android - SQLite - getDatabase called recursively

Question

Here is my code:

public class DBHelper extends SQLiteOpenHelper {

@Override
    public void onCreate(SQLiteDatabase db) {
        db.execSQL("sql-query");

        try {
            //db = getWritableDatabase();
            fillAllDB(db);
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
// some code
}

fillAllDB(db); method adds a record to the table, but I can't use db = getWritableDatabase(); before method call - this is causing the looping. What to do in this case?