TextInput.js

import React from 'react';
import { View, TextInput as Input, Text } from 'react-native';
import { ErrorMessage } from 'formik';

export default function TextInput(props) {
  console.log(props);
  return (
    <View>
      <Input
        onChangeText={props.form.handleChange(props.field.name)}
        onBlur={props.form.handleBlur(props.field.name)}
        value={props.field.value}
      />
      <ErrorMessage
        name={props.field.name}
        render={msg => (
          <View style={{ color: 'red' }}>
            <Text>{msg}</Text>
          </View>
        )}
      />
    </View>
  );
}