Datepicker

DatePicker
Android Date Picker allows you to select the date consisting of day, month and year in your custom user interface.

activity_main.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.dell.datepicker.MainActivity">
 

<DatePicker         

 android:layout_width="wrap_content"         

android:layout_height="wrap_content"         

android:id="@+id/datePicker" />

</LinearLayout>  

MainActivity.java 

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.DatePicker;
import android.widget.Toast;
import java.util.Calendar;

public class MainActivity extends AppCompatActivity  {
DatePicker datePicker;

@Override 

  protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
    datePicker = (DatePicker) findViewById(R.id.datePicker);
    Calendar calendar = Calendar.getInstance();
    datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), new DatePicker.OnDateChangedListener() { 

@Override 

   public void onDateChanged(DatePicker datePicker, int i, int i1, int i2) {
   Toast.makeText(getApplicationContext(),datePicker.getDayOfMonth() + "-" +datePicker.getMonth() + "-"+datePicker.getYear(),Toast.LENGTH_SHORT).show();
                    }
                });

            }

        }