// Teil 1: Kalender ID selektieren
// ----------------------------------
ContentResolver resolver = getContentResolver();
String[] projection = { Calendars._ID, Calendars.CALENDAR_DISPLAY_NAME };
Cursor cursor = resolver.query(Calendars.CONTENT_URI, projection, null, null, null);
long calenderId;
if (cursor.moveToNext()) {
    calenderId = cursor.getLong(0);
    String name = cursor.getString(1);
    Log.i("My", "Kalender ID " + calenderId + ": " + name);
} else {
    throw new RuntimeException("Kein Kalender verfuegbar");
}

// Teil 2: Termin hinzufuegen
// ----------------------------------
long now = System.currentTimeMillis();
long startMillis = now + 60 * 60 * 1000;
long endMillis = startMillis + 60 * 60 * 1000;

ContentValues values = new ContentValues();
values.put(Events.CALENDAR_ID, calenderId);
values.put(Events.DTSTART, startMillis);
values.put(Events.DTEND, endMillis);
values.put(Events.EVENT_TIMEZONE, "CET");
values.put(Events.TITLE, "App entwicklen");
values.put(Events.DESCRIPTION, "Mit Android 4.0 APIs");
Uri eventUri = resolver.insert(Events.CONTENT_URI, values);
long id = Long.parseLong(eventUri.getLastPathSegment());
Log.i("My", "Neues Event mit ID " + id + " hinzugefuegt");

// Teil 3: Termininstanzen ausgeben
// ----------------------------------
Uri.Builder builder = Instances.CONTENT_URI.buildUpon();
ContentUris.appendId(builder, now);
ContentUris.appendId(builder, now + 200l * 24 * 60 * 60 * 1000);

projection = new String[] { Instances.EVENT_ID, Instances.BEGIN, Instances.TITLE };
cursor = resolver.query(builder.build(), projection, null, null, null);
while (cursor.moveToNext()) {
    long eventId = cursor.getLong(0);
    Date date = new Date(cursor.getLong(1));
    String title = cursor.getString(2);
    Log.i("My", "Event ID " + eventId + ": " + title + " (" + date + ")");
}

// Teil 4: Angelegten Termin wieder loeschen
// ----------------------------------
int deleteCount = getContentResolver().delete(eventUri, null, null);
Log.i("My", "Termine geloescht: " + deleteCount);