Bibliography

Official

http://developer.android.com/reference/packages.html: API Javadoc
http://tools.android.com/
https://source.android.com/, specially:
- http://source.android.com/devices/index.html
- http://source.android.com/security/index.html
which don't have to do about the source directly, but really how to use it.
http://android-developers.blogspot.fr/

Official:

https://github.com/android/platform_development/tree/ndk-r12b/samples tons of examples.
- ApiDemos: simple API examples app, comes pre-installed on emulator images. But hard to get running... https://android-review.googlesource.com/#/c/243350/
https://github.com/googlesamples?utf8=%E2%9C%93&query=android
https://github.com/googlesamples/android-architecture complex app sample
<sdk>/samples/android-XX and http://developer.android.com/samples/index.html, TODO source?
- BasicMediaDecoder: click play to show an .mp4 H.264 / AAC video decoded on screen. The timing is horrible, with lots of breaks. And when the short video ends, an exception is raised.
${ANDROID_SDK}/samples/android-XX. Sample projects. Note that even in android-XX, you may need to install an older Android YY for them to work.

Those projects are Gradle based, so you can either run them with with Android Studio or standard Gradle CLI commands.

TODO: many sample apps fail to build with: "failed to find Build Tools revision 22.0.0". How to solve it?

TODO: some apps die with "Unfortunately your app has stopped". On Android 22, camera apps failed.

Many (all) of the samples can be found under: https://github.com/googlesamples, some grouped in a single repository, others in dedicated repositories, often of form
```
android-BasicManagedProfile
```
GitHub presence is mentioned at http://developer.android.com/samples/index.html

Third-party:

https://github.com/commonsguy/cw-omnibus, by Android monster http://stackoverflow.com/users/115145/commonsware
https://github.com/google/grafika Android image / video manipulation. No JNI.

More samples by the same ex Googler: http://bigflake.com/mediacodec/
https://github.com/fyhertz/libstreaming-examples Minuscule examples over a MediaCodec based library.

Example 1 streams camera over a RTSP server, and can be viewed with VLC.