freeEbook_MobileMapping
MapKit and the camera in iOS
From iOS in Practice by Bear Cahill

Flipping the view to take a picture in iOS
From Hello! iOS Development by Lou Franco and Eitan Mendelowitz

Displaying OverlayItems on a MapView in Android
From Android in Practice by Charlie Collins, Michael D. Galpin, and Matthias Kaeppler

 

A Mobile Mapping Application (PDF)