Android has long needed a good gesture library and one has finally landed.
HacerGestoV3 Demo demonstrates the HacerGestoV3 gesture library for the Android platform.
This library allows for the use of 4 gestures (Rotate, Scale, Move and Fling) simultaneously.
Each gesture has advanced behaviors.
The library is open source and comes with a comprehensive demo app; showcasing it's advanced features.
Though the Library is protected by open source, the source code for this demo app is free source and is distributed with the library.
You can find the repository at: https://bitbucket.org/warwick/hacergestov3