Threads in Android

AsyncTask Call Chain

Android Shell - ps command

http://codeseekah.com/2012/10/21/android-shell-tricks-ps/

Understanding How Threads, AsyncTasks, Runnables and Handlers work in Android

http://www.aviyehuda.com/blog/2010/12/20/android-multithreading-in-a-ui-environment/
http://www.techotopia.com/index.php/Android_Threads_and_Thread_Handlers_-_An_Android_Studio_Tutorial
http://stackoverflow.com/questions/15657424/creating-another-asynctask-inside-of-doinbackground