create a full-width View with alignItems: "center" then insert desired children inside.
import React from "react";
import {View} from "react-native";
export default class AbsoluteComponent extends React.Component {
render(){
return(
<View style={{position: "absolute", left: 0, right: 0, alignItems: "center"}}>
{this.props.children}
</View>
)
}
}
you can add properties like bottom: 30 for bottom aligned component.