In this example creating a date picker to pick day month year of date.

In this example creating a date picker to pick day , month , year of date.

Project Structure :

File : res/layout/main.xml

    
 <?xml version="1.0" encoding="utf-8"?> 
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Buttonh
        android:id="@+id/changeDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Click To Change Date" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Current/Selected Date (M-D-YYYY): "
        android:textAppearance="?android:attr/textAppearanceLarge" />
  
    <TextView
        android:id="@+id/Output"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text=""
        android:textAppearance="?android:attr/textAppearanceLarge" />

  </LinearLayout>  
 

File : src/DatePickerExample.java

import java.util.Calendar;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

public class DatePickerExample extends Activity {

	private TextView Output;
	private Button changeDate;

	private int year;
	private int month;
	private int day;

	static final int DATE_PICKER_ID = 1111; 

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		Output = (TextView) findViewById(R.id.Output);
		changeDate = (Button) findViewById(R.id.changeDate);

		// Get current date by calender
		
		final Calendar c = Calendar.getInstance();
		year  = c.get(Calendar.YEAR);
		month = c.get(Calendar.MONTH);
		day   = c.get(Calendar.DAY_OF_MONTH);

		// Show current date
		
		Output.setText(new StringBuilder()
				// Month is 0 based, just add 1
				.append(month + 1).append("-").append(day).append("-")
				.append(year).append(" "));
 
		// Button listener to show date picker dialog
		
		changeDate.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
                
				// On button click show datepicker dialog 
				showDialog(DATE_PICKER_ID);

			}

		});
   }

	
	@Override
	protected Dialog onCreateDialog(int id) {
		switch (id) {
		case DATE_PICKER_ID:
			
			// open datepicker dialog. 
			// set date picker for current date 
			// add pickerListener listner to date picker
			return new DatePickerDialog(this, pickerListener, year, month,day);
		}
		return null;
	}

	private DatePickerDialog.OnDateSetListener pickerListener = new DatePickerDialog.OnDateSetListener() {

		// when dialog box is closed, below method will be called.
		@Override
		public void onDateSet(DatePicker view, int selectedYear,
				int selectedMonth, int selectedDay) {
			
			year  = selectedYear;
			month = selectedMonth;
			day   = selectedDay;

			// Show selected date 
			Output.setText(new StringBuilder().append(month + 1)
					.append("-").append(day).append("-").append(year)
					.append(" "));
	
		   }
	    };
}