BaseFragment that all Fragments should extend from in order to save state in all circumstances using argument

BaseFragment

public abstract class BaseFragment extends Fragment {

    static final String STATE = "saved_state";
    Bundle mSavedState;

    public BaseFragment() {}

    public abstract void refreshData();

    protected void showSoftKeyboard(View editText) {
        InputMethodManager imm =
                (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);

        getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
    }

    protected void hideSoftKeyboard(View editText) {
        InputMethodManager imm  =
                (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.hideSoftInputFromInputMethod(editText.getWindowToken(), 0);
        imm.hideSoftInputFromWindow(editText.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
    }

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        onSettingFragmentVariables(getArguments());

        if (!restoreStateFromArguments()) {
            onFirstTimeLaunched();
        } else {
            onRelaunched();
        }
    }

    protected abstract void onFirstTimeLaunched();

    protected abstract void onRelaunched();

    @Override
    public void onSaveInstanceState(Bundle outState) {
        saveStateToArguments();
        super.onSaveInstanceState(outState);
    }

    @Override
    public void onDestroyView() {
        saveStateToArguments();
        super.onDestroyView();
    }

    private void saveStateToArguments() {
        saveState();
        Bundle bundle = getArguments();
        bundle.putBundle(STATE, mSavedState);
    }

    private void saveState() {
        if (mSavedState == null) {
            mSavedState = new Bundle();
        }
        onSaveState(mSavedState);
    }

    protected abstract void onSaveState(Bundle outState);

    private boolean restoreStateFromArguments() {
        Bundle bundle = getArguments();
        mSavedState = bundle.getBundle(STATE);
        if (mSavedState != null) {
            restoreState();
            return true;
        }
        return false;
    }

    private void restoreState() {
        if (mSavedState != null) {
            onRestoreState(mSavedState);
        }
    }

    protected abstract void onRestoreState(Bundle savedInstanceState);
    protected abstract void onSettingFragmentVariables(Bundle args);
}