React Native "ref" playground

.jsx

import * as React from 'react';
import { Button, Text, TextInput, View, StyleSheet } from 'react-native';
import Constants from 'expo-constants';

// You can import from local files
import AssetExample from './components/AssetExample';

// or any pure javascript modules available in npm
import { Card } from 'react-native-paper';

export default function App() {
  const [text, setText] = React.useState("dummy");
  const form = React.useRef({});
  return (
    <View style={styles.container}>
      <Text style={styles.paragraph}>
        {text}
      </Text>
      <Button title="Copy" onPress={() => setText(form.current.input1())}/>
      <MyComponent form={form.current} formKey="input1" />
    </View>
  );
}

function MyComponent({form, formKey}) {
  return <TextInput 
    ref={ref => { form[formKey] = () => ref._lastNativeText } }
    style={styles.input}
  />
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    paddingTop: Constants.statusBarHeight,
    backgroundColor: '#ecf0f1',
    padding: 8,
  },
  paragraph: {
    margin: 24,
    fontSize: 18,
    fontWeight: 'bold',
    textAlign: 'center',
  },
  input: {
    flex: 1,
    fontSize: 16,
    color: "#000000",
    fontFamily: 'RodchenkoCTT',
    padding: 5,
    borderWidth: 1,
    borderColor: "#000000",
  },
});