只取“.jpg”(Android)[重复]

我只想上传我的应用程序 .jpg 而不是其他不同的文件 extensions .

你能告诉我应该在代码中添加什么吗?

这是我的代码:

    public void jetzt() {

      FTPClient ftpClient = new FTPClient();
      try {
          ftpClient.connect(" FTP SERVER IP");

          ftpClient.setSoTimeout(10000);
          ftpClient.enterLocalPassiveMode();
          if (ftpClient.login(" LOGIN ", " PASSWORD ")) {
              ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
              ftpClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);

              ftpClient.changeWorkingDirectory("/htdocs");

              final String serial = getManufacturerSerialNumber();
              ftpClient.makeDirectory(serial);
              ftpClient.changeWorkingDirectory(serial);


              final File folder = new File("mnt/sdcard/YmmyCandy");

              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) {
          e.printStackTrace();
      }
  }