button - libgdx按钮向上向下没有作用

Question

val playTexture = assetManager?.get(A.image.gamePlayBtn, Texture::class.java)

val skin: Skin = Skin()
skin.add("up", TextureRegion(playTexture, 0, 0, 296, 96))
skin.add("down", TextureRegion(playTexture, 0, 96, 296, 96))

val playButton: ImageTextButton = ImageTextButton("PLAY THE GAME", with(ImageTextButton.ImageTextButtonStyle()) {
    up = skin.getDrawable("up")
    down = skin.getDrawable("down")
    font = BitmapFont()
    font.data.setScale(3f)
    font.color = Color.ORANGE
    this
})

OnClick事件可以正常运行，但是onClicked状态(向下)没有按钮背景更改。我哪里错了？

Answer 1

我已经测试了您的代码，一切正常。添加了完整的文本代码:

class Main : ApplicationAdapter(){

   internal lateinit var stage: Stage

   override fun create() {

    stage= Stage()
    stage.setDebugAll(true)
    Gdx.input.setInputProcessor(stage)

    var skin= Skin()
    var tex1 =Texture("badlogic.jpg")
    skin.add("up", TextureRegion(tex1, 0, 0, 100, 50))
    skin.add("down", TextureRegion(tex1, 0, 96, 100, 50))

    var playButton: ImageTextButton = ImageTextButton("Play The Game", with(ImageTextButton.ImageTextButtonStyle()){

        up = skin.getDrawable("up")
        down = skin.getDrawable("down")
        font = BitmapFont()
        font.data.setScale(3f)
        font.color = Color.ORANGE
        this
    });

    playButton.setPosition(0F,100F)
    playButton.addListener(object : ClickListener(){

        override fun clicked(event: InputEvent?, x: Float, y: Float) {
            print("clicked")
            super.clicked(event, x, y)
        }
    })

    stage.addActor(playButton)
  }

  override fun render() {

      Gdx.gl.glClearColor(1f, 0f, 0f, 1f)
      Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT)

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