Calendar Application

This example explains how to call and use system calendar into your application.

Algorithm:

1.) Create a new project by File-> New -> Android Project name it CalendarApplication.

2.) Write following into main.xml file:

<!--?xml version="1.0" encoding="utf-8"?-->
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="Create Event" />

<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="queryCalendar"
android:text="Query Calendar" />

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<Button

android:id="@+id/button1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:onClick="onClick"

android:text="Create Event" />

<Button

android:id="@+id/button2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:onClick="queryCalendar"

android:text="Query Calendar" />

3.) Put INTERNET permission to manifest file:

<uses-permission
android:name="android.permission.READ_CALENDAR">

<uses-permission
android:name="android.permission.WRITE_CALENDAR">

<uses-permission

android:name="android.permission.READ_CALENDAR">

<uses-permission

android:name="android.permission.WRITE_CALENDAR">

4.) Run for output.

Steps:

1.) Create a project named CalendarApplication and set the information as stated in the image.

Build Target: Android 4.0

Application Name: CalendarApplication

Package Name: com. example. CalendarApplication

Activity Name: CalendarApplicationActivity

Min SDK Version: 14

2.) Open CalendarApplicationActivity.java file and write following code there:

package com.example.CalendarApplication;

import java.util.GregorianCalendar;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.CalendarContract;
import android.provider.CalendarContract.Calendars;
import android.provider.CalendarContract.Events;
import android.view.View;
import android.widget.Toast;

public class CalendarApplicationActivity extends Activity {

public static final String[] EVENT_PROJECTION = new String[] {
Calendars._ID, // 0
Calendars.ACCOUNT_NAME, // 1
Calendars.CALENDAR_DISPLAY_NAME // 2
};

private static final int PROJECTION_DISPLAY_NAME_INDEX = 2;

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

public void onClick(View view) {

Intent intent = new Intent(Intent.ACTION_INSERT);
intent.setType("vnd.android.cursor.item/event");
intent.putExtra(Events.TITLE, "Learn Android");
intent.putExtra(Events.EVENT_LOCATION, "Home suit home");
intent.putExtra(Events.DESCRIPTION, "Download Examples");

GregorianCalendar calDate = new GregorianCalendar(2012, 10, 02);
intent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME,
calDate.getTimeInMillis());
intent.putExtra(CalendarContract.EXTRA_EVENT_END_TIME,
calDate.getTimeInMillis());

intent.putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY, true);

intent.putExtra(Events.RRULE,
"FREQ=WEEKLY;COUNT=11;WKST=SU;BYDAY=TU,TH");

intent.putExtra(Events.ACCESS_LEVEL, Events.ACCESS_PRIVATE);
intent.putExtra(Events.AVAILABILITY, Events.AVAILABILITY_BUSY);

startActivity(intent);

}

public void queryCalendar(View view) {
Cursor cur = null;
ContentResolver cr = getContentResolver();
Uri uri = Calendars.CONTENT_URI;
String selection = "((" + Calendars.ACCOUNT_NAME + " = ?) AND ("
+ Calendars.ACCOUNT_TYPE + " = ?))";

String[] selectionArgs = new String[] { "Lars.Vogel@gmail.com",
"com.google" };
cur = cr.query(uri, EVENT_PROJECTION, selection, selectionArgs, null);

while (cur.moveToNext()) {
String displayName = null;
displayName = cur.getString(PROJECTION_DISPLAY_NAME_INDEX);
Toast.makeText(this, "Calendar " + displayName, Toast.LENGTH_SHORT)
.show();
}
}
}

package com.example.CalendarApplication;

import java.util.GregorianCalendar;

import android.app.Activity;

import android.content.ContentResolver;

import android.content.Intent;

import android.database.Cursor;

import android.net.Uri;

import android.os.Bundle;

import android.provider.CalendarContract;

import android.provider.CalendarContract.Calendars;

import android.provider.CalendarContract.Events;

import android.view.View;

import android.widget.Toast;

public class CalendarApplicationActivity extends Activity {

public static final String[] EVENT_PROJECTION = new String[] {

Calendars._ID, // 0

Calendars.ACCOUNT_NAME, // 1

Calendars.CALENDAR_DISPLAY_NAME // 2

};

private static final int PROJECTION_DISPLAY_NAME_INDEX = 2;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

}

public void onClick(View view) {

Intent intent = new Intent(Intent.ACTION_INSERT);

intent.setType("vnd.android.cursor.item/event");

intent.putExtra(Events.TITLE, "Learn Android");

intent.putExtra(Events.EVENT_LOCATION, "Home suit home");

intent.putExtra(Events.DESCRIPTION, "Download Examples");

GregorianCalendar calDate = new GregorianCalendar(2012, 10, 02);

intent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME,

calDate.getTimeInMillis());

intent.putExtra(CalendarContract.EXTRA_EVENT_END_TIME,

calDate.getTimeInMillis());

intent.putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY, true);

intent.putExtra(Events.RRULE,

"FREQ=WEEKLY;COUNT=11;WKST=SU;BYDAY=TU,TH");

intent.putExtra(Events.ACCESS_LEVEL, Events.ACCESS_PRIVATE);

intent.putExtra(Events.AVAILABILITY, Events.AVAILABILITY_BUSY);

startActivity(intent);

}

public void queryCalendar(View view) {

Cursor cur = null;

ContentResolver cr = getContentResolver();

Uri uri = Calendars.CONTENT_URI;

String selection = "((" + Calendars.ACCOUNT_NAME + " = ?) AND ("

+ Calendars.ACCOUNT_TYPE + " = ?))";

String[] selectionArgs = new String[] { "[email protected]",

"com.google" };

cur = cr.query(uri, EVENT_PROJECTION, selection, selectionArgs, null);

while (cur.moveToNext()) {

String displayName = null;

displayName = cur.getString(PROJECTION_DISPLAY_NAME_INDEX);

Toast.makeText(this, "Calendar " + displayName, Toast.LENGTH_SHORT)

.show();

}

3.) Compile and build the project.

Output

5.) If your phone doesn’t have any default calendar installed you will see the screen as below. Follow the instructions and see your calendar.

Calendar Application

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