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Is this a bug report, a feature request, or a question?

question

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Have you made sure that it wasn't a React Native bug?

not sure

Is the bug specific to iOS or Android? Or can it be reproduced on both platforms?

iOS tested

Is the bug reproductible in a production environment (not a debug one)?

yes

Environment

Environment:
"react": "16.8.3",
"react-native": "0.59.9",
"react-native-snap-carousel": "^3.8.0",

Target Platform:
iOS (12.2)

Expected Behavior

(Write what you thought would happen.)

Actual Behavior

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Reproducible Demo

(Paste the link to a Snack example in which the issue can be reproduced. Please follow the guidelines for providing a Minimal, Complete, and Verifiable example.)

Steps to Reproduce

Hi, i use carousel in modal, and i would after modal opened, i scroll to specific item, but, it didn't because its realy slow action.

<Modal 
   visible={this.state.modalStoryVisible}
   style={{padding:0, margin:0}}
   transparent={true}
   animationType="slide"
>
  <Carousel
        ref={(c) => this._carouselStory = c}
        data={this.state.favoris}
        renderItem={this.renderModalCarrousel.bind(this)}
	initialNumToRender={this.state.favoris.length}
	firstItem={this.state.activeIndex}
	sliderWidth={width}
	itemWidth={width}
	layout={'default'}
	onSnapToItem={(activeIndex) => {
	      this.setState({activeIndex:activeIndex});
	}}
 />
</Modal>

I would like use initialNumToRender={1} and firstItem={27}, but don't scroll to. I think because listView no render all. how can I do ?

Start by reproducing the reported Modal and Carousel configuration with initialNumToRender={1}, firstItem={27}, and the supplied React Native versions. Read the Carousel documentation and implementation for firstItem, initialNumToRender, and scrolling behavior. Done means establishing whether the requested item can be reached promptly and documenting or fixing the behavior with a reproducible example.