如何在libgdx中捕捉按钮的一次点击？

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.Button;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;
import com.badlogic.gdx.utils.viewport.ScreenViewport;

public class MyGame extends ApplicationAdapter {
    private Stage stage;

    @Override
    public void create() {
        stage = new Stage(new ScreenViewport());
        Gdx.input.setInputProcessor(stage);

        Skin skin = new Skin(Gdx.files.internal("skin/uiskin.json"));

        Button button = new Button(skin);
        button.setPosition(100, 100);
        button.setSize(200, 50);
        button.addListener(new ClickListener() {
            @Override
            public void clicked(InputEvent event, float x, float y) {
                // 按钮被点击时执行的逻辑
                System.out.println("按钮被点击了！");
            }
        });

        stage.addActor(button);
    }

    @Override
    public void render() {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        stage.act();
        stage.draw();
    }

    @Override
    public void dispose() {
        stage.dispose();
    }
}