React Native DatePicker for Mobile Application - Example

In this section, we will learn how to use DatePicker with  React native application. 

User Interface:



Implementation: 

You must set up your local development environment. Follow the below link to set up your local environment.

After executing the commands mentioned in this link, a folder with a specified name will generate with the following contents.


Add react-native-datepicker-dialogue and moment library inside your project 

npm i react-native-datepicker-dialog --save


npm install --save moment react-moment

 Next, we are going to edit the App.js file and write the below code. 

App.js:

import React, { Component } from 'react';

import { AppRegistry, StyleSheet, Text, View, TouchableOpacity } 
       from 'react-native';

import { DatePickerDialog } from 'react-native-datepicker-dialog'
import moment from 'moment';
export default class App extends Component {
  constructor(props) {
    super(props);
    this.state = {
      DateText: '',
      DateHolder: null,

    }
  }


  DatePickerFunctionCall = () => {

    let DateHolder = this.state.DateHolder;

    if (!DateHolder || DateHolder == null) {

      DateHolder = new Date();
      this.setState({
        DateHolder: DateHolder
      });
    }
   
    this.refs.DatePickerDialog.open({
      date: DateHolder,
    });
  }

  onDatePickedFunction = (date) => {
    this.setState({
      dobDate: date,
      DateText: moment(date).format('DD-MMM-YYYY')
    });
  }

  render() {
    return (
      <View style={styles.container}>

        <Text style={styles.content}>

          React Native Date Picker Example

        </Text>

        <TouchableOpacity onPress=
            {this.DatePickerFunctionCall.bind(this)} >

          <View style={styles.datePickerBox}>

            <Text style={styles.datePickerText}>
                    {this.state.DateText}</Text>

          </View>

        </TouchableOpacity>

        <DatePickerDialog ref="DatePickerDialog" onDatePicked=
                 {this.onDatePickedFunction.bind(this)} />

      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 10,
    backgroundColor: 'purple'
  },

  content: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
    color: 'white'
  },

  datePickerBox: {
    marginTop: 9,
    borderColor: 'white',
    borderWidth: 2,
    padding: 0,
    borderTopLeftRadius: 4,
    borderTopRightRadius: 4,
    borderBottomLeftRadius: 4,
    borderBottomRightRadius: 4,
    height: 38,
    justifyContent: 'center'
  },

  datePickerText: {
    fontSize: 14,
    marginLeft: 5,
    borderWidth: 0,
    color: 'white',

  },
});

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

Explanation:

Engender constructor in your main class with props and define two variables DateText and DateHolder utilizing state

DateHolder is used to get a date from the DatePicker dialogue.
DateText is utilized to show the date on-screen utilizing the Text component.
constructor(props) {
    super(props);
    this.state = {
      DateText: '',
      DateHolder: null,

    }
  }

Engender a function denominated as DatePickerFunctionCall() . This function would call on Text box onPress event. 
DatePickerFunctionCall = () => {

    let DateHolder = this.state.DateHolder;

    if (!DateHolder || DateHolder == null) {

      DateHolder = new Date();
      this.setState({
        DateHolder: DateHolder
      });
    }
    //To open the dialog
    this.refs.DatePickerDialog.open({
      date: DateHolder,
    });
  }

Engender another function designated as onDatePickedFunction() with date argument inside it.Utilizing this function we would set the pick date in the Text component.
onDatePickedFunction = (date) => {
    this.setState({
      dobDate: date,
      DateText: moment(date).format('DD-MMM-YYYY')
    });
  }

View:

render() {
    return (
      <View style={styles.container}>

        <Text style={styles.content}>

          React Native Date Picker Example

        </Text>

        <TouchableOpacity onPress=
              {this.DatePickerFunctionCall.bind(this)} >

          <View style={styles.datePickerBox}>

            <Text style={styles.datePickerText}>
                 {this.state.DateText}</Text>

          </View>

        </TouchableOpacity>

        <DatePickerDialog ref="DatePickerDialog" onDatePicked=
             {this.onDatePickedFunction.bind(this)} />

      </View>
    );
  }
}

Style sheet: 

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 10,
    backgroundColor: 'purple'
  },

  content: {
    fontSize: 20,
    textAlign: 'center',
    margin: 10,
    color: 'white'
  },

  datePickerBox: {
    marginTop: 9,
    borderColor: 'white',
    borderWidth: 2,
    padding: 0,
    borderTopLeftRadius: 4,
    borderTopRightRadius: 4,
    borderBottomLeftRadius: 4,
    borderBottomRightRadius: 4,
    height: 38,
    justifyContent: 'center'
  },

  datePickerText: {
    fontSize: 14,
    marginLeft: 5,
    borderWidth: 0,
    color: 'white',

  },
});


Run the App:

sibinmuhammed@ladmin-H310M-S2:~$ react-native start


sibinmuhammed@ladmin-H310M-S2:~/knf-react-native/KnowledgeFactoryDemo$ react-native run-android

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