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  • Insertion and Deletion of Calendar Events

    We can add events to our android mobiles through our android application using the Calendar Events. This is specially for 2.2 version

    Follow the below steps to do the insertion and deletion operations in Calendar events.

    Step 1:

    Firstof all we need to get the Calendar Name and Id,

    As there is a chance of having many calendar configurations in a mobile, we must find out available calendar's. Using that calendars name and id only we can proceed further

    Cursor cursor=getContentResolver().query(Uri.parse("content://com.android.calendar/calendars"), new String[]{"calendar_id", "displayname"}, null, null, null);
    cursor.moveToFirst();
    // Get calendars name
    String calendarNames[] = new String[cursor.getCount()];
    // Get calendars id
    calendarId = new int[cursor.getCount()];
    for (int i = 0; i < calendarNames.length; i++)
    {
    calendarId[i]
    = cursor.getInt(0);
    calendarNames[i]
    = cursor.getString(1);
    cursor.moveToNext();
    }

    Step 2:

    After getting the name and id of the calendar, we need to add the event

    ContentValues contentEvent = new ContentValues();
    // Particular Calendar in which we need to add Event
    contentEvent.put("calendar_id", calendarIds[0]);
    // Title/Caption of the Event
    contentEvent.put("title", "Wedding");
    // Description of the Event
    contentEvent.put("description", "Wedding Party");
    // Venue/Location of the Event
    contentEvent.put("eventLocation", "New York");
    // Start Date of the Event with Time
    contentEvent.put("dtstart", StartDate);
    // End Date of the Event with Time
    contentEvent.put("dtend", EndDate);
    // All Day Event
    contentEvent.put("allDay", 1);
    // Set alarm for this Event
    contentEvent.put("hasAlarm",1);
    Uri eventsUri
    = Uri.parse("content://com.android.calendar/events");
    // event is added successfully
    getContentResolver().insert(eventsUri, contentEvent);
    cursor.close();

    Step 3:

    If you like to delete the event means we can use this code

    getContentResolver().delete(Uri.parse("content://com.android.calendar/events"), "calendar_id=? and description=? and eventLocation=? ", new String[]{String.valueOf(calendarIds[0]), "Wedding Party", "New York"});

    The same event can be insert or delete in 2.1, for that we can use like this

    Step 1:

    For this we can use the same code as mentioned in the Step 1 of 2.2 version.

    Step 2:

    We need to change the path as "content://calendar/calendars" from "content://com.android.calendar/calendars"

    Step 3:

    Don't take the above 2.2 version code, we need to use like this

    Uri CALENDAR_URI = Uri.parse("content://calendar/events");
    Cursor cursors
    = getContentResolver().query(CALENDAR_URI, null, null, null, null);
    if (cursors.moveToFirst())
    {
    while (cursors.moveToNext())
    {
    String desc
    = cursors.getString(cursors.getColumnIndex("description"));
    String location
    = cursors.getString(cursors.getColumnIndex("eventLocation"));
    // event id
    String id = cursors.getString(cursors.getColumnIndex("_id"));
    if ((desc==null) && (location == null))
    {
    }
    else
    {
    if (desc.equals("Birthday Party") && location.equals("Delhi"))
    {
    Uri uri
    = ContentUris.withAppendedId(CALENDAR_URI, Integer.parseInt(id));
    getContentResolver().delete(uri,
    null, null);
    }
    }
    }
    }

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  • 原文地址:https://www.cnblogs.com/enricozhang/p/1998508.html
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