CreateToDo

 private long createToDo() {

        helper  = new DatabaseHelper(this);
        db = helper.getWritableDatabase();
        //rawQuery
        /*String query = "INSERT INTO todos ("
                + TodosEntry.COLUMN_TEXT + ","
                + TodosEntry.COLUMN_CATEGORY + ","
                + TodosEntry.COLUMN_CREATED + ","
                + TodosEntry.COLUMN_EXPIRED + ","
                + TodosEntry.COLUMN_DONE + ")"
                + " VALUES (\"Go to the gym\", 1, \"2016-01-01\", \"\", 0)";
        db.execSQL(query);*/

        //Insert method; returns the todo ID
        ContentValues values = new ContentValues();
        values.put(TodosEntry.COLUMN_TEXT, "Call Mr Bean");
        values.put(TodosEntry.COLUMN_CATEGORY, 1);
        values.put(TodosEntry.COLUMN_CREATED, "2016-01-02");
        values.put(TodosEntry.COLUMN_DONE, 0);
        // insert row
        long todo_id = db.insert(TodosEntry.TABLE_NAME, null, values);
        return todo_id;
    }