Fade in animation not smooth on iOS 10

[dougamos]

On iOS 9 the HUD fades in smoothly from what appears to be alpha 0.0 -> 1.0. On iOS 10 the animation seems to fade from alpha 0.0 -> 0.5 and then within one frame jumps to 1.0. See attached movie screen captures to see in action.

I am using JGProgressHUD version 1.4. The code to bring up the dark HUD is straightforward with no custom subclassing etc.

screen_movies.zip

[JonasGessner]

It seems like the blur view doesn't play along nicely with the alpha animation. I'll see if I can find a fix for this.

[kkubkko]

Any progress? :)

[kkubkko]

I've handled it by my own like this : (According to this post : http://stackoverflow.com/questions/29307827/how-does-one-fade-a-uivisualeffectview-and-or-uiblureffect-in-and-out)

private let overlay = UIVisualEffectView()

In some init() method:

        hudView.addSubview(overlay)

        hudView.sendSubview(toBack: overlay)

        overlay.layer.masksToBounds = true

 override func show(in view: UIView!)
    {
        self.alpha = 1
        indicatorView.alpha = 0

        super.show(in: view, animated: false)

        overlay.frame = self.hudView.bounds
        overlay.center = self.indicatorView.center

        UIView.animate(withDuration: 0.5, animations:
        {
            self.indicatorView.alpha = 1
            self.overlay.effect = UIBlurEffect(style: .dark)
        })
    }

Works like a charm :)

[JonasGessner]

Sweet. Feel free to open a pull request and I'll check it out!

[JonasGessner]

This seems to be fixed on iOS 11. Can anybody confirm this?