JAVASCRIPT

react forwardref

const FancyButton = React.forwardRef((props, ref) => (
  <button ref={ref} className="FancyButton">
    {props.children}
  </button>
));

// You can now get a ref directly to the DOM button:
const ref = React.createRef();
<FancyButton ref={ref}>Click me!</FancyButton>;

react forward ref

const Container = React.forwardRef((props, ref) => {
  return <div ref={ref}>{props.children}</div>
})

const App = () => {
  const elRef = React.useRef();

  React.useEffect(() => {
    console.log(elRef);
   elRef.current.style.background = 'lightblue';
  }, [elRef])

  return (
    <Container ref={elRef}/>
  );

Forward Ref React Native Example

import { StatusBar } from 'expo-status-bar';
import { StyleSheet, Text, View, Button, TouchableOpacity } from 'react-native';
import React from 'react';

export default function App() {
function q()
{

  console.log(hello.current.props.title);
}
  const hello = React.createRef();
    return (
    <View style={styles.container}>

<TouchableOpacity  onPress={()=>q()}>
<Text>
 Invoke Fancy Button
  </Text>

</TouchableOpacity>
<FancyButton ref={hello}/>  
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#fff',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

const FancyButton = React.forwardRef((props, ref) => (
  <Button ref={ref} id="myId" title="FancyButton" />
 
));