如何从viewpager片段中更改文本和控制活动的可见性

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="初始文本内容" />

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="点击按钮" />

</LinearLayout>

public class ViewPagerFragment extends Fragment {

    private TextView textView;
    private Button button;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_viewpager, container, false);

        textView = view.findViewById(R.id.textView);
        button = view.findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                textView.setText("新的文本内容");
                button.setVisibility(View.GONE);
            }
        });

        return view;
    }
}