This document summarizes an Android study jam session that will cover intents, activity lifecycle, Jetpack navigation, view models, and code reviews of sample apps. The session outline includes recapping the previous session on layouts, XML, and Gradle, then exploring intents, activity lifecycle, Jetpack navigation, view models, and reviewing the words and unscramble apps. The facilitator is Rishi Balamurugan and mentor is Pranshu Aggarwal from GDSC Shiv Nadar University.

1. This work is licensed under the Apache 2.0 License
Android Study Jams
Session 3 - 3rd Jan 2022
Rishi Balamurugan, Facilitator
Pranshu Aggarwal, Mentor
GDSC Shiv Nadar University

2. This work is licensed under the Apache 2.0 License
Session Outline:
● Session 2 recap
● Unit 3 concepts
○ Intents
○ Activity Lifecycle
○ Jetpack Navigation
○ ViewModel
● Code Review
○ Words app
○ Unscramble app
● Q & A

3. This work is licensed under the Apache 2.0 License
Session 2 recap:
● Basic concepts overview
○ Layouts
○ XML
○ Gradle
● Code Review
○ Tiptime app
○ Affirmations app

4. This work is licensed under the Apache 2.0 License
● It’s object representing some action to be
performed
● Two types: Implicit and Explicit
Intent

5. This work is licensed under the Apache 2.0 License
Activity Lifecycle:

6. This work is licensed under the Apache 2.0 License
Jetpack Navigation:
● Simplifies Android Navigation
● Components:
○ NavHostFragment
○ NavController
○ Navigation Graph

7. This work is licensed under the Apache 2.0 License
Code Review: Words app

8. This work is licensed under the Apache 2.0 License
● Model of the app data that is displayed on the
screen
● Isn’t destroyed when an activity is destroyed
ViewModel:
● Observable data holder class
● Is lifecycle-aware
Livedata:

9. This work is licensed under the Apache 2.0 License
Code Review: Unscramble app

10. This work is licensed under the Apache 2.0 License
THANK YOU
and have fun helping your communities
become Android developers!