Question for “Props”

[Shahidunofficial]

is it feasible to sync the scroll of two carosels using rnrc

[dosubot]

Hello @Shahidunofficial! I'm Dosu, your friendly bot here to help you with bugs, questions, and contributions while you wait for a human maintainer. Let’s dive into your issue!

Yes, it is feasible to synchronize the scroll of two carousels using react-native-reanimated-carousel. You can achieve this by utilizing useSharedValue and useAnimatedReaction hooks. Here's a brief overview of how you can do it:

1. Initialize a Shared Value: Create a shared value to hold the scroll position that both carousels will use.

   const sharedScrollPosition = useSharedValue(0);

2. Set Up Animated Reaction: Use useAnimatedReaction to update the scroll position of the second carousel whenever the first carousel's scroll position changes.

   useAnimatedReaction(
     () => sharedScrollPosition.value,
     (currentScrollPosition) => {
       // Update the second carousel's scroll position
       secondCarouselScrollHandler.value = currentScrollPosition;
     }
   );

3. Attach Shared Value to Carousels: Ensure that the first carousel updates the sharedScrollPosition whenever it scrolls, and the second carousel uses this shared value to set its scroll position.

   // First carousel
   <Carousel
     onScroll={Animated.event(
       [{ nativeEvent: { contentOffset: { x: sharedScrollPosition } } }],
       { useNativeDriver: true }
     )}
     // other props
   />
   
   // Second carousel
   <Carousel
     scrollHandler={secondCarouselScrollHandler}
     // other props
   />

By using these hooks, you can effectively synchronize the scroll positions of two carousels ^[1].

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