how to use.txt

public FileUploader uploader=new FileUploader();
 uploader.Chooser(webView, getActivity(), new FileUploader.callBackListner() {
            @Override
            public void cancelOpenChooser() {
               //handle here canceled request from file chooser.
                Log.d("uy","cancel file chooser popup");
            }
        });


# //set the on activity result in Activity class or fragment class  
 public void onActivityResult(int requestCode, int resultCode, Intent data) {
       fileUploader.setActivityResult(requestCode,resultCode,data);
 }
# //set the permission request result here
  @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        Log.e("permission","onRequestPermissionsResult 1");
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        fileUploader.setRequestPermissionsResult(requestCode, permissions, grantResults);
      }