DialogFragment/AlertDialog dismiss automatically on click button

onResume.java

@Override
public void onResume() {
  super.onResume();
  AlertDialog alertDialog = (AlertDialog) getDialog();
  Button okButton = alertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
  okButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
      // Do your stuff here
    }
  });
}