react native videos in carousel

问题

I have been trying to play single video from a slider containing of multiple videos and images.. What i used and tried is in below. 1. react-native-video, 2. react-native-snap-carousel

How to pause and play the videos wrapped in horizontal carousel and also which are in vertical FlatList Feeds

This is my carousel :

<View style={styles.sliderImgView}>
     <Carousel
       ref={(c) => { this._carousel = c; }}
       data={chordData.images}
       firstItem={0}
       autoplay={autoPlay}
       layout={layout}
       loop={loop}
       renderItem={this._renderItem}
       onSnapToItem={(ind) => this.setState({ activeSlide: ind })}
       loopClonesPerSide={bannersDataLength}
       sliderWidth={SCREEN_WIDTH}
       itemWidth={SCREEN_WIDTH} />
</View>

And my _renderItem is here :

if (item.mediaType === "image") {
return (
    <View style={[styles.sliderImgView, GlobalStyles.ajCenter]} key={index}>
        <Image source={{ uri: item.imgUrl }} resizeMode={"cover"} style={[styles.sliderImageStyle]} />
    </View>
)
} else {
    return (
        <View style={[styles.sliderImgView, GlobalStyles.ajCenter]} key={index}>
            <Video
                source={{ uri: item.imgUrl }}  // Can be a URL or a local file.
                ref={(ref) => { this.player = ref }}  // Store reference
                resizeMode={"cover"}
                paused={index !== this.state.activeSlide}
                onLoad={this.onVideoLoad}
                onError={this.onVideoError}
                controls={false}
                style={styles.backgroundVideo} />
        </View>
    )
}

And my Array look's like this :

result: [
{
    id: 1,
    title: "Feed Title",
    description: "Feed description....",
    data: [
        {
            id: 1,
            mediaType: "image",
            imgUrl: "https://images.unsplash.com/photo-1473177027534-53d906e9abcf?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1049&q=80"
        },
        {
            id: 2,
            mediaType: "video",
            imgUrl: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
        },
        {
            id: 3,
            mediaType: "image",
            imgUrl: "https://images.unsplash.com/photo-1473177027534-53d906e9abcf?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1049&q=80"
        },
        {
            id: 4,
            mediaType: "video",
            imgUrl: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
        },
    ]
},
{
    id: 2,
    title: "Feed Title",
    description: "Feed description....",
    data: [
        {
            id: 1,
            mediaType: "image",
            imgUrl: "https://images.unsplash.com/photo-1587269012604-b20cfbca7b16?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=849&q=80"
        }
    ]
},
{
    id: 3,
    title: "Feed Title",
    description: "Feed description....",
    data: [
        {
            id: 1,
            mediaType: "image",
            imgUrl: "https://images.unsplash.com/photo-1473177027534-53d906e9abcf?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1049&q=80"
        },
        {
            id: 2,
            mediaType: "video",
            imgUrl: "http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
        },

    ]
},
{
    id: 4,
    title: "Feed Title",
    description: "Feed description....",
    data: [
        {
            id: 1,
            mediaType: "image",
            imgUrl: "https://images.unsplash.com/photo-1584679109597-c656b19974c9?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80"
        }
    ]
}
]

I don't want to show the player control that's why i hide it.. just like Instagram. I don't know whether i should use this or not.

Present issue is: i should only play the video which is in visible section of user eyes which is in FlatList (i had't mention my flatList code as it is just list_design). i had scroll list with multiple objects with media data in arrays. how can i manage to stop playing id number 1 object of data array with id 2 or 4 active video index when other id number 3's media is in active.

I just want to achieve same as like Instagram post with no performance lagging issues. can anyone please suggest or help me to achieve this.

回答1:

Below did the magic controlling other feed's post media sliders to pause the video.

Add the below two props to your FlatList to get the current visible Index., and when ever the current visible index value changes update in componentDidUpdate and call your videoLoad method.

viewabilityConfig={{viewAreaCoveragePercentThreshold: 200}}
onViewableItemsChanged={this.onViewableItemsChanged}

onViewableItemsChanged = ({ viewableItems, changed }) => {
   if (viewableItems && viewableItems.length > 0) {
        this.setState({ currentVisibleIndex: viewableItems[0].index });
   }
}

componentDidUpdate(prevProps, prevState){
   if (prevProps.currentVisibleIndex !== this.props.currentVisibleIndex) {
         this.setState({ currentVisibleIndex: this.props.currentVisibleIndex }, () => {
            this.onVideoLoad();
         })
         //console.log("Check prevProps: " + prevProps.currentVisibleIndex + "----> Check pevState: " + prevState.currentVisibleIndex);
        }
    }

来源：https://stackoverflow.com/questions/62468832/react-native-videos-in-carousel