For some programming reason, I need to know the real size (width and height) of an UIView wich has constraints.
Depending on the device I use, and depending on the orientation of the device, the width or height of my view change, but frame and layer frame don't give me the correct result.
Is there a mean to have the size?
Likely, the call to the computeSize func happens before all objects frame properties are updated (before redraw has ended).
If you perform this computation in another thread, that should work:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
DispatchQueue.main.async {
self.computeSize()
}
}
I would try to get them in viewDidLayoutSubviews.
Constraints will have been applied and values should match reality.
there is two problems in viewDidLayoutSubviews:
Do you do it in viewDidLayoutSubviews and nit viewWillLayoutSubviews ?
If the problem is only when rotating device, try to do it in
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) { }
I tried all: ViewDidLyoutSubviews, viewWillLayoutSubviews and ViewWillTransaition
I found a solution, but it implies subclassing the subviews for which the "realSize" is needed : in the method layoutSubviews of a subclassed UIView, the size is correct
Surprising that you need to subclass. Have you a small code sample so that I can test ?
Likely, the call to the computeSize func happens before all objects frame properties are updated (before redraw has ended).
If you perform this computation in another thread, that should work:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
DispatchQueue.main.async {
self.computeSize()
}
}