Using android Date Picker

2


This is a sample activity which shows how to use Date picker control.

Underlying Algorithm:

Basic description of algorithm in step by step form:
1.) Create a Project DatePickerExample.
2.) Create a date_picker.xml in res/layout.
3.) Put the following code in date_picker.xml :

<?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.) To create a date picker control we need the following imports :

import java.util.Calendar;
import android.app.DatePickerDialog;
import android.widget.DatePicker; 

5.) Run the application.

Steps to Create:

1.) Open Eclipse. Use the New Project Wizard and select Android Project Give the respective project name i.e. DatePickerExample. Enter following information:
Project name: DatePickerExample
Build Target: Google APIs
Application name: DatePickerExample
Package name: com.sample.DatePickerExample
Create Activity: DatePickerExample

On Clicking Finish DatePickerExample code structure is generated with the necessary Android Packages being imported along with DatePickerExample.java. DatePickerExample class will look like following:

package com.sample.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();
		}
	};
}

Output –The final output:

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  • Arif

    Thanks dude,that worked well…….

    just wanted to know the other thing how will i embed this date function with other application of android

  • http://edumobile.org Sushant

    You can call below lines anywhere in other android application and use mYear/mMonth/mDay to play with date.

    final Calendar c = Calendar.getInstance();
    mYear = c.get(Calendar.YEAR);
    mMonth = c.get(Calendar.MONTH);
    mDay = c.get(Calendar.DAY_OF_MONTH);
    

    I hope I am getting you correctly.

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