DatePickerRN.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Button,
  DatePickerAndroid
} from 'react-native';

export default class test extends Component {
  show = async () => {
    try {
      const {action, year, month, day} = await DatePickerAndroid.open({
        // Use `new Date()` for current date.
        // May 25 2020. Month 0 is January.
        date: new Date(2020, 4, 25)
      });
      if (action !== DatePickerAndroid.dismissedAction) {
        // Selected year, month (0-11), day
      }
    } catch ({code, message}) {
      console.warn('Cannot open date picker', message);
    }
  }
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>
          Welcome to React Native!
        </Text>
        <Button title="DatePicker" onPress={this.show}>Date Picker Open
        </Button>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#F5FCFF',
  },
  welcome: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
  },
  instructions: {
    textAlign: 'center',
    color: '#333333',
    marginBottom: 5,
  },
});

AppRegistry.registerComponent('test', () => test);