how we can use DatePickerDialog in android

Ashwani Yadav

29 January 2021

In this blog we will read how we can use DatePickerDialog in android . DatePikcerDialog in android allows user to select date . DatePickerDialog allows user to select day,month and year in our application.

activity_main.xml

In xml file we will use a button and a Textview . when user click on button he will see a Dialog and he can select date from that dialog. Which date user select will be visible in text view and you can see complete code for activity_main.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:app="http://schemas.android.com/apk/res-auto"

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="match_parent"

android:orientation="vertical"

android:layout_height="match_parent"

tools:context=".MainActivity">

<Button

android:layout_width="wrap_content"

android:id="@+id/date_picker"

android:text="@string/select_date"

android:layout_centerHorizontal="true"

android:layout_centerVertical="true"

android:layout_height="wrap_content"/>

<TextView

android:layout_width="wrap_content"

android:text="@string/select_date"

android:id="@+id/text"

android:layout_height="wrap_content"/>

</RelativeLayout>

DatePickerDialog select date from instance of Calendar so we use get Instance method. check below code and See how can we get instance of Calendar.

1	final Calendar myCalendar = Calendar.getInstance();

If you want to set date so use OnDateSetListener() interface .check and see below to set date from date picker dialog.

DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener() {

@Override

public void onDateSet(DatePicker view, int year, int monthOfYear,

int dayOfMonth) {

myCalendar.set(Calendar.YEAR, year);

myCalendar.set(Calendar.MONTH, monthOfYear);

myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

TextView editText= findViewById(R.id.text);

editText.setText(dayOfMonth+" "+monthOfYear +" "+year);

}

};

Initialize date picker dialog and send needed parameter .

DatePickerDialog datePickerDialog= new DatePickerDialog(this,R.style.DialogTheme, date, myCalendar

.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),myCalendar.get(Calendar.DAY_OF_MONTH));

datePickerDialog.show();

MainActivity

In MainActivity you can we use a click listener when you click on button it will show a dialog and here you can select date.

package com.example.datepicker;

import androidx.appcompat.app.AppCompatActivity;

import android.app.DatePickerDialog;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

final Calendar myCalendar = Calendar.getInstance();

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button datePickerBtn=(Button) findViewById(R.id.date_picker);
        datePickerBtn.setOnClickListener(this);

}

DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener() {

@Override
        public void onDateSet(DatePicker view, int year, int monthOfYear,
                              int dayOfMonth) {
            myCalendar.set(Calendar.YEAR, year);
            myCalendar.set(Calendar.MONTH, monthOfYear);
            myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            TextView editText= findViewById(R.id.text);
            editText.setText(dayOfMonth+" "+monthOfYear +" "+year);
        }
    };

@Override
    public void onClick(View v) {
        DatePickerDialog datePickerDialog=  new DatePickerDialog(this,R.style.DialogTheme, date, myCalendar
                .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),myCalendar.get(Calendar.DAY_OF_MONTH));
        datePickerDialog.show();

}
}

package com.example.datepicker;

import androidx.appcompat.app.AppCompatActivity;

import android.app.DatePickerDialog;

import android.graphics.Color;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.DatePicker;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

final Calendar myCalendar = Calendar.getInstance();

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button datePickerBtn=(Button) findViewById(R.id.date_picker);

datePickerBtn.setOnClickListener(this);

}

DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener() {

@Override

public void onDateSet(DatePicker view, int year, int monthOfYear,

int dayOfMonth) {

myCalendar.set(Calendar.YEAR, year);

myCalendar.set(Calendar.MONTH, monthOfYear);

myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);

TextView editText= findViewById(R.id.text);

editText.setText(dayOfMonth+" "+monthOfYear +" "+year);

}

};

@Override

public void onClick(View v) {

DatePickerDialog datePickerDialog= new DatePickerDialog(this,R.style.DialogTheme, date, myCalendar

.get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),myCalendar.get(Calendar.DAY_OF_MONTH));

datePickerDialog.show();

}

You can change background color and button colors. In style you can provide negative button and positive button .

styles.xml

<item name="android:buttonBarNegativeButtonStyle" >@style/NegativeButtonStyle</item>

<item name="android:buttonBarPositiveButtonStyle">@style/NegativeButtonStyle</item>

</style>

</style>

And here you can check screenshot of date Picker how it will show

So here we discussed about how we can use DatePickerDialog in android . Thanks for reading this blog and You can get other blogs from here