For app developers: Demonstrates an open source color picker library.
Note: This is a demo for app developers. It does nothing useful otherwise!
This app demonstrates a color picker library that provides a ColorPreference and a ColorPickerView with hue / saturation / value / alpha selection, as well as a hex color entry. Full details are on the project's GitHub page:
https://github.com/martin-stone/hsv-alpha-color-picker-android (or click the "visit website" link below.)