Animating height changes on cell content

Question

knellr OP

Created Aug ’16

Replies 5

Boosts 0

Views 10k

Participants 6

We noticed a bug in our animations on the iOS 10 betas within

UITableView

cells: The cell's frame is animating, but the

contentView

's frame is immediately jumping to the new position.

This happens in iOS 10 devices when building against the iOS 9 SDK using Xcode 7 - the animation is fine on iOS 9 devices.

Steps to reproduce

Create a table view with
```
UITableViewAutomaticDimension
```
Add a view to one of the cells with edge constraints

Animate

intrinsicContentSize

change to the view with

animateWithDuration

/

layoutIfNeeded

Animate the cell height change with
```
beginUpdates
```
/
```
EndUpdates
```

Animation code

 UIView.animateWithDuration(0.3) { 
    viewToAnimate.setNeedsLayout()
    viewToAnimate.layoutIfNeeded() 
} 
 
self.tableView.beginUpdates()
self.tableView.endUpdates()

I've opened a radar for this (27679031) but are there are any good workarounds / alternative ways to achieve this animation?

Boost

Answer 1

abushnaq-work OP

Aug ’16

Hi,

I'm seeing something similar with jumpiness when I change the height constraint with animation. Did you ever find a workaround?

0

Answer 2

funcoder OP

Aug ’16

ditto... got the same thing

@kellnr: Any response to your radar?

0

Answer 3

cnotethegr8 OP

Aug ’16

http://stackoverflow.com/questions/39104846/uitableviewcell-animate-height-issue-in-ios-10/

0

Answer 4

Frameworks Engineer OP

Apple

Dec ’16

This issue has been resolved in iOS 10.2 (build 14C92).

0

Answer 5

Szhukov OP

Feb ’17

This behavior still seem to be present for me on 10.2.1 (14D27)

0

	UIView.animateWithDuration(0.3) {
	viewToAnimate.setNeedsLayout()
	viewToAnimate.layoutIfNeeded()
	}

	self.tableView.beginUpdates()
	self.tableView.endUpdates()