A basic sketch that shows how to use millis() for basic animation, in this case a fade-in of a rect(). millis() returns the current runtime of the sketch in milliseconds. Left-click for Fade-In, Right-click for Fade-Out. The transparency (alpha channel of fill/stoke) is calculated evenly across the duration, meaning you only have to change 1 variable (delaytime) for adjusting the speed and fade. I wrote this from scratch as a learning activity some time ago, should be helpful to newcomers.

http://www.openprocessing.org/visuals/?visualID=30730

..continue for code..

more…

Nice, another excuse to use Processing again..

The primary goal of this project is to make it foolishly easy to create Android apps using the Processing API. Once you have Processing on your machine (and the Android developer tools), you can simply write a line of code, hit Run (Ctrl-R or Cmd-R), and have your sketch show up in the emulator as a working Android app. Select Run on Device (Ctrl-Shift-R or Cmd-Shift-R) to have it run on an Android device that you have plugged into your machine. That’s good stuff!

• Android – Processing.
• NookColor USB ADB – nookDevs – Install SDK and Patch Driver.
• Processing & Android: Mobile App Development Made (Very) Easy | blprnt.blg.
• Jeanine Meyer’s Processing lessons.
• 3D in Processing for Android « codeanticode.
• Android Adventures, part 3: hardware detection in Processing | AK Eric .