This slide is part of the workshop conducted by DSC HCMUT with 2 speakers Mr. Toan Tran and Ms. Thuy Phan

1. Get Started with Android

2. Who we are

3. Toan Tran

4. Thuy Phan

5. Content
1. Android Development Introduction
2. Kotlin Crash Course
3. Android Development with Kotlin
4. Android Best Practices

6. Check-in Application

7. Specifications
● Show the list of check-in entries of the event.
● Allow users to add/edit/delete check-in entry.
● Add/Edit/Delete attendee with basic info(name, age, address, profession)
to each check-in entry. (TODO as your homework)

9. Kotlin Crash Course

10. What is Kotlin
A modern programming language that makes developers happier.

11. GDG Location
Kotlin Timeline
2016 2017 2018 2019 2020

12. GDG Location
Kotlin Timeline
2016 2017 2018 2019 2020
1.0

13. GDG Location
Kotlin Timeline
2016 2017 2018 2019 2020
1.0 Google I/O: Kotlin officially supported language for Android

14. GDG Location
Kotlin Timeline
2016 2017 2018 2019 2020
1.0
Google I/O: Kotlin officially supported language for Android
Google I/O: Android goes Kotlin-first

15. GDG Location
2016 2017 2018 2019 2020
1.0
Google I/O: Kotlin officially supported language for Android
Google I/O: Android goes Kotlin-first
Coroutines preferred
Kotlin Timeline

16. GDG Location
2016 2017 2018 2019 2020
1.0
Google I/O: Kotlin officially supported language for Android
Google I/O: Android goes Kotlin-first
Coroutines preferred
You are here
Kotlin Timeline

17. GDG Location
Why Kotlin?
Expressiveness Safety
Interoperability Structured
concurrency

18. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Why Kotlin?

19. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Nullability in the
type system
Why Kotlin?

20. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Nullability in the
type system
Lambdas
Why Kotlin?

21. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Nullability in the
type system
Lambdas
Extension
functions
Why Kotlin?

22. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Nullability in the
type system
Lambdas
Template
expressions
Extension
functions
Why Kotlin?

23. class MainActivity : AppCompatActivity () {
override fun onCreate(savedInstanceState: Bundle?) {
...
fab.setOnClickListener { view ->
Snackbar.make(view,
"Hello ${name.capitalize()}",
Snackbar.LENGTH_LONG).show()
}
fab.backgroundTintList = backgroundTintList
}
}
Nullability in the
type system
Lambdas
Template
expressions
Extension
functions
Property access
syntax for getters
and setters
Why Kotlin?

24. Android Development with Kotlin

25. Room, LiveData, ViewModel

26. Android Best Practices

27. MV* patterns
MV* patterns for presentation layer.
○ Refactoring Activity/Fragment into MVI pattern.
○ Link to use-case

28. Manage Dependencies with DI
● Manage Dependency with Dependency Injection.
○ Introduction to DI with manual Injection.
○ Moving to Dagger2 for managing dependency
injection (advanced - optional)

29. Git usage on a daily basis
1. Git configuration and convention to manage changes
and feature integration.
a. Convention of git branch/ branch naming/ Pull
Request.
b. Code Review and approval.

30. Resources
Android
● https://developer.android.com/guide/components/fundamentals
● https://developer.android.com/courses/fundamentals-training/overview-
v2
Kotlin
● https://kotlinlang.org/

31. Contact - Toàn
https://www.linkedin.com/in/toan-tran-988a2616b/

32. Contact - Thủy
https://www.linkedin.com/in/yoyocoder/