如何在活动启动时滚动到ScrollView中的底部

public class MainActivity extends AppCompatActivity {
    private ScrollView scrollView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        scrollView = findViewById(R.id.scrollView);

        // 在活动启动时滚动到ScrollView的底部
        scrollToBottom();
    }

    private void scrollToBottom() {
        scrollView.post(new Runnable() {
            @Override
            public void run() {
                int bottom = scrollView.getChildAt(0).getHeight();
                scrollView.smoothScrollTo(0, bottom);
            }
        });
    }
}