Dynamically resize Container View to size of embed segue's View Controller contents?

Question

SuperWomble OP

Created Jul ’15

Replies 4

Boosts 1

Views 22k

Participants 4

Hi all.

In IB I have dragged a Container View from the object palette to my View Controller ("MainViewController").

I have control-dragged from the Container View to a second View Controller ("EmbeddedViewController"), creating an Embed Segue.

The contents of EmbeddedViewController's view property are subject to change (subviews will be added/removed over time).

Question: how do I make MainViewController dynamically adjust in size to size changes in EmbeddedViewController?

Do I need to do something like add a height Constraint Outlet to MainViewController, and set its constant when the size of EmbeddedViewController changes?

Or is there a simpler way that can be done in IB?

Thanks for any help.

Answered by Frameworks Engineer in 28734022

Hi SuperWomble,

There is no way to make the resizing happen automatically; you will need some code. If the child view controller updates its preferredContentSize, in response to subviews being added/removed, then the parent view controller (your container) will receive call to its -preferredContentSizeDidChangeForChildContentContainer: method. You can use this opportunity to adjust the height of the Container View.

Boost

Answer 1

Frameworks Engineer OP

Apple

Jul ’15

Accepted Answer

Hi SuperWomble,

There is no way to make the resizing happen automatically; you will need some code. If the child view controller updates its preferredContentSize, in response to subviews being added/removed, then the parent view controller (your container) will receive call to its -preferredContentSizeDidChangeForChildContentContainer: method. You can use this opportunity to adjust the height of the Container View.

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Answer 2

SuperWomble OP

Jul ’15

Thank you Justin, I appreciate the help.

0

Answer 3

AlexanderDeplov OP

Jul ’15

Oh, nice, didn't know about that method. Used height constraint for that.

0

Answer 4

andrewtheis OP

Dec ’15

Does this mean the height has to be set explicitly or is there a way to for autolayout at this point to size the container view to fit that of its contents?

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