React native, children of ScrollView wont fill full height - flexbox

Question

So I have a horizontal scrollview at the top of the view. The ScrollView contains nodes that have a specified width. I then have a border on the bottom of the ScrollView, like you can see in this screen cap: http://i.imgur.com/pOV1JFP.png
As you can see the child nodes of the ScrollView at the top don't reach the border. However, if I change the ScrollView to a View with flexDirection: 'row', then the child nodes fill the height fine. I've tried changing a few properties on the scrollview, such as:
Setting padding:0 on contentContainerStyle
automaticallyAdjustContentInsets={false}
Changing the values of contentInsets directly
None of those seem to fix the issue.
The scrollview code & style:
var styles = StyleSheet.create({
nav: {
padding: 0,
marginTop: 30,
flex: 1,
borderBottomWidth: 1,
borderColor: '#000000'
}
});
<ScrollView
style={[{width: screen.width}, styles.nav]}
horizontal={true}
showsHorizontalScrollIndicator={true}
automaticallyAdjustContentInsets={false}>
{dayNavItems}
</ScrollView>
The child components (makes up dayNavItems)
const styles = StyleSheet.create({
container: {
paddingLeft: 15,
paddingRight: 15,
width: 50,
justifyContent: 'center'
},
odd: {
backgroundColor: '#ccc'
},
selected: {
backgroundColor: '#39b54a'
},
text: {
fontFamily: 'Optima'
}
});
class DayNavItem extends React.Component {
static propTypes = {
day: React.PropTypes.object.isRequired,
odd: React.PropTypes.bool,
selectDay: React.PropTypes.func.isRequired,
selected: React.PropTypes.bool
};
render() {
const d = new Date(this.props.day.created_at);
const viewStyles = [styles.container];
if (this.props.selected) {
viewStyles.push(styles.selected);
} else if (this.props.odd) {
viewStyles.push(styles.odd);
}
return (
<TouchableOpacity style={viewStyles} onPress={() => this.props.selectDay(this.props.day.uuid)}>
<View>
<Text style={styles.text}>{getMonth(d)}</Text>
<Text style={styles.text}>{d.getDate()}</Text>
</View>
</TouchableOpacity>
);
}
}

Answer 1

Adding contentContainerStyle={{flexGrow: 1}} will do the trick.
<ScrollView contentContainerStyle={{flexGrow: 1}}>
</ScrollView>

Answer 2

There is a property called contentContainerStyle for ScrollView. I just solved a similar issue where I set flex: 1 to the ScrollView's styles, ScrollView's contentContainerStyle, and the child View component.

Answer 3

The other answers are correct, but just to provide a clarifying example:
<ScrollView contentContainerStyle={{ flex: 1 }}>
{children}
</ScrollView>

Answer 4

Setting flex: 1 for ScrollView's contentContainerStyle property did the trick for me.

Answer 5

I always end up creating this component in all my projects:
import * as React from 'react'
import { ScrollView, ScrollViewProps, StyleSheet } from 'react-native'
export function FullHeightScrollView(
props: {
children: React.ReactNode
} & Omit<ScrollViewProps, 'contentContainerStyle'>
) {
return (
<ScrollView contentContainerStyle={styles.grow} {...props}>
{props.children}
</ScrollView>
)
}
const styles = StyleSheet.create({
grow: { flexGrow: 1 },
})
Use it in place of React Native's ScrollView.

Answer 6

If ScrollView is wrapped inside of a SafeAreaView, put flex: 1 on SafeAreaView, this did the trick for me after hours of debugging...
Parent:
Child (styles ScrollView I implemented has nothing to do with the current issue you reported):

Answer 7

I have made a simple package for those who just want, like me, a working out of the box ScrollView, without having to apply all the time the styles to make it work properly.
https://github.com/SrBrahma/pagescrollview
Usage:
import { PageScrollView } from 'pagescrollview';
<PageScrollView>
{/** Your contents */}
</PageScrollView>