Chapter 8: Enriching Your Program - Using Mobile Multimedia

1. Use notifications in activities, broadcast receivers, and services (ie, notifications in the drop-down menu bar).
2. Call the camera to take a picture;
3. Call the album to get the picture;
4. play audio files;
5. play video files;

source code

See the source code: https://github.com/optor666/first-line-code-of-android/tree/master/chapter08