React-Native another VirtualizedList-backed container

Question

After upgrading to react-native 0.61 i get a lot of warnings like that:

VirtualizedLists should never be nested inside plain ScrollViews with the same orient         


        

Answer 1

Looking at the examples in docs I've changed container from:

<ScrollView>
    <FlatList ... />
</ScrollView>

to:

<SafeAreaView style={{flex: 1}}>
    <FlatList ... />
</SafeAreaView>

and all those warnings disappeared.

Answer 2

Just in case this helps someone, this is how I fixed the error in my case.

I had a FlatList nested inside a ScrollView:

render() {
    return (
        <ScrollView>
            <Text>{'My Title'}</Text>
            <FlatList
                data={this.state.myData}
                renderItem={({ item }) => {
                    return <p>{item.name}</p>;
                }}
            />
            {this.state.loading && <Text>{'Loading...'}</Text>}
        </ScrollView>
    );
}

and I got rid of the ScrollView by using the FlatList to render everything I needed, which got rid of the warning:

render() {
    const getHeader = () => {
        return <Text>{'My Title'}</Text>;
    };

    const getFooter = () => {
        if (this.state.loading) {
            return null;
        }
        return <Text>{'Loading...'}</Text>;
    };

    return (
        <FlatList
            data={this.state.myData}
            renderItem={({ item }) => {
                return <p>{item.name}</p>;
            }}
            ListHeaderComponent={getHeader}
            ListFooterComponent={getFooter}
        />
    );
}

Answer 3

As @Brahim stated above, setting the horizontal property to true seem to resolve the issues for a FlatList embedded in a ScrollView.