It is possible, but you’ll have to do a little extra work. There are a couple conceptual things to get out of the way first: Hidden views, even though they don’t draw, still participate in Auto Layout and usually retain their frames, leaving other related views in their places. When removing a view from its … Read more
It sounds like you want a StackPanel where the final element uses up all the remaining space. But why not use a DockPanel? Decorate the other elements in the DockPanel with DockPanel.Dock=”Top”, and then your help control can fill the remaining space. XAML: <DockPanel Width=”200″ Height=”200″ Background=”PowderBlue”> <TextBlock DockPanel.Dock=”Top”>Something</TextBlock> <TextBlock DockPanel.Dock=”Top”>Something else</TextBlock> <DockPanel HorizontalAlignment=”Stretch” VerticalAlignment=”Stretch” … Read more
Do you plan to have a squared UIView of width: 100 and Height: 100 centered inside the UIView of an UIViewController? If so, you may try one of the 6 following Auto Layout styles (Swift 5 / iOS 12.2): 1. Using NSLayoutConstraint initializer override func viewDidLoad() { let newView = UIView() newView.backgroundColor = UIColor.red view.addSubview(newView) … Read more
This works for both iOS 6.1 and iOS 7: – (void)textViewDidChange:(UITextView *)textView { CGFloat fixedWidth = textView.frame.size.width; CGSize newSize = [textView sizeThatFits:CGSizeMake(fixedWidth, MAXFLOAT)]; CGRect newFrame = textView.frame; newFrame.size = CGSizeMake(fmaxf(newSize.width, fixedWidth), newSize.height); textView.frame = newFrame; } Or in Swift (Works with Swift 4.1 in iOS 11) let fixedWidth = textView.frame.size.width let newSize = textView.sizeThatFits(CGSize(width: fixedWidth, … Read more
Updated Nowadays, Apple realized the problem we solved many years ago (lol_face) and provides Content Layout Guide and Frame Layout Guide as part of the UIScrollView. Therefore you need to go through the following steps: Same as original response below; For this contentView, set top, bottom, left, and right margins to 0 pinning them to … Read more
A quick summary of the concepts: Hugging => content does not want to grow Compression Resistance => content does not want to shrink Example: Say you’ve got a button like this: [ Click Me ] and you’ve pinned the edges to a larger superview with priority 500. Then, if Hugging priority > 500 it’ll look … Read more
Two important notes: You need to call layoutIfNeeded within the animation block. Apple actually recommends you call it once before the animation block to ensure that all pending layout operations have been completed You need to call it specifically on the parent view (e.g. self.view), not the child view that has the constraints attached to … Read more
TL;DR: Don’t like reading? Jump straight to the sample projects on GitHub: iOS 8 Sample Project – Requires iOS 8 iOS 7 Sample Project – Works on iOS 7+ Conceptual Description The first 2 steps below are applicable regardless of which iOS versions you are developing for. 1. Set Up & Add Constraints In your … Read more