DatePicker Example in Android

MainActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.datepicker.MainActivity">

    <TextView
        android:id="@+id/tv_your_date"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Your Date"
        android:textSize="24dp"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:textColor="@android:color/background_dark"/>

    <Button
        android:id="@+id/btn_select_date"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Select Date"
        android:layout_marginTop="20dp"
        android:textAllCaps="false"
        />
</LinearLayout>

MainActivity.java

package com.example.bhaumik.datepicker;

import android.app.DatePickerDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

import java.util.Calendar;

public class MainActivity extends AppCompatActivity {

    TextView textView;
    Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView = (TextView) findViewById(R.id.tv_your_date);
        button = (Button) findViewById(R.id.btn_select_date);

        Calendar calendar = Calendar.getInstance();

        final int year = calendar.get(Calendar.YEAR);
        final int month = calendar.get(Calendar.MONTH);
        final int day = calendar.get(Calendar.DAY_OF_MONTH);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                DatePickerDialog datePickerDialog = new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
                    @Override
                    public void onDateSet(DatePicker datePicker, int years, int months, int days) {

                        String dates = String.valueOf(days + "/" + (months + 1) + "/" + years);

                        textView.setText(dates);
                    }
                },year,month,day);
                datePickerDialog.show();
            }
        });
    }
}