Introduction to Polaris, a library greatly enhancing the features of the Google Maps external library with effortless map annotating, gesture support, map callout support, built-in “user tracking” mode, etc.
Source code: https://github.com/cyrilmottier/Polaris
Sample application: https://play.google.com/store/apps/details?id=com.cyrilmottier.android.polarissample
Blog post: http://android.cyrilmottier.com/?p=824
Presented at the Paris Android Use Group in Paris, France.