scene2d List with keyboard navigation

gistfile1.java

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Input;
import com.badlogic.gdx.ScreenAdapter;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.scenes.scene2d.InputEvent;
import com.badlogic.gdx.scenes.scene2d.InputListener;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.ui.List;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Table;
import com.badlogic.gdx.utils.Array;
import com.badlogic.gdx.utils.viewport.ScreenViewport;

/**
 * Created by Jacky on 24/12/2014.
 */
public class ListScreen extends ScreenAdapter {

    private Stage stage;

    public ListScreen() {
        stage = new Stage(new ScreenViewport());

        Table rootTable = new Table();
        rootTable.setFillParent(true);
        stage.addActor(rootTable);

        Array<String> listItems = new Array<String>(new String[] {"item1", "item2", "item3"});

        final List<String> listView = new List<String>(new Skin(Gdx.files.internal("skin/uiskin.json")));
        listView.setItems(listItems);

        listView.addListener(new InputListener(){
            @Override
            public boolean touchDown(InputEvent event, float x, float y, int pointer, int button) {
                listView.getStage().setKeyboardFocus(listView);
                return false;
            }

            @Override
            public boolean keyDown(InputEvent event, int keycode) {
                boolean consumed = false;

                int selectedIndex = listView.getSelectedIndex();

                switch (keycode) {
                    case Input.Keys.UP: {
                        listView.setSelectedIndex(Math.max(selectedIndex - 1, 0));
                    } break;

                    case Input.Keys.DOWN: {
                        listView.setSelectedIndex(Math.min(selectedIndex + 1, listView.getItems().size - 1));
                    } break;
                }

                return consumed;
            }
        });

        rootTable.add(listView);
    }

    @Override
    public void show() {
        Gdx.input.setInputProcessor(stage);
    }

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

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

Hi, also check out https://github.com/MrStahlfelge/gdx-controllerutils/wiki/Button-operable-Scene2d on this topic.