Android: Impossible to obtain RAW image data from camera?

Question

Currently planning on doing a photography app utilizing RAW data provided by the camera in Android devices.

I wrote a quick skeleton using the camera API and noticed

Answer 1

Work only on Nexus 5 (maybe 7 ) using Android L.

Try this app: https://github.com/dylian94/android-Camera2Basic

It use the new camera API of Google: http://connect.dpreview.com/post/2707133307/google-android-api-camera-raw