Display name of file in progress bar in android studio

no. bcos i declare getName() method before progress bar.. But if i did not declare then it show error. What is the solution of it

Here is Code for copy and paste..But my question is how can i show file name on progress bar which is copying..


public void CopyTask1(View v) {

foldername="Files1 " + System.currentTimeMillis();
if (adapter == null)
return;



int count = adapter.getCount();


for (int i = 0; i < count; i++) {
copyfiles(i);


}

}

private void copyfiles(int position) {
UsbFile entry = adapter.getItem(position);

Toast.makeText(MainActivity.this,"files"+adapter.getCount(),Toast.LENGTH_SHORT).show();



// return;
//}

if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)

!= PackageManager.PERMISSION_GRANTED) {

if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.WRITE_EXTERNAL_STORAGE))
{


Toast.makeText(this, R.string.request_write_storage_perm, Toast.LENGTH_LONG).show();
} else

{
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
REQUEST_EXT_STORAGE_WRITE_PERM);
}

return;
}

CopyTaskParam param = new CopyTaskParam();

param.from = entry;

File f = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/"+ "Files1" +"/"+foldername );


f.mkdirs();

int index = entry.getName().lastIndexOf(".") > 0
? entry.getName().lastIndexOf(".")
: entry.getName().length();

String prefix = entry.getName().substring(0, index);
String ext = entry.getName().substring(index);
// prefix must be at least 3 characters
if(prefix.length() < 3)

{
prefix += "pad";
}

try {
param.to = File.createTempFile(prefix, ext, f);

}
catch (IOException e)
{
e.printStackTrace();
}
new CopyTask().executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR,param);


}