LIBGDX - Touchpad

Question

我不知道为什么我看不到我创建的thouchpad，但它有效。这是代码

package com.mygdx.game;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.scenes.scene2d.ui.Skin;
import com.badlogic.gdx.scenes.scene2d.ui.Touchpad;
import com.badlogic.gdx.scenes.scene2d.utils.Drawable;

public class AnalogStick extends Touchpad {
    private static Touchpad.TouchpadStyle touchpadStyle;
    private static Skin touchpadSkin;
    private static Drawable touchBackground;
    private static Drawable touchKnob;
    public AnalogStick(float x, float y) {
        super(10, getTouchpadStyle());
        setBounds(15, 15, 200, 200);
        setPosition(x,y);
    }
    private static Touchpad.TouchpadStyle getTouchpadStyle() {
        touchpadSkin = new Skin();
        touchpadSkin.add("touchBackground", new Texture("touchBackground.png"));
        touchpadSkin.add("touchKnob", new Texture("touchKnob.png"));
        touchpadStyle = new Touchpad.TouchpadStyle();
        touchBackground = touchpadSkin.getDrawable("touchBackground");
        touchKnob = touchpadSkin.getDrawable("touchKnob");
        touchpadStyle.background = touchBackground;
        touchpadStyle.knob = touchKnob;
        return new TouchpadStyle();
    }
}

在我的 Create 类中，我使用此代码将其添加到舞台中

        asMove = new AnalogStick(15,15);
        Gdx.input.setInputProcessor(stage);
        playerTexture = new Texture(Gdx.files.internal("player.png"));
        playerSprite = new Sprite(playerTexture);
        stage = new Stage(new ScreenViewport(), batch);
        stage.addActor(asMove);
        Gdx.input.setInputProcessor(stage);

在渲染方法中，这段代码

        stage.act(Gdx.graphics.getDeltaTime());
        stage.draw();

Answer 1

您的getTouchpadStyle方法似乎存在问题：它初始化touchpadStyle但不返回它，而是返回一个新的空style对象。换句话说，替换

return new TouchpadStyle();

跟

return touchpadStyle;