Androïd ; Playing with storage info

    public void test(){
        try {
            File file = Environment.getExternalStorageDirectory();
            String strFile = file.getPath();
            Log.d("wififun", "ext storage dir ="  + strFile);
            Log.d("wififun", "ext storage length ="  + file.length());
            Log.d("wififun", "ext storage total space ="  + file.getTotalSpace()/1024/1024 + "mb");
            Log.d("wififun", "ext storage free space ="  + file.getFreeSpace()/1024/1024 + "mb");

            File myFile = new File(strFile + "/wififun.log");
            Log.d("wififun","can write new log file= " + myFile.canWrite());
            Log.d("wififun","exists new log file= "+myFile.exists());
            Log.d("wififun","size new log file= "+myFile.length());

            FileOutputStream fileOutputStream = new FileOutputStream(myFile);
            String str = "message debug de test d'écriture dans log file";
            fileOutputStream.write(str.getBytes());

            fileOutputStream.close();

        } catch (Exception e) {
            log("Exception:test:"+e.getMessage());
        }
    }