FormField.js

import React from 'react';
import { FieldArray } from 'formik';
import { View, Button } from 'react-native';
import CustomCheckBox from './CustomCheckBox';

export default props => (
  <View>
    <FieldArray name="languages">
      { arrayHelpers => <View><CustomCheckBox arrayHelpers={arrayHelpers} {...props} /></View> }
    </FieldArray>
    <Button onPress={props.handleSubmit} title="Submit" />
  </View>
);