Infinite CABasicAnimation stops

Question

I 've an infinite animation (rotating an image, type: `CABasicAnimation`) in my UIView with ``` animation.repeatCount = HUGE_VALF; ``` When I push a new ViewController and go back to the initial ViewController with the animation containing View inside, the rotation stopped. Even if I set up the animation again when the ViewController's `viewWillAppear` method gets called, it won't rotate again. What am I doing wrong?

Accepted Answer

Actually, there is a simple way to solve this setting your animation to this:

Swift 3 version

```
animation.removedOnCompletion = false
```

Swift 4 version

```
animation.isRemovedOnCompletion = false
```

The layer itself isn't destroyed, when NavigationController is being pushed to another ViewController's view, because UINavigationController got `viewControllers` property which will retain the original viewController and therefore its view and your animated layer.

It is this CABasicAnimation object destroyed when view removed from interface even though you set its repeatCount to infinite. So set the `isRemovedOnCompletion` to false to keep it.

Infinite CABasicAnimation stops

Solution

Problem