Content hidden behind TabBarIOS with React Native - ios

Question

I'm building an iOS app with React Native and am implementing a TabBarIOS. The content on the tabs seems to flow behind and be obscured by the bar. In xcode I would have just unchecked the "extend edges" boxes but am not sure how to do this with React Native.
Here's an abbreviated version of what I'm trying to do. The <View> from CreateUser flows behind the tab bar. Is there an easy way to make sure content doesn't get obscured by the tab bar?
import React from 'react'
import {
StyleSheet,
Text,
TextInput,
View,
TouchableHighlight,
} from 'react-native'
export default class TabBar extends React.Component {
state = {
selectedTab: 'list'
}
render() {
return (
<TabBarIOS selectedTab={this.state.selectedTab}
unselectedTintColor="#ffffff"
tintColor="#ffe429"
barTintColor="#294163">
<TabBarIOS.Item
title="My List"
systemIcon="bookmarks"
selected={this.state.selectedTab==='list'}
onPress={() => {
this.setState({
selectedTab: 'list',
});
}}
>
<CreateUser />
</TabBarIOS.Item>
</TabBarIOS>
);
}
}
var styles = StyleSheet.create({
tabContent: {
flex: 1,
alignItems: 'center',
},
tabText: {
color: 'darkslategrey',
margin: 50,
},
});
export default class CreateUser extends React.Component{
render(){
return (
<View style={styles.container}>
<TouchableHighlight style={styles.button}>
<Text style={styles.buttonText}>LOG IN</Text>
</TouchableHighlight>
</View>
)
}
}
var styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: "column",
justifyContent: "flex-end",
alignItems: 'center',
},
button: {
backgroundColor: "#ffe429",
borderRadius: 3,
height: 60,
width: 200,
margin: 7,
//flex: 1,
alignItems: "center",
justifyContent: "center",
},
buttonText: {
color: "#294163",
}
})

Answer 1

This was a problem for me when using a NavigatorIOS component that then rendered it's initialRoute component which contained a TabBarIOS component.
If this is the case for your scenario, you can fix it by using a ScrollView:
Add the flex layout style to your NavigatorIOS:
<NavigatorIOS
initialRoute={{
component: MyView,
title: 'My View',
}}
style={{flex: 1}}
/>
Use a ScrollView:
<TabBarIOS>
<TabBarIOS.Item
systemIcon="history"
title="A Tab">
<ScrollView>
<Text>
Hello World
</Text>
</ScrollView>
</TabBarIOS.Item>
</TabBarIOS>

Answer 2

In my case I needed to add flex: 1 to the style props for the top-level View of the screen.
RN Navigation docs
//MyScreen.tsx
export default () => (
<View style={{ flex: 1 }}>
...
</View>
)