Android

Android DatePickerDialog Example
Author : Ishtek

Using Android API Level : 7 
In this tutorial we shall be covering Android's DatePickerDialog API with the help
of an example.

Final screen of this DatePickerDialog example would look like the below image:


In the following section I shall be covering through various files I coded/used
to get this example working. This example has only two views such as a EditView
and a DatePickerDialog widget from Android API.

Following is the main layout of this example.

main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <LinearLayout android:layout_width="fill_parent" android:id="@+id/linearLayout1" android:layout_height="wrap_content"> <EditText android:text="" android:minWidth="20dip" android:id="@+id/textView1" android:layout_height="wrap_content" android:layout_width="wrap_content" android:width="150dip" android:height="40dip"> </EditText> <Button android:text="Calendar" android:layout_width="wrap_content" android:id="@+id/button1" android:layout_height="wrap_content" android:height="40dip"></Button> </LinearLayout> </LinearLayout>
Below file will give you some additional information like which version of Android API I am using for this example, such as minSdkVersion, intent-filters, activity name etc. AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.techienjoy.alertdialog.example" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="7" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AlertDialogsExample" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
AlertDialogsExample.java
package com.techienjoy.alertdialog.example; import java.util.Calendar; import java.util.StringTokenizer; import android.app.Activity; import android.app.DatePickerDialog; import android.content.Context; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.DatePicker; import android.widget.EditText; public class AlertDialogsExample extends Activity { private EditText txtView; private String initialDate; private String initialMonth; private String initialYear; private DatePickerDialog dialog = null; Context context; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btn = (Button) findViewById(R.id.button1); txtView = (EditText) findViewById(R.id.textView1); context = getApplicationContext(); btn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Calendar dtTxt = null; String preExistingDate = (String) txtView.getText().toString(); if(preExistingDate != null && !preExistingDate.equals("")){ StringTokenizer st = new StringTokenizer(preExistingDate,"/"); initialMonth = st.nextToken(); initialDate = st.nextToken(); initialYear = st.nextToken(); if(dialog == null) dialog = new DatePickerDialog(v.getContext(), new PickDate(),Integer.parseInt(initialYear), Integer.parseInt(initialMonth)-1, Integer.parseInt(initialDate)); dialog.updateDate(Integer.parseInt(initialYear), Integer.parseInt(initialMonth)-1, Integer.parseInt(initialDate)); } else { dtTxt = Calendar.getInstance(); if(dialog == null) dialog = new DatePickerDialog(v.getContext(),new PickDate(),dtTxt.getTime().getYear(),dtTxt.getTime().getMonth(), dtTxt.getTime().getDay()); dialog.updateDate(dtTxt.getTime().getYear(),dtTxt.getTime().getMonth(), dtTxt.getTime().getDay()); } dialog.show(); } }); } private class PickDate implements DatePickerDialog.OnDateSetListener { @Override public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) { view.updateDate(year, monthOfYear, dayOfMonth); txtView.setText(monthOfYear+"/"+dayOfMonth+"/"+year); dialog.hide(); } } }
Above source code is just to accomplish this example and get working as soon as possible. DatePickerDialog widget from Android API can be used as it is as I have shown in the source code above. inner class PickDate is used for receiving any callback on date set button is clicked.
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Name: girishDated: 2013-10-27 08:48:48
Is there any ways to decorate the datepickerDialog as per the theme of the application I am writing,
rather than to have a default look for the datepicker dialog.
Please help.    
Name: IshtekDated: 2013-12-29 10:42:37
Nice question on the line of providing customized Theme for the DatePickerDialog widget,
I am working on this, would share code once done.

Name: jayDated: 2014-03-31 17:58:37
Nice Example.It is Simple and Interesting
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Name: SurendraDated: 2013-12-29 10:08:23
Nice tutorial.. Thanks a lot    
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Name: AakashDated: 2014-09-05 13:53:47
how to add the initial value to the datepicker dialog such as current date.    
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