title: FTP: Create folder (Android)
body: <p>I need to create a folder in FTP and upload all files of this path "mnt/sdcard/yummycandy/" to this folder.</p>
  
  <p>The name of the new folder must be the Serial number of the Smartphone like in this code :</p>
  
  <pre><code>public static String getManufacturerSerialNumber() {
    String serial = null; 
    try {
        Class&lt;?&gt; c = Class.forName("android.os.SystemProperties");
        Method get = c.getMethod("get", String.class, String.class);
        serial = (String) get.invoke(c, "ril.serialnumber", "unknown");
    } catch (Exception ignored) {}
    return serial;
  }
  </code></pre>
  
  <p>This is the code that i use. I want you, please, to modify it (creating a folder named with serial number of device and upload files in this folder)</p>
  
  <pre><code>public static final String TAG = "Contacts";
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
  
      Thread t = new Thread(new Runnable(){
          @Override
          public void run(){
              jetzt();
          }
      });
      t.start();
      Log.i(TAG, "thread started");
  
  }
  
  public void jetzt() {
      FTPClient ftpClient = new FTPClient();
      try {
          ftpClient.connect(" HOST SERVER IP ");
  
          ftpClient.setSoTimeout(10000);
          ftpClient.enterLocalPassiveMode();
          if (ftpClient.login(" LOGIN ", " PASSWORD ")) {
              ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
              ftpClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);
  
              final File folder = new File("mnt/sdcard/gamouz");
  
              for (final File fileEntry : folder.listFiles()) {
                  try {
                      FileInputStream fs = new FileInputStream(fileEntry);
                      if (!fileEntry.isDirectory()) {
                          String fileName = fileEntry.getName();
                          ftpClient.storeFile(fileName, fs);
                          fs.close();
                          Log.i(TAG, "sent");
                      }
                  } catch (Exception e) {
                      Log.i(TAG, "error uploading");
                  }
              }
          }
      } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
      }
  }
  </code></pre>