" You’re building your app, you’re out on your way,
Activity to fragment, you’ll add deep links one day.
Notifications, transitions, you pass arguments, too,
Just a messy piece of cake, for a developer like you!
But then the user hits back, or up or away -
What should happen? You’re lost! The road starts to sway!
They talk about launch modes, affinity, activity stack...
We will deep-dive to those,
then learn the new stuff from Jetpack! "
*** Presented at Android Summit, and Andorid NYC meetup, on August 2018.