Android Date Picker Tutorial

Android Date Picker Tutorial

In this tutorial i'm going to show you how date picker in the android works.The following steps show how it works.

1.Create a Project called DatePickerExample

              Project Name    :  DatePickerExample

             Package              :  com.roney.DatePickerExample;

            Main Activity     :  DatePickerExample.java

            Build Target       :  Android 4.0

2.Create a datepicker.xml file in res/layout.

     For the beginners,am requesting to refer the default code of date picker.

Refer:Drag & drop elements in Time & Date

3.Put the given bellow code in datepicker.xml file.

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

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

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:orientation="horizontal">

 <TextView android:id="@+id/dateDisplay"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:paddingLeft="4dip"

            android:text="@string/hello"/>

        <Button android:id="@+id/pickDate"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:paddingLeft="4dip"

            android:text="@string/hello"/>    

</LinearLayout>




4.Inorder to create datepicker,we need to import some packages.They are:




import java.util.Calendar;

import android.app.DatePickerDialog;

import android.widget.DatePicker;




5.Put the bellow code to DatePickerExample.java file in src.




package com.roney.DatePickerExample;

import android.app.Activity;

import java.util.Calendar;

import android.app.DatePickerDialog;

import android.widget.DatePicker;

import android.app.Dialog;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class DatePickerExample extends Activity 
{

    private TextView mDateDisplay;

    private int mYear;

    private int mMonth;

    private int mDay;

    static final int DATE_DIALOG_ID = 1;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

       setContentView(R.layout.date_picker);

        mDateDisplay = (TextView) findViewById(R.id.dateDisplay);

        Button pickDate = (Button) findViewById(R.id.pickDate);

        pickDate.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {

                showDialog(DATE_DIALOG_ID);

            }

        });

        final Calendar c = Calendar.getInstance();

        mYear = c.get(Calendar.YEAR);

        mMonth = c.get(Calendar.MONTH);

        mDay = c.get(Calendar.DAY_OF_MONTH);

        updateDisplay();

    }

   @Override

    protected Dialog onCreateDialog(int id) {

        switch (id) {

        case DATE_DIALOG_ID:


            return new DatePickerDialog(this,

                mDateSetListener,

               mYear, mMonth, mDay);

        }

        return null;

    }

    protected void onPrepareDialog(int id, Dialog dialog) {

        switch (id) {

        case DATE_DIALOG_ID:

        ((DatePickerDialog) dialog).updateDate(mYear, mMonth, mDay);

            break;

        }

    }   

    private void updateDisplay() {


        mDateDisplay.setText(

            new StringBuilder()

            // Month is 0 based so add 1

            .append(mMonth + 1).append("-")

            .append(mDay).append("-")

           .append(mYear).append(" "));

   }

    private DatePickerDialog.OnDateSetListener mDateSetListener =

        new DatePickerDialog.OnDateSetListener() {

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

                int dayOfMonth) {

            mYear = year;

            mMonth = monthOfYear;

            mDay = dayOfMonth;

            updateDisplay();

        }

    };

}

6.Output is shown bellow




If you need to run this application in the android smartphone

Refer:How to run application in the android smartphone

Hope you understand how it works.

" Ask your doubts and comments please "