list up all files with a certain extension on a device

Question

I want to find all the files, in my case pdf's, on a device. Now I wrote this code:

File images = Environment.getExternalStorageDirectory();
        mImagelist = images.listFiles(new FilenameFilter(){
            public boolean accept(File dir, String name)
            {
                return ((name.endsWith(".pdf")));
            }
        });

This code finds only one pdf
/storage/emulated/0/HTC_One_WWE_User_Guide.pdf. I've got several other pdf's in my download folder.

How can I solve this?

Answer 1

Thanks to Juan.

private void findFiles(String[] paths) {
  for (String path: paths) {
    recursiveScan(new File(path));
  }
}

private void recursiveScan(File _file) {
  File[] files = _file.listFiles();
  if (files != null && files.length > 0) {
    for (File file: files) {
      if (file.isDirectory()) recursiveScan(file);
      if (file.isFile()) {
        Log.d("Scan: ", file.toString());
      }
    }
  }
}

You just need to give a File var from where to search.