import React, { Component } from 'react'; 
import { Keyboard, TextInput } from 'react-native'; 
 
class Example extends Component { 
 componentWillMount () { 
  this.keyboardDidShowListener = Keyboard.addListener('keyboardDidShow', this._keyboardDidShow); 
  this.keyboardDidHideListener = Keyboard.addListener('keyboardDidHide', this._keyboardDidHide); 
 } 
 
 componentWillUnmount () { 
  this.keyboardDidShowListener.remove(); 
  this.keyboardDidHideListener.remove(); 
 } 
 
 _keyboardDidShow () { 
  alert('Keyboard Shown'); 
 } 
 
 _keyboardDidHide () { 
  alert('Keyboard Hidden'); 
 } 
 
 render() { 
  return ( 
   <TextInput 
    onSubmitEditing={Keyboard.dismiss} 
   /> 
  ); 
 } 
} 

@param {string} nativeEvent The `nativeEvent` is the string that identifies the event you're listening for. This can be any of the following: 
- `keyboardWillShow` 
- `keyboardDidShow` 
- `keyboardWillHide` 
- `keyboardDidHide` 
- `keyboardWillChangeFrame` 
- `keyboardDidChangeFrame` 

/** 
 * Dismisses the active keyboard and removes focus. 
 */ 
dismiss () { 
 dismissKeyboard(); 
} 

const dismissKeyboard = require('dismissKeyboard'); 
dismissKeyboard();