meliorence / meliorence/react-native-snap-carousel
Question - Collapsable Header
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- Dominant language
- JavaScript
- Stars
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Description
Is this a bug report, a feature request, or a question?
Question
I am interested in making a collapsable header while using a Carousel in vertical orientation. I have an animated value listening to the onScroll event on the Carousel. As the user scrolls from the first item down, I make the height of the header smaller. This causes the Carousel to jump around and get really glitchy before going back to the first item. Is there a way to achieve a collapsable header without the Carousel spazzing out?
Thanks!
Example:
const headerHeightInterpolation = scrollOffsetY.current.interpolate({
inputRange: [0, HEADER_SCROLL_DISTANCE],
outputRange: [EXPANDED_HEADER_HEIGHT, COLLAPSED_HEADER_HEIGHT],
extrapolate: 'clamp',
});
...
<View>
<Animated.View style={{flex: 1, height: headerHeightInterpolation, marginBottom: 8}}>
<Carousel vertical={true} ...restOfProps />
</Animated.View>
</View>
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the vertical Carousel configuration and the onScroll/Animated interpolation shown in the example. Reproduce the jump while changing the header height, then determine whether this interaction is supported. Done should be a documented, working approach or a clearly scoped resolution for the reported glitch.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript, react-native
- Domain
- mobile
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100