Kyle Sluder
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