04-05-2013 06:58 AM
I am trying to create a ColorSplash-alike app..
1. I have 2 ImageViews, one is on top of another.
2. The one on top is grayscaled, while the one below still have its color.
I would like to make a certain part of the grayscaled image become transparent (the part where the user touch), and then save it into a file.
I have been wondering for a while now.
Could anyone explain the logic behind this? Thank you..