React native Flatlist items with negative margin - react-native

Question

I have a simple vertical Flatlist on Android and I would like to render some of its items with a negative margin. The goal is for those items to appear wider than the Flatlist.
Something like this with red being an item of the flatlist:
Unfortunately, the edges of the items are cut by the edge of the Flatlist.
Is there a way to display items that are wider than the Flatlist that renders them?
EDIT:
I know I can achieve the visual on my illustration by adding a margin/padding to every item on the list except the red one. What I would like to know is if it is possible to make a specific item wider than the Flatlist itself (not just wider than the other items)
I would rather stylize the one item that needs to be wider, rather than all the others.

Answer 1

I myself actually never make an item in FlatList with wider scale of the whole flatList cause I know it's a bad idea and it tends to be ugly looking, just imagine an item with an overlapped verticalScrollIndicator. But the better way is that you can add a View like this.
...FlatList tag.....
renderItem={({ item, index }) => {
return (
<View style={{ paddingHorizontal:item.isWider ? 0 : '5%' }}>
....Children
</View>
)
}}
You can also write the statement to work only for some particular item index.
By the way, the scroll indicator will not overlap with any item and it has a controlled and better looking UI.

Answer 2

Whenever you want to render specific items without margin value, the only thing you have to do is override style.
I create a sample application according to your requirements.
import React, { Component } from 'react';
import { SafeAreaView, View, FlatList, StyleSheet, Text } from 'react-native';
const DATA = [
{
id: 1,
title: 'First Item',
},
{
id: 2,
title: 'Second Item',
},
{
id: 3,
title: 'Third Item',
},
{
id: 4,
title: 'Forth Item',
},
{
id: 5,
title: 'Fifth Item',
},
{
id: 6,
title: 'Sixth Item',
},
];
export default class App extends Component {
renderItems = ({ item }) => (
// Suppose if you want to change margin value & background color of id == 3
<View style={item.id !== 3 ? styles.item : [styles.item, { backgroundColor: 'red', margin: 0 }]}>
<Text>{item.title}</Text>
</View>
)
render() {
return (
<SafeAreaView style={styles.container}>
<FlatList
data={DATA}
renderItem={this.renderItems}
keyExtractor={item => item.id}
/>
</SafeAreaView>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
marginTop: 20,
},
item: {
backgroundColor: 'green',
padding: 20,
marginVertical: 8,
marginHorizontal: 16,
},
});
Hope this helps you. Feel free for doubts.

Answer 3

According to the image you provided, and only style the specific list item, I could change align-self, width, and negative margin to achieve what you want.
Apply the specific item
<FlatList
contentContainerStyle={styles.list}
data={data}
renderItem={({ item, index }) => (
<View style={[styles.item, index === 3 && styles.oversize]} />
)}
/>
styles:
oversize: {
backgroundColor: 'orange',
alignSelf: 'stretch',
width: 'auto',
marginHorizontal: -16,
},
Here is working example