UIButton backgroundColor doesn't change on first UITableViewCell

Question

I'm currently developing an application in Swift and, when i run my application on an iPhone 6 (which runs iOS 12.4.6), occurs a strange problem.

I have a UITableView with many of UITableViewCell inside it and, these cells, contain a UIButton which backgroundColor needs to be updated by a specific condition. The problem is that, only the first cell, doesn't load correctly the color, on the contrary it's loaded only after the cell is reused by the UITableView.

I've had a similar problem before (on the same device) inside a UIViewController and I barely resolved it by shifting the code used to control the backgroundColor from the viewDidLoad method to the viewWillLayoutSubviews method.

In my opinion it's something related with the storyboard overriding some values, I've already tried to set the condition on awakeFromNib inside the UITableViewCell but nothing changes, and I can't actually figure out what else may be causing this problem.

Are you using `UIColor(named:)` initializer or you have `.xcassets` folder in your project with custom colors? — vpoltave, Oct 01 '20 at 10:53
1/ Try put the code that changes background color in DispatchQueue.main.async 2/ Try to set button's background color to clear in xib/storyboard. — Duy Nguyen, Oct 01 '20 at 10:56
This is known issue: https://stackoverflow.com/a/59145038/6057764. No need to Dispatching to main async, that's just hide the problem. Just remove named color assigning from Storyboard and assign it in code — vpoltave, Oct 01 '20 at 11:10

score 0 · Answer 1 · answered Oct 01 '20 at 11:08

0

Problem solved, I've actually tried to put the code inside the DispatchQueue.main.async as suggested and it worked fine without any problems.

answered Oct 01 '20 at 11:08

Libreage

71
3

UIButton backgroundColor doesn't change on first UITableViewCell

1 Answers1