Android Question How to set the opacity of a b4xbitmap

[Marvel]

Has anyone done something like this before? Manipulating the opacity of an image?
I have a hack I can use by adding a panel on the image and manipulating the opacity of the panel but I wanted to ask first if anyone has worked directly with image opacity before

 

[TILogistic]

EDIT:
solutions:

1. XUIViewsUtils.SetAlpha
2. AlfaImage