Why doesn't my UIView animation work when I put it in a containerView in a different class?

Question

I have done a simple animation on a UIView and it works the way I want to. But it stops working when I seperate the code. I have put the UIView that should be animated into a containerView and that containerView is connected to the animationCode class. The "main" viewController has it's seperate class as well with buttons that trigger the animation.

From the main viewController:

bottomTableView.rx.modelSelected(ModeButtons.self)
    .subscribe(onNext: { [weak self] value in
        switch value {
            case .One:
                self?.container.animationOne()
            case .Two:
                self?.container.animationTwo()
        }
    }).disposed(by: disposeBag)

And one of the animation functions:

func animationOne(){
    UIView.animate(withDuration: 0.3, animations: {
        self.downarrow?.alpha = 1.0
        self.upArrow?.alpha = 1.0
        self.leftLine?.frame.size.width = 10.0
        self.rightLine?.frame.size.width = 10.0
        self.rightLine?.frame.origin.x = self.animationView.frame.width - self.rightLine!.frame.width
        self.upArrow?.frame = CGRect(x: self.animationView.frame.width - self.rightLine!.frame.width - self.upArrow!.frame.width - 5.0, y: (self.animationView.frame.height - self.upArrow!.frame.height) / 2, width: self.upArrow!.frame.width, height: self.upArrow!.frame.height)
        self.downarrow?.frame = CGRect(x: self.leftLine!.frame.width + 5.0, y: (self.animationView.frame.height - self.upArrow!.frame.height) / 2, width: self.upArrow!.frame.width, height: self.upArrow!.frame.height)
    })
}

Here's an image that might explain the setup better: Up to the left is the containerView with the UIView and below are the buttons. Like I previously said. This worked fine when everything is in the same viewController and class. So why isn't the animation work now? What am I missing?

Yes, it runs through the whole thing, but no animation shows... — Joakim Sjöstedt, May 08 '20 at 07:06
please post more code .... or check outlets .. your image is in container or buttons are ? — Jawad Ali, May 08 '20 at 07:09
Before each line, print the target. For example, before `self.downarrow?.alpha = 1.0`, put `print(self.downarrow)`. Do that for every line. Run the app and do the animation. What prints? — matt, May 12 '20 at 11:04

score 0 · Answer 1 · answered May 08 '20 at 08:38

0

Sometimes put animation code into main queue can solve this

DispatchQueue.main.async {
    UIView.animate(withDuration: 0.3) {

    }
}

answered May 08 '20 at 08:38

pikacode

179
7

Why doesn't my UIView animation work when I put it in a containerView in a different class?

1 Answers1