如何从android中的事件中删除提醒？

Question

When I set a reminder for an event can not remove it! I've already test this code:

Uri reminderUri = ContentUris.withAppendedId(CalendarContract.Reminders.CONTENT_URI, reminder.id);
context.getContentResolver().update(reminderUri, getEmptyReminderContentValues(reminder), null, null);
context.getContentResolver().delete(reminderUri, null, null);

I seen some calendars include google calendar do this but some of them do not. Anyone can help me?

Answer 1

You can use following method to delete the reminder set on event

public static void deleteReminderOnEvent(Long reminderId) {
    Uri reminderUri = ContentUris.withAppendedId(CalendarContract.Reminders.CONTENT_URI, reminderId);
    int rows = contentResolver.delete(reminderUri, null, null);
}

You need to use following method before above method to get the reminderId for the event and then pass it to above method.

private static Long checkIfReminderExist(ContentResolver contentResolver, long eventId) {
    Long reminderId = null;

    String[] projection = new String[]{
            CalendarContract.Reminders._ID,
            CalendarContract.Reminders.METHOD,
            CalendarContract.Reminders.MINUTES
    };

    Cursor cursor = CalendarContract.Reminders.query(contentResolver, eventId, projection);

    while (cursor != null && cursor.moveToNext()) {
        reminderId = cursor.getLong(0);
    }

    cursor.close();

    return reminderId;
}