Develop Reference

Adding event to samsung calendar

I have an issue related to calendar. I am using ContentResolver to add event to calendar. It works pretty well on any devices accept of samsung devices. When I am trying to add event to original samsung calendar nothing happens. But when I downloaded google calendar event added properly to it. Is samsung calendar is regular calendar and how can i use it like primary calendar? Thanks in advance for any help.
private long insertEventTask(Activity activity, CalEvent calEvent) {
ContentResolver contentResolver = activity.getContentResolver();
ContentValues values = new ContentValues();
values.put(CalendarContract.Events.DTSTART, calEvent.getStartMillis());
values.put(CalendarContract.Events.DTEND, calEvent.getEndMillis());
values.put(CalendarContract.Events.TITLE, calEvent.getTitle());
values.put(CalendarContract.Events.DESCRIPTION, calEvent.getDescription());
values.put(CalendarContract.Events.CALENDAR_ID, calEvent.getCalId());
values.put(CalendarContract.Events.EVENT_TIMEZONE, calEvent.getTimezone());
#SuppressLint("MissingPermission")
Uri uri = contentResolver.insert(CalendarContract.Events.CONTENT_URI, values);
Log.e("xxx", "uri is " + uri);
long eventId = Long.parseLong(uri.getLastPathSegment());
return eventId;
}

Android - Adding a calendar event without reminder

I'm using the following function to add an event to calendar:
public String addEventToCalendar(long startDate, long endDate, String recurrenceRule, boolean isAllDay, String title, String description, String location, long calendarID) {
ContentResolver cr = context.getContentResolver();
ContentValues values = new ContentValues();
TimeZone timeZone = TimeZone.getDefault();
values.put(CalendarContract.Events.DTSTART, startDate);
values.put(CalendarContract.Events.DTEND, endDate);
values.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone.getID());
if (recurrenceRule != null)
values.put(CalendarContract.Events.RRULE, recurrenceRule);
values.put(CalendarContract.Events.TITLE, title);
values.put(CalendarContract.Events.DESCRIPTION, description);
values.put(CalendarContract.Events.CALENDAR_ID, calendarID);
values.put(CalendarContract.Events.ALL_DAY, isAllDay);
values.put(CalendarContract.Events.EVENT_LOCATION, location);
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
return null; // we don't have the right permissions
}
Uri uri = cr.insert(CalendarContract.Events.CONTENT_URI, values);
String eventID = uri.getLastPathSegment();
return eventID;
}
It works, but the resulting calendar event, have a 30 minutes reminder! I'm not able to figure out why. Any clue please?
Thanks a lot.

It seems like a default reminder is added after you insert your calendar event.
What you could try is to check if there are any reminder associated with your event right after you inserted it. And delete it if so.
CalendarContract.Reminders.query(contentResolver, eventId, projection)
will give you a list of reminder associated with the eventId
If the Cursor contains any reminder you can delete it with :
getContentResolver().delete(ContentUris.withAppendedId(CalendarContract.Reminders.CONTENT_URI, reminderId), null, null);
docs : http://developer.android.com/reference/android/provider/CalendarContract.Reminders.html

Try to add this
ContentValues values = new ContentValues();
values.put(CalendarContract.Events.HAS_ALARM, 0);
Whether the event has an alarm or not. Column name.
Type: INTEGER (boolean)
public static final String HAS_ALARM = "hasAlarm";

Android: How to correctly use "CalendarAlerts" to display unique message in Alarms

I have created some events and stored the data in sqlite table but not the system calendar. However, i would like to have an alert/reminder for these events, which is similar to other events that stored in the system.
With reference to the code below, the details of the event are put in the "CalendarAlerts" table and in the broadcast receiver, the alertCursor is used to find the event data with start time close to the current time.
The code worked well if the event is stored in the system with a "long" eventID. But when i try to put data of my sqlite event in "CalendarAlerts" with a "string" eventID. It shows that the data is inserted into the table successfully but i would not query back the result in the "Alert Receiver" class.
Searched google for a while and it seems that not many people are talking on the topic of "CalendarAlerts". Great if anyone would share the experience on this issue.
Setting the AlarmManager
Uri alertUri = CalendarAlerts.CONTENT_URI;
long alarmMillis = (long) mStart - (long)(min*60*1000);
ContentValues alertValues =AlertUtils.makeContentValues(eventIdentifier,mStart, mEnd,alarmMillis, 0);
context.getContentResolver().insert(alertUri, alertValues);
public static ContentValues makeContentValues(String eventId, long begin, long end,
long alarmTime, int minutes) {
ContentValues values = new ContentValues();
values.put(CalendarAlerts.EVENT_ID, eventId);
values.put(CalendarAlerts.BEGIN, begin);
values.put(CalendarAlerts.END, end);
values.put(CalendarAlerts.ALARM_TIME, alarmTime);
long currentTime = System.currentTimeMillis();
values.put(CalendarAlerts.CREATION_TIME, currentTime);
values.put(CalendarAlerts.RECEIVED_TIME, 0);
values.put(CalendarAlerts.NOTIFY_TIME, 0);
values.put(CalendarAlerts.STATE, CalendarAlerts.STATE_SCHEDULED);
values.put(CalendarAlerts.MINUTES, minutes);
return values;
}
AlertReceiver.java
Cursor alertCursor = cr.query(CalendarAlerts.CONTENT_URI, ALERT_PROJECTION,
(ACTIVE_ALERTS_SELECTION + currentMillis), ACTIVE_ALERTS_SELECTION_ARGS,
ACTIVE_ALERTS_SORT);

