So I can find them again these are the links for source code and diagrams accompanying the Android Development Videos that I have managed to find. Easiest place to start https://www.thenewboston.com/forum/category.php?orderby=rating&id=10

Different States of Android Activity
https://www.thenewboston.com/forum/topic.php?id=3234

[source code] Android Development Tutorial - 13
https://www.thenewboston.com/forum/topic.php?id=3281

[source code] Android Development Tutorial - 14
https://www.thenewboston.com/forum/topic.php?id=3280

[source code] Android Development Tutorial - 15
https://www.thenewboston.com/forum/topic.php?id=3282

[source code] Android Development Tutorial - 16
https://www.thenewboston.com/forum/topic.php?id=3318

[source code] Android Development Tutorial - 18 & 19
https://www.thenewboston.com/forum/topic.php?id=3354

[source code] Android Development Tutorial - 21 & 22
https://www.thenewboston.com/forum/topic.php?id=3366

[source code] Android Development Tutorial - 43 & 44
https://www.thenewboston.com/forum/topic.php?id=3639

[source code] Android Development Tutorial - 47 & 48
https://www.thenewboston.com/forum/topic.php?id=3686

[source code] Android Development Tutorial - 49 to 54
https://www.thenewboston.com/forum/topic.php?id=3767

[source code] Android Development Tutorial - 56 & 57
https://www.thenewboston.com/forum/topic.php?id=3790

[source code] Android Development Tutorial - 61 & 62
https://www.thenewboston.com/forum/topic.php?id=3991

[source code] Android Development Tutorial - 74
https://www.thenewboston.com/forum/topic.php?id=5106