import React, { createRef } from 'react'
import { View, TextInput } from 'react-native'

const textInputRef = createRef() // ref object. Has an instance so that it can save the ref info of your node, yeah

const onChangeText = text => { // floating function
  if (textInputRef.current) {
    textInputRef.current.setNativeProps({ text })
  }
}

const SampleSFC = () => (
  <View>
    <TextInput
      ref={textInputRef}
      onChangeText={onChangeText}
    />
  </View>
)