How to Set Transparent background color

[rabinansal]

how to change the background color

fun setSurfaceView(mSurfaceView: SurfaceView) {
        modelViewer = ModelViewer(mSurfaceView)
        mSurfaceView.setOnTouchListener(modelViewer)

        //Skybox and background color
        //without this part the scene'll appear broken
        modelViewer.scene.skybox = Skybox.Builder().build(modelViewer.engine)
        modelViewer.scene.skybox?.setColor(1.0f, 1.0f, 1.0f, 1.0f) //White color


 }

[rabinansal]

 fun setSurfaceView(mSurfaceView: SurfaceView) {
        modelViewer = ModelViewer(mSurfaceView)
        mSurfaceView.setOnTouchListener(modelViewer)

        mSurfaceView.holder.setFormat(PixelFormat.TRANSLUCENT)
        val options = modelViewer.renderer.clearOptions
        options.clear = true
        modelViewer.renderer.clearOptions = options
        modelViewer.scene.skybox = Skybox.Builder().build(modelViewer.engine)
        modelViewer.view.blendMode= View.BlendMode.TRANSLUCENT
        modelViewer.scene.skybox = null

    }

[wangyl521]

 fun setSurfaceView(mSurfaceView: SurfaceView) {
        modelViewer = ModelViewer(mSurfaceView)
        mSurfaceView.setOnTouchListener(modelViewer)

        mSurfaceView.holder.setFormat(PixelFormat.TRANSLUCENT)
        val options = modelViewer.renderer.clearOptions
        options.clear = true
        modelViewer.renderer.clearOptions = options
        modelViewer.scene.skybox = Skybox.Builder().build(modelViewer.engine)
        modelViewer.view.blendMode= View.BlendMode.TRANSLUCENT
        modelViewer.scene.skybox = null

    }

It doesn't work. It still shows black

[Reign9201]

you can use these code set background transparent:

 val viewer = ModelViewer(surfaceView, uiHelper = UiHelper(UiHelper.ContextErrorPolicy.DONT_CHECK).apply {
      isOpaque = false
  })
viewer.run {
    renderer.clearOptions = renderer.clearOptions.apply {
        clear = true
    }
    view.blendMode = View.BlendMode.TRANSLUCENT
    scene.skybox = null
}