How to Read and Edit Android Calendar Events Using the New Android 4.0 Ice Cream Sandwich API

How to read and edit Android calendar events using the new Android 4.0 Ice Cream Sandwich API?

Here's code that will let you add an event directly:

import android.content.ContentResolver;
import android.content.ContentValues;
import android.net.Uri;
import android.provider.CalendarContract;

import java.util.Calendar;

// Construct event details
long startMillis = 0;
long endMillis = 0;
Calendar beginTime = Calendar.getInstance();
beginTime.set(2012, 9, 14, 7, 30);
startMillis = beginTime.getTimeInMillis();
Calendar endTime = Calendar.getInstance();
endTime.set(2012, 9, 14, 8, 45);
endMillis = endTime.getTimeInMillis();

// Insert Event
ContentResolver cr = getContentResolver();
ContentValues values = new ContentValues();
TimeZone timeZone = TimeZone.getDefault();
values.put(CalendarContract.Events.DTSTART, startMillis);
values.put(CalendarContract.Events.DTEND, endMillis);
values.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone.getID());
values.put(CalendarContract.Events.TITLE, "Walk The Dog");
values.put(CalendarContract.Events.DESCRIPTION, "My dog is bored, so we're going on a really long walk!");
values.put(CalendarContract.Events.CALENDAR_ID, 3);
Uri uri = cr.insert(CalendarContract.Events.CONTENT_URI, values);

// Retrieve ID for new event
String eventID = uri.getLastPathSegment();

You'll need the CALENDAR_ID, so here's how to query the list of calendars:

Uri uri = CalendarContract.Calendars.CONTENT_URI;
String[] projection = new String[] {
       CalendarContract.Calendars._ID,
       CalendarContract.Calendars.ACCOUNT_NAME,
       CalendarContract.Calendars.CALENDAR_DISPLAY_NAME,
       CalendarContract.Calendars.NAME,
       CalendarContract.Calendars.CALENDAR_COLOR
};

Cursor calendarCursor = managedQuery(uri, projection, null, null, null);

You'll need to request the android.permission.READ_CALENDAR permission for all of this to work.

If you want to avoid having to request permissions, you can also ask the Calendar app to create a new event on your behalf by using an Intent:

Intent intent = new Intent(Intent.ACTION_INSERT)
         .setType("vnd.android.cursor.item/event")
         .putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, beginTime.getTimeInMillis())
         .putExtra(CalendarContract.EXTRA_EVENT_END_TIME, endTime.getTimeInMillis())
         .putExtra(CalendarContract.EXTRA_EVENT_ALL_DAY , false) // just included for completeness
         .putExtra(Events.TITLE, "My Awesome Event")
         .putExtra(Events.DESCRIPTION, "Heading out with friends to do something awesome.")
         .putExtra(Events.EVENT_LOCATION, "Earth")
         .putExtra(Events.RRULE, "FREQ=DAILY;COUNT=10") 
         .putExtra(Events.AVAILABILITY, Events.AVAILABILITY_BUSY)
         .putExtra(Events.ACCESS_LEVEL, Events.ACCESS_PRIVATE)
         .putExtra(Intent.EXTRA_EMAIL, "my.friend@example.com");
startActivity(intent);

Adding Calendar and events in Android 4.0

In ICS you have to use the public Calendar API. Please check the links below:

1. How to read and edit Android calendar events using the new Android 4.0 Ice Cream Sandwich API?

2. http://www.techrepublic.com/blog/app-builder/programming-with-the-android-40-calendar-api-the-good-the-bad-and-the-ugly/825

3. http://android10.org/index.php/articlestrickssecrets/353-android-ics-adding-events-to-the-calendar

4. http://www.vogella.com/articles/AndroidCalendar/article.html

Calendar in Android +4.0

Calendar Api has changed in 4.0+. You can use the new Calendar Intent api (this is the recommended method) or modify your event to fit with the new api:

values.add("eventTimezone","00");
remove the "visibility" key/value, it's not accepted anymore.

You should print the exception in your ExceptionCatcher, it is quite descriptive.

How to add events in Android 4.0 default calendar?

To move to next or previous month you can use this code:

    mButtonNext = (Button) findViewById(R.id.buttonNext);
    mButtonNext.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar cal = new GregorianCalendar();
            cal.setTimeInMillis(mCalendarView.getDate() );
            cal.add(Calendar.MONTH, 1);
            mCalendarView.setDate(cal.getTimeInMillis(), true, true);
        }
    });

    mButtonPrevious = (Button) findViewById(R.id.buttonPrevious);
    mButtonPrevious.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            Calendar cal = new GregorianCalendar();
            cal.setTimeInMillis(mCalendarView.getDate() );
            cal.add(Calendar.MONTH, -1);                
            mCalendarView.setDate(cal.getTimeInMillis(), true, true);
        }
    });

If you want to add an event in the default calendar, you have to see the link @adam2510 posted.
Here is a sample code you can use:

public void addEvent() {   
    ContentResolver cr = mContext.getContentResolver();
    ContentValues eventValues = new ContentValues();
    eventValues.put(Events.TITLE, "title");
    eventValues.put(Events.EVENT_LOCATION, "location");
    eventValues.put(Events.DTSTART, startTimeMilliseconds);
    eventValues.put(Events.DTEND, endTimeMilliseconds);
    eventValues.put(Events.CALENDAR_ID, "1");//Defaul calendar
    eventValues.put(Events.EVENT_TIMEZONE, TimeZone.SHORT);
    cr.insert(Events.CONTENT_URI, eventValues);
}

But CalendarView is not made to be used with events. In Android documentation you can read this for CalendarView:

"This class is a calendar widget for displaying and selecting dates".

I couldn't find an easy way to change cell property.

If you want to add event in your own caledar is better to implement your own calendar where you can change all views' properties. There is plenty of calendar implementations you can find in google.com

How to get Google Calendar events in android using google calendar api?

You need to use Calender Provider for that

and for events look at the link below :

http://developer.android.com/guide/topics/providers/calendar-provider.html#events

Here are some blogs and explaination for the same

http://www.grokkingandroid.com/androids-calendarcontract-provider/

And in this link is shown how to read and edit events in calender provider.

Hope this helps...

How to add calendar events to default calendar, silently without Intent, in android 4?

Here is a working example of what i eventually made it:

ContentResolver cr = ctx.getContentResolver();
ContentValues values = new ContentValues();
    
values.put(CalendarContract.Events.DTSTART, dtstart);
values.put(CalendarContract.Events.TITLE, title);
values.put(CalendarContract.Events.DESCRIPTION, comment);

TimeZone timeZone = TimeZone.getDefault();
values.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone.getID());

// Default calendar
values.put(CalendarContract.Events.CALENDAR_ID, 1);

values.put(CalendarContract.Events.RRULE, "FREQ=DAILY;UNTIL="
        + dtUntill);
// Set Period for 1 Hour
values.put(CalendarContract.Events.DURATION, "+P1H");

values.put(CalendarContract.Events.HAS_ALARM, 1);

// Insert event to calendar
Uri uri = cr.insert(CalendarContract.Events.CONTENT_URI, values);

where dtuntil is

SimpleDateFormat yyyyMMdd = new SimpleDateFormat("yyyyMMdd");
Calendar dt = Calendar.getInstance();

// Where untilDate is a date instance of your choice, for example 30/01/2012
dt.setTime(untilDate);

// If you want the event until 30/01/2012, you must add one day from our day because UNTIL in RRule sets events before the last day
dt.add(Calendar.DATE, 1);
String dtUntill = yyyyMMdd.format(dt.getTime());

Ref: Recurrence Rule

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