A quick and simple way is to create a new layer and create a black screen with a fade. Also add your level text or sprite. Then, on start of layout - set the visibility of your usual layers to invisible (also, disable groups for touch controls etc) and start the fade of the black screen sprite and text sprite.
On fade finished - destroy the sprites and set your other layers back to visible, and enable your controls.
Or for touch to continue, on touched - black screen sprite - destroy instead of using a fade.