Deleting events from Calendar not being deleted

Question

I am trying to make my App add reminders to the user\'s Calendar. The code searches for the title and start date to check if the event already exists i

Answer 1

You can also do something like this:

private boolean isEventInCal(Context context, String id) {
    Uri event = ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, Long.parseLong(id));

    Cursor cursor = context.getContentResolver().query(event, null, null, null, null);
    if (cursor != null && cursor.getCount() == 1) {
        //the event exists?
        if (cursor.moveToFirst() && !TextUtils.equals(cursor.getString(cursor.getColumnIndex("deleted")), "1")) {

            cursor.close();
            return true;
        } else {
            return false;
        }
    }
    return false;
}

It works on all the devices.

Answer 2

If its not a URI problem,

Can you try to include in the selection string

AND (deleted != 1)

so the selection string becomes,

String selection = "((" + "calendar_id" + " = 1) AND ("
    + "title" + " LIKE '"+name+"') AND ("
    + "dtstart" + " = "+String.valueOf(c.getTimeInMillis())+") AND ( deleted != 1 ) )";

Occasionally, the CalendarDB takes sometime for the events to be removed. But the 'deleted' COLUMN will be marked as '1' indicating that they will be deleted soon. The reason for the delay maybe the calendar is waiting to be synced

p.s: Try using this tool -- http://www.cellobject.net/Tools/CellObjectSQLiteXMLBrowser.aspx to visualize the Calendar DB. Please check for the 'deleted' and 'dirty' columns in the db

Answer 3

Different versions of android use different URI paths for looking up calendar data. For example, you could use the following constants for android 2.1 and 2.2:

private static final String URI_VERSION_2_1 = "content://calendar/events";
private static final String URI_VERSION_2_2 = "content://com.android.calendar/events";

In 4.0 an different method is preferred:

http://android-developers.blogspot.com/2011/10/ics-and-non-public-apis.html http://developer.android.com/reference/android/provider/CalendarContract.Events.html

There is a good chance that the Galaxy S3 has at least Android 4.0 on it. This change may account for the code working on an S1, but not an S3.