[NativeAnimated] Support the Slow Animations option of the iOS simulator
#21157
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cc @kmagiera Could be nice to integrate this in reanimated too. |
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Including a video in your test plan would be cool |
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sahrens is landing this pull request. If you are a Facebook employee, you can view this diff on Phabricator.
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@janicduplessis merged commit 40bcc38 into Once this commit is added to a release, you will see the corresponding version tag below the description at 40bcc38. If the commit has a single |
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@janicduplessis: we're seeing animated test failures after merging this - any idea why that could be? e.g. RCTNativeAnimatedNodesManagerTests/testSpringAnimationLoop: RCTNativeAnimatedNodesManagerTests/testAnimationCallbackFinish: |
| CGFloat RCTAnimationDragCoefficient() | ||
| { | ||
| #if TARGET_IPHONE_SIMULATOR | ||
| return (CGFloat)UIAnimationDragCoefficient(); |
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Based on this POP code, maybe we need to guard against 0 for some reason?
https://github.com/facebook/pop/blob/master/pop/POPAnimationExtras.mm#L37
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Nope. For some reason the value is 10 when testing...I'll fix it.
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Oh that's strange. Thanks for investigating this!
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…1157) Summary: RN animations currently ignore the `Slow Animations` option on the iOS simulator because we don't use UIKit animations directly. This uses a private api to get the slow coefficient and use it in the native animated driver. We only compile the private api code on simulator so this won't cause issues for app store approval. One possible issue is that the api changes in new iOS versions but I think it's reasonable to do this. Note that this won't work with JS driven animations, we could expose the slow coefficient as a constant and use that in JS but I decided not to implement it. Pull Request resolved: facebook#21157 Differential Revision: D9980306 Pulled By: sahrens fbshipit-source-id: bdbce2e469261a75cb4b9a251e8e8f212bb9c4e7
RN animations currently ignore the
Slow Animationsoption on the iOS simulator because we don't use UIKit animations directly. This uses a private api to get the slow coefficient and use it in the native animated driver. We only compile the private api code on simulator so this won't cause issues for app store approval. One possible issue is that the api changes in new iOS versions but I think it's reasonable to do this.Note that this won't work with JS driven animations, we could expose the slow coefficient as a constant and use that in JS but I decided not to implement it.
Test Plan:
Tested that animations are properly slowed like native UIKit ones in RNTester native animated example.
Release Notes:
[IOS] [ENHANCEMENT] [NativeAnimated] - Support the
Slow Animationsoption of the iOS simulator