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> the little design flourishes the OP described And what flourishes are those?

• afavour 5y ago
  An example I’ve seen (I forget where but hey, it won’t work now anyway) is to move some background elements to create a parallax effect, like iOS itself does: https://www.idownloadblog.com/2013/06/28/ios-7-parallax-effect-explained/ https://www.idownloadblog.com/2013/06/28/ios-7-parallax-effe... I’m not trying to make out that it’s a crucial feature or anything but it’s a useful case study in permission gating things: it’s small enough that you’d never trigger a permission prompt to ask to do it, so you just don’t instead, and lose a class of nice subtle design flourish.
  • Pulcinella 5y ago
    Just FYI for anyone wondering: I believe this parallax effect specifically uses the UIMotionEffect API. It’s designed to be a simple and straightforward way to implement these kinds of effects without the developer having to worry about cleaning up the raw, noisey motion data. It has a few limitations/features. I don’t think it necessarily always runs at the screen refresh rate. It will also “self level” after a while. So if the user rotates their device and this causes a UI effect, if they hold their phone still the effect will reset after a few seconds. https://developer.apple.com/documentation/uikit/uimotioneffect/ https://developer.apple.com/documentation/uikit/uimotioneffe...