On 31 Jul 2014, at 00:18, David Duncan <david.dun...@apple.com> wrote:
>> That's the purpose of setting the auto-resizing mask to FlexibleWidth. At
>> least for title views, that causes UINavigationBar to send -sizeThatFits: to
>> the view.
>
> For UINavigationBar you shouldn’t need to even set flexible width, just
> implement -sizeThatFits:. Unfortunately UIToolbar does not call
> -sizeThatFits: for the views of bar button items.
>
> Gerriet, you can try setting the frame of the slider then calling
> -setNeedsLayout/-layoutIfNeeded on the toolbar to update the layout. If you
> do this within the standard layout callbacks it should go along with any
> animation that is already going.
Following your suggestion I changed my code to:
override func viewWillLayoutSubviews() // manage slider in bottomToolBar
{
// current width of toolbar is all wrong. Need to do:
bottomToolBar.setNeedsLayout()
bottomToolBar.layoutIfNeeded()
// now the toolbar width seems to be right
let b = bottomToolBar.frame.size.width
speedSlider.frame.size.width = b - 40
bottomToolBar.setNeedsLayout()
bottomToolBar.layoutIfNeeded()
}
Works perfectly now. Thanks a lot!
Kind regards,
Gerriet.
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