How to use

isEnabled

method

in

android.widget.RadioButton

  @Override
  public void onClick(View v) {
    radioBypass.setEnabled(checkboxInternet.isChecked());
    radioTor.setEnabled(checkboxInternet.isChecked() && Util.isOrbotInstalled(context));
    if (!radioBypass.isChecked() && !radioTor.isChecked()) {
      if (radioTor.isEnabled()) {
        radioTor.setChecked(true);
      } else {
        radioBypass.setChecked(true);
      }
    }
  }
}

@Override
public void onSaveInstanceState(Bundle outState){
  //URI
  outState.putCharSequence("uri", getTextFromTextView(R.id.txt_uri));
  //Type
  outState.putCharSequence("type", getTextFromTextView(R.id.txt_type_response));
  //Code
  outState.putCharSequence("code", getTextFromTextView(R.id.txt_code_response));
  //Payload
  outState.putCharSequence("payload", getTextFromTextView(R.id.txt_response_payload));
  //ETAG
  outState.putCharSequence("etag", getTextFromTextView(R.id.txt_etag_response));
  //Observe
  outState.putCharSequence("observe", getTextFromTextView(R.id.txt_observe_response));
  //Content Format
  outState.putCharSequence("contentformat", getTextFromTextView(R.id.txt_contenttype_response));
  //Max-Age
  outState.putCharSequence("maxage", getTextFromTextView(R.id.txt_max_age_response));
  //ETAG
  outState.putCharSequence("block2", getTextFromTextView(R.id.txt_block2_response));
  //Observation stopped
  RadioButton radObservationCancelled = ((RadioButton) getActivity().findViewById(R.id.rad_stop_observation));
  outState.putBoolean("obs_cancelled", radObservationCancelled.isChecked());
  outState.putInt("obs_visible", radObservationCancelled.getVisibility());
  outState.putBoolean("obs_enabled", radObservationCancelled.isEnabled());
}