Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android Build a Simple Android App (2014) Creating the Screen Layout Setting Colors

Posted by Erik Berkun-Drevnig
Erik Berkun-Drevnig
286 Points

The alpha for 0.5 is 128 because the range is from 0-255 not because it has to be a whole number

The alpha for 0.5 is 128 because the range is from 0-255 not because it has to be a whole number

Kristian Terziev
Kristian Terziev
28,449 Points

I think what Ben ment is that 255/2 = 127.5. And the alpha needs to be a whole number so we round it up to 128. Hope this clears the misunderstanding :)