append to file android
<p>hey there, i need to append to my file but it is not working, it keeps overwriting the file,  can anyone please tell me what is wrong:</p>

<pre><code>  public void generateNoteOnSD(String sBody){

        try
        {
            File root = new File(Environment.getExternalStorageDirectory(), "AdidasParticipants");

            if (!root.exists()) {
                root.mkdirs();

            }

            File gpxfile = new File(root, "participants.txt");

            BufferedWriter bW;

            bW = new BufferedWriter(new FileWriter(gpxfile));
            bW.write(sBody);
            bW.newLine();
            bW.flush();
            bW.close();
            //Toast.makeText(mContext, "Tus datos han sido guardados", Toast.LENGTH_SHORT).show();
        }
        catch(IOException e)
        {
             e.printStackTrace();
          //   importError = e.getMessage();
            // iError();
        }
       } 
</code></pre>

<p>Thanks in advance.</p>