You can use this code which works for me :
ContentResolver cr = getActivity().getContentResolver();
ContentValues values = new ContentValues();
values.put(CalendarContract.Events.DTSTART, startMillis);
values.put(CalendarContract.Events.TITLE, title);
values.put(CalendarContract.Events.DESCRIPTION, "description");
TimeZone timeZone = TimeZone.getDefault();
values.put(CalendarContract.Events.EVENT_TIMEZONE, timeZone.getID());
// default calendar
values.put(CalendarContract.Events.CALENDAR_ID, 1);
//for one hour
values.put(CalendarContract.Events.DURATION, "+P1H");
values.put(CalendarContract.Events.HAS_ALARM, 1);
// cr.delete(CalendarContract.Events.CONTENT_URI, null,null);
// insert event to calendar
Uri uri = cr.insert(CalendarContract.Events.CONTENT_URI, values);

Android calendar URI error

I am creating event on Google calendar from my application.
Somehow it didn't work from one day to an other, it is not inserting it when I request to add the event.
I get the following error :
02-04 20:32:36.975: I/CalendarProvider2(20633): Sending notification
intent: Intent { act=android.intent.action.PROVIDER_CHANGED
dat=content://com.android.calendar }
ERROR :
02-04 20:32:36.975: W/ContentResolver(20633): Failed to get type for:
content://com.android.calendar (Unknown URL
content://com.android.calendar)
Here is my code :
//create note in google calendar
long calID = Long.parseLong(calendarId);
TimeZone timeZone = TimeZone.getDefault();
ContentResolver cr = getContentResolver();
ContentValues values = new ContentValues();
values.put(Events.DTSTART, startMillis);
values.put(Events.DURATION, "PT1H");
values.put(Events.TITLE, content);
values.put(Events.CALENDAR_ID, calID);
values.put(Events.EVENT_TIMEZONE, timeZone.getID());
Uri uri = cr.insert(Events.CONTENT_URI, values);
// get the event ID that is the last element in the Uri
idSync = (int) Long.parseLong(uri.getLastPathSegment());

How to delete a calendar entry?

I'm trying to implement my first android Program. It should write calendar entries (I know, not the best task to begin programming Andorid).
I've tried:
Uri CALENDAR_URI = Uri.parse("content://calendar/events");
ContentResolver cr = getContentResolver();
cr.delete(CALENDAR_URI, null, null); // Delete all
cr.delete(CALENDAR_URI, "calendar_id=1", null); // Delete all in default calendar
cr.delete(CALENDAR_URI, "_id=1", null); // Delete specific entry
Nothing worked. I allays get a "cannot delete that URL".
Inserting an Calendar Entry was simple:
ContentValues values = new ContentValues();
values.put("calendar_id", 1);
values.put("title", this.title);
values.put("allDay", this.allDay);
values.put("dtstart", this.dtstart.toMillis(false));
values.put("dtend", this.dtend.toMillis(false));
values.put("description", this.description);
values.put("eventLocation", this.eventLocation);
values.put("visibility", this.visibility);
values.put("hasAlarm", this.hasAlarm);
cr.insert(CALENDAR_URI, values);
According to my insert method accessing the calendar worked.
Thanks, Arthur!

OK, one thing I didn't try:
Uri CALENDAR_URI = Uri.parse("content://calendar/events");
int id = 1; // calendar entry ID
Uri uri = ContentUris.withAppendedId(CALENDAR_URI, id);
cr.delete(uri, null, null);
This is what I was missing:
Uri uri = ContentUris.withAppendedId(CALENDAR_URI, id);
should lead to content://calendar/events/1
Now my Calendar is empty :-)

The right way to delete things out of a user's calendar is to use the appropriate GData APIs and delete it from their Google Calendar. Manipulating the Calendar application's content provider -- as you are trying to do -- is not part of the public API.