Would it be possible to add a sample for the new ViewNode in Compose (in v2.1.0)? about sceneview-android HOT 1 OPEN

The problem is in ViewAttachmentManager. It adds FrameLayout to WindowManager and non of them have reference on LifecycleOwner.

Here is workaround I created temporary. Replace lib's ViewAttachmentManager on this one:

`import android.content.Context
import android.graphics.PixelFormat
import android.view.View
import android.view.ViewGroup
import android.view.WindowManager
import android.widget.FrameLayout
import androidx.lifecycle.DefaultLifecycleObserver
import androidx.lifecycle.LifecycleOwner
import androidx.lifecycle.ViewModelStoreOwner
import androidx.lifecycle.setViewTreeLifecycleOwner
import androidx.lifecycle.setViewTreeViewModelStoreOwner
import androidx.savedstate.SavedStateRegistryOwner
import androidx.savedstate.setViewTreeSavedStateRegistryOwner
import com.google.ar.sceneform.rendering.ViewAttachmentManager

/**

• Updated implementation of ViewAttachmentManager with access to frameLayout

• Don't forget to add to lifecycle observers otherwise View will not be rendered
  */
  class ComposableViewAttachmentManager(
  context: Context,
  private val lifecycleOwner: LifecycleOwner,
  private val viewModelStoreOwner: ViewModelStoreOwner,
  private val savedStateRegistryOwner: SavedStateRegistryOwner,
  private val ownerView: View // Used to post callbacks onto the UI thread.
  ): ViewAttachmentManager(context, ownerView), DefaultLifecycleObserver {
  private val windowManager: WindowManager
  private val windowLayoutParams: WindowManager.LayoutParams
  private val frameLayout: FrameLayout
  private val viewLayoutParams: ViewGroup.LayoutParams

  init {
  windowManager = context.getSystemService(Context.WINDOW_SERVICE) as WindowManager
  windowLayoutParams = createWindowLayoutParams()
  frameLayout = FrameLayout(context)
  viewLayoutParams = createViewLayoutParams()

   frameLayout.setViewTreeLifecycleOwner(lifecycleOwner)
   frameLayout.setViewTreeSavedStateRegistryOwner(savedStateRegistryOwner)
   frameLayout.setViewTreeViewModelStoreOwner(viewModelStoreOwner)
  

  }

  override fun onResume(owner: LifecycleOwner) {
  onResume()
  }

  override fun onPause(owner: LifecycleOwner) {
  onPause()
  }

  override fun onResume() {
  // A ownerView can only be added to the WindowManager after the activity has finished resuming.
  // Therefore, we must use post to ensure that the window is only added after resume is finished.
  ownerView.post {
  if (frameLayout.parent == null && ownerView.isAttachedToWindow) {
  windowManager.addView(frameLayout, windowLayoutParams)
  }
  }
  }

  override fun onPause() {
  // The ownerView must be removed from the WindowManager before the activity is destroyed, or the
  // window will be leaked. Therefore we add/remove the ownerView in resume/pause.
  if (frameLayout.parent != null) {
  windowManager.removeView(frameLayout)
  }
  }

  /**

  • Add a ownerView as a child of the [FrameLayout] that is attached to the [ ].
  • Used by [RenderViewToExternalTexture] to ensure that the ownerView is drawn with all
  • appropriate lifecycle events being called correctly.
    */
    override fun addView(view: View) {
    if (view.parent === frameLayout) {
    return
    }
    frameLayout.addView(view, viewLayoutParams)
    }

  /**

  • Remove a ownerView from the [FrameLayout] that is attached to the [WindowManager].
  • Used by [RenderViewToExternalTexture] to remove ownerView's that no longer need to be
  • drawn.
    */
    override fun removeView(view: View) {
    if (view.parent !== frameLayout) {
    return
    }
    frameLayout.removeView(view)
    }

  companion object {
  private const val VIEW_RENDERABLE_WINDOW = "ViewRenderableWindow"
  private fun createWindowLayoutParams(): WindowManager.LayoutParams {
  val params = WindowManager.LayoutParams(
  WindowManager.LayoutParams.WRAP_CONTENT,
  WindowManager.LayoutParams.WRAP_CONTENT,
  WindowManager.LayoutParams.TYPE_APPLICATION_PANEL,
  WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
  or WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
  or WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
  or WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
  PixelFormat.TRANSLUCENT
  )
  params.title = VIEW_RENDERABLE_WINDOW
  return params
  }

   private fun createViewLayoutParams(): ViewGroup.LayoutParams {
       return ViewGroup.LayoutParams(
           ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT
       )
   }
  

  }
  }
  `

from sceneview-android.