Tworzę więc plik CSV i za każdym razem, gdy pojawia się akcja, chciałbym zapisać dane do pliku. Problem, który mam, polega na tym, że nadpisze dane przy wprowadzaniu po raz drugi. Jak dodać dane na koniec pliku?

<code> public boolean save_to_csv(){

    //check if directory exists, if not create the folder
    File folder = new File(Environment.getExternalStorageDirectory() + "/HKA_CAL");
    //Environment.getExternalStorageDirectory() get the location of external storage
    boolean success = true;
    if(!folder.exists())
    {
       success = folder.mkdir();
    }         
    if (success) 
    { 
        //success is true if folder has successfully been created
        //now we can create/check if the file exists

        File stored_hka = new File(Environment.getExternalStorageDirectory()+"/HKA_CAL/Stored_values.csv");
        boolean file_existed=true;

        try{
            if(!stored_hka.exists()){
                stored_hka.createNewFile();
                file_existed=false;
            }
            FileOutputStream fOut = new FileOutputStream(stored_hka);
            OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
            if(!file_existed){
                //if the file did not exist we need to write the titles of the csv
                myOutWriter.append("Calibration Tracking\r\n");
                myOutWriter.append(",ZERO1,,Zero2,,cal1,,cal2,,CALIBRATION FACTORS\r\n");
                myOutWriter.append("Date,Stab,Read,Stab,Read,Stab,Read,Stab,Read,Unit S/N,F Zero,F Offset,F Factor\r\n");
            }
            myOutWriter.append("Date"
                    +","+get_step3_stab()+","+get_step3_read()
                    +","+get_step6_stab()+","+get_step6_read()
                    +","+get_step8_stab()+","+get_step8_read()
                    +","+get_step11_stab()+","+get_step11_read()
                    +","+get_sn_num()+","+get_f_zero()
                    +","+get_f_offset()+","+get_f_factor()+"\r\n"
                    );
            myOutWriter.close();
            fOut.close();
        }
        catch(Exception e){
            return false;
        }




        return true;
    }
    else 
    {
        return false;
    }



}
</code>