react-native-ASHTextView/index.js

import React, {Component} from 'react';
import {Platform, TextInput} from 'react-native';

class RNFixTextVieW extends Component {
  shouldComponentUpdate(nextProps){

    return Platform.OS !== 'ios' || (this.props.value === nextProps.value &&  
           (nextProps.defaultValue == undefined || nextProps.defaultValue == '' )) || 
           (this.props.defaultValue === nextProps.defaultValue &&  (nextProps.value == undefined || nextProps.value == '' ));
  
  }

  render() {
    return <TextInput {...this.props} />;
  }
};

export default RNFixTextVieW;