Set lock screen background in Android (like Spotify do)

Question

I know that this topic has been already discussed here, here and here, and the answer seems to be that it is not possible.

But I recently installed Spotify in my Ne

Answer 1

For me, the most instructive example was Random Music Player, mentioned in documentation about Android 4.0 APIs:

"For a sample implementation, see the Random Music Player, which provides compatibility logic such that it enables the remote control client on Android 4.0 devices while continuing to support devices back to Android 2.1."

In addition, I converted text to bitmap to have text as album art.