How to use

onSaveInstanceState

method

in

android.preference.PreferenceFragment

@Override
public void onSaveInstanceState(final Bundle outState) {
  super.onSaveInstanceState(outState);
  if (mIsAddingNewSubtype) {
    outState.putBoolean(KEY_IS_ADDING_NEW_SUBTYPE, true);
  }
  if (mSubtypeEnablerNotificationDialog != null
      && mSubtypeEnablerNotificationDialog.isShowing()) {
    outState.putBoolean(KEY_IS_SUBTYPE_ENABLER_NOTIFICATION_DIALOG_OPEN, true);
    outState.putString(
        KEY_SUBTYPE_FOR_SUBTYPE_ENABLER, mSubtypePreferenceKeyForSubtypeEnabler);
  }
}

@Override
@CallSuper
public void onSaveInstanceState(Bundle outState) {
  super.onSaveInstanceState(outState);
  if(viewModel != null) { viewModel.saveInstanceState(outState); }
}

@Override
public final void onSaveInstanceState(final Bundle outState) {
  super.onSaveInstanceState(outState);
  outState.putBundle(BOTTOM_SHEET_STATE_EXTRA, bottomSheet.onSaveInstanceState());
  outState.putBundle(CUSTOM_BOTTOM_SHEET_STATE_EXTRA,
      customBottomSheet.onSaveInstanceState());
  outState.putBundle(INTENT_BOTTOM_SHEET_STATE_EXTRA,
      intentBottomSheet.onSaveInstanceState());
}