I want to save files with radio button and normal button. In android

btnSave.setOnClickListener(new View.OnClickListener()
{
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            Date now = new Date();
            String fileName = "TFR_"+formatter.format(now) + ".txt";//like 2016_01_12.txt

            @Override
            public void onClick(View v)
            {
                try
                {
                    File root = new File(Environment.getExternalStorageDirectory()+ "Dhananjay", "A1");
                    
                    if (!root.exists())
                    {
                        root.mkdirs();
                        root.createNewFile();
                    }
                    File gpxfile = new File(root, fileName);
                    FileWriter writer = new FileWriter(gpxfile,true);
                    writer.write(tvTerminal.getText()+"\n\n");
                    writer.flush();
                    writer.close();
                    clear.setVisibility(View.VISIBLE);
                }
                catch(IOException e)
                {
                    e.printStackTrace();
                }
            }
        });