Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
DevFest Uyo—Jetpack compose: Game changer for b...
Search
Love
November 13, 2021
Programming
0
110
DevFest Uyo—Jetpack compose: Game changer for building Modern Android UI
Love
November 13, 2021
Tweet
Share
More Decks by Love
See All by Love
Introduction to Kotlin Multiplatform: Write Once, Run Everywhere
lamouresparus
0
33
Override Kotlin Property Getters and Setters
lamouresparus
0
22
Get started with the Gemini API in Android apps (client SDK)
lamouresparus
1
97
Code Surgery: Refactoring for a Healthy App
lamouresparus
0
8
Information gathering
lamouresparus
0
22
Code Surgery: Refactoring for a Healthy App
lamouresparus
0
34
Managing Technical Writing Projects
lamouresparus
0
54
DEVFEST BANJUL 2023: "Relay: The Future of Design to Code Workflows"
lamouresparus
0
75
WTM Aba Breakfast: Tech Career: Reaching Goals and Gaining Experiences
lamouresparus
0
35
Other Decks in Programming
See All in Programming
1人で挑むSwiftコンパイラ 〜型システム入門編〜
s_shimotori
0
310
【TID2024】模擬講義:プログラマと一緒にゲームをデザインしてみよう!
akatsukigames_tech
0
380
connect-go で面倒くささと戦う / 2024-08-27 #newmo_layerx_go
izumin5210
2
590
メモリ最適化を究める!iOSアプリ開発における5つの重要なポイント
yhirakawa333
0
370
長期運用プロダクトの開発速度を維持し続けるためのリファクタリング実践例
wataruss
8
2.5k
仮想ファイルシステムを導入して開発環境のストレージ課題を解消する
segadevtech
2
390
デザインシステムとコンポーネント指向によるフロントエンド開発プロセスの革新 / Innovation in Frontend Development Processes through Design Systems and Component-Oriented Architecture
nrslib
7
5k
BasicBasic認証
sadnessojisan
5
2.5k
Rubyのobject_id
qnighy
6
1.3k
令和トラベルにおけるLLM活用事例:社内ツール開発から得た学びと実践
ippo012
0
110
dRuby 入門者によるあなたの身近にあるdRuby 入門
makicamel
4
340
プログラマのための音楽入門
cheebow
4
540
Featured
See All Featured
Why You Should Never Use an ORM
jnunemaker
PRO
53
8.9k
Done Done
chrislema
180
16k
Build The Right Thing And Hit Your Dates
maggiecrowley
29
2.2k
Fantastic passwords and where to find them - at NoRuKo
philnash
47
2.7k
Large-scale JavaScript Application Architecture
addyosmani
508
110k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
34
1.9k
What's in a price? How to price your products and services
michaelherold
241
11k
10 Git Anti Patterns You Should be Aware of
lemiorhan
653
58k
Practical Orchestrator
shlominoach
185
10k
KATA
mclloyd
27
13k
How GitHub Uses GitHub to Build GitHub
holman
472
290k
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
502
140k
Transcript
Jetpack Compose: Game changer for building Modern Android UI Love
Sparus O’tudor Android Engineer, FrontendLabs Uyo
What is Jetpack Compose? Holla Jetty Packy😊
Jetpack Compose is a modern declarative UI Toolkit to simplify
and accelerate native Android UI development.
What ever happened to our famous XML?🤔
Different Languages 30+ thousands lines of code Cognitive Overhead Multiple
Files Deprecated Code Boilerplate Codes Multiple layers of inheritance Problems with the Traditional View System
UI logic and definition are completely Separate Uses XML Satic
Layout Definition Kotlin/Java Dynamic Logic & Behaviour Completely Separate Generates a lot of boilerplate codes
A Quick Look at Jetpack Compose
Jetpack Compose favours Composition over Inheritance is a Human has
a Composition Inheritance
Declarative UI Focus on the “WHAT” and not the “HOW”
Jetpack Compose is a function of State Anytime the “state“
changes the “compose UI” changes also.
@Preview @Composable setContent{} Compose Preview Material Theme
Composable Functions • Annotated with @Composable • @Composable informs the
compiler that the function is intended to convert data into UI. • Can accept parameters • Returns nothing
Composable Functions
“Composable functions can only be called in the context of
another compose function...”
setContent{} • The setContent block defines the activity's layout where
we call composable functions. • The content becomes the root view of the activity. • More like setContentView() in XML.
setContent{}
Material Theme • An implementation of Material Design. • Define
the applications theme with its respective colors, shapes, font, etc. • Can be customized. • Mostly the root element of the screen.
Material Theme
Modifier • An ordered, immutable collection of modifier elements that
decorate or add behavior to Compose UI elements. • Modifiers can be chained. • Their chaining order is important.
Modifier
Layouts Column Row Box Constraint Layout
Column
Row
Box
Say Goodbye to RecyclerView Welcome LazyRow and LazyColumn 🤩
Managing Lists In Compose • Compose makes it easy to
create lists. • These composables render only the elements that are visible on screen.
LazyRow A LazyRow is a horizontally scrolling list that only
composes and lays out the currently visible items.
LazyColumn A LazyColumn is a vertically scrolling list.
LazyVerticalGrid • A LazyColumn is a vertically scrolling grid. •
It accepts the number of grid items in one row or the minimum width of one item. • Unstable API.
LazyVerticalGrid
More Components • Button • Image • Icons, etc.
Ready to take a deep dive?
Additional Resources • Jetpack Compose Tutorial on developer.android • Jetpack
Compose basics Codelab • Under the hood of Jetpack Compose • Get started with Jetpack Compose • Jetpack Compose basics | Workshop
Questions?
Thank You!