Nach Termineintrag in Kalender, Bearbeitung nicht möglich, Kalender App stürzt ab

public void insertTermin(int tag, int monat, int jahr, String notiz) {


		String[] projection = new String[] { "_id", "name" };
		Uri calendars = Uri.parse("content://com.android.calendar/calendars");
		Cursor managedCursor = managedQuery(calendars, projection,
				"selected=1", null, null);
		if (managedCursor.moveToFirst()) {
			String calName;
			String calId;
			int nameColumn = managedCursor.getColumnIndex("name");
			int idColumn = managedCursor.getColumnIndex("_id");
			do {
				calName = managedCursor.getString(nameColumn);
				calId = managedCursor.getString(idColumn);
			} while (managedCursor.moveToNext());
		}


		ContentValues event = new ContentValues();
		event.put("calendar_id", 1);// calId


		event.put("title", notiz);
		event.put("description", "ToDo");
		event.put("eventLocation", "Banzkow");


		Date datumStart = new Date(GregorianCalendar.DATE);
		Date datumEnde = new Date(GregorianCalendar.DATE);


		datumStart.setYear(jahr);
		datumStart.setMonth(monat);
		datumStart.setDate(tag);
		datumStart.setHours(8);
		datumEnde.setYear(jahr);
		datumEnde.setMonth(monat);
		datumEnde.setDate(tag);
		datumEnde.setHours(9);


		event.put("dtstart", datumStart.getTime());
		event.put("dtend", datumEnde.getTime());
		event.put("allDay", 0); // 0 for false, 1 for true
		event.put("eventStatus", 1);
		event.put("visibility", 1);
		event.put("transparency", 1);
		event.put("hasAlarm", 1); // 0 for false, 1 for true


		Uri eventsUri = Uri.parse("content://com.android.calendar/events");
		Uri url = getContentResolver().insert(eventsUri, event);


		Toast toastTermin = Toast.makeText(this, "Termin eingetragen!",
				Toast.LENGTH_SHORT);
		toastTermin.show();
	}