ios-autolayout

How do I turn a rectangular image view into a circular image view that can hold shape in auto layout without setting width and height restraints? Thereby allowing the imageView to define it’s size, and size bigger and smaller relative to objects around it with leading, trailing, top, and bottom constraints. I asked a similar question the other day, but I think this might be posed in a more concise way. Thanks so much! EDIT Ok, I started over to make this as simple as possible. I have a view named "Cell" and a UIImageView named "dog" within the cell, and that's it. I don't have "unable to

I am using AutoLayout and Size classes, but with release of iOS 10 and new Xcode 8.0, there is one new option Vary for Traits . Is this replacement of Size Classe for different width and height of devices. By selection of width checkbox, it displays varying 14 compact width devices . By selection of height checkbox, it displays varying 18 compact height devices . By selection of both checkbox, it displays varying 11 compact width regular height devices . How to make use of this options ? Can we use AutoLayout with size classes as like Xcode7.0 ? If any one has in depth knowledge then please

I have a UIView and I set the constraints using Xcode Interface Builder. Now I need to update that UIView's height constant programmatically. There is a function that goes like myUIView.updateConstraints() , but I don't know how to use it. Select the height constraint from the Interface builder and take an outlet of it. So, when you want to change the height of the view you can use the below code. yourHeightConstraintOutlet.constant = someValue yourView.layoutIfNeeded() Method updateConstraints() is an instance method of UIView . It is helpful when you are setting the constraints

I have a UITableView running under iOS 8 and I'm using automatic cell heights from constraints in a storyboard. One of my cells contains a single UITextView and I need it to contract and expand based on user input - tap to shrink/expand the text. I'm doing this by adding a runtime constraint to the text view and changing the constant on the constraint in response to user events: -(void)collapse:(BOOL)collapse; { _collapsed = collapse; if(collapse) [_collapsedtextHeightConstraint setConstant: kCollapsedHeight]; // 70.0 else [_collapsedtextHeightConstraint setConstant: [self