Android Development Basics
Introduction to Android Studio
Starting Basic Application
Templates
Android Studio Features
Intro to GMS and overview
Intro to HMS
Why important
Impact on platform
• Starting Basic Application ◦ Templates • Android Studio Features • Intro to GMS and overview • Intro to HMS ◦ Why important ◦ Impact on platform • Example Code • Questions
XML • IDE - Android Studio • Framework developed and maintained by Google ◦ Open source project ◦ Source.android.com • Android Developer Guide ◦ developer.android.com • Google Developer Guide ◦ developers.google.com
with Java • Many features simplifying and reducing boilerplate code • Kotlin introduces the following features ◦ Null Safety ◦ Lambda Expressions and inline Functions ◦ Extension Functions ◦ Coroutines ◦ Smart Casts ◦ To name a few
development - 5 to 6 years • Before Android Studio - Eclipse ◦ Horrible ◦ Very un-user friendly • Android studio only free IDE from JetBrains with all the features ◦ Ongoing development and support ◦ Latest Stable Version 4.0 • Android Studio is your 1 stop shop for Android Development
with already defined ▪ Skeleton ▪ Android Basic Building Blocks ready to go ▪ Architecture • MVVM on most of them ▪ Unit Test Base ▪ Gradle Build system already setup and configured • Just press play!
◦ Build C libraries to integrate into Android Apps • Empty Activity ◦ Clean activity with no predefined structure, navigations or actions • Google AdMob Ads Activity ◦ Add basic activity for hosting Google Ads
Smart watches • Android TV • Android Automotive ◦ Car interfaces using Android • Android Things ◦ Embedded operating system apps for smaller devices running Android
of the features we enjoy on our Android devices ◦ Google Play Store - Access to Android applications ◦ GMail - Most people have a gmail account linked to their device ◦ Chrome - Google Search ◦ Google Maps ▪ Location searches ▪ Listed information about locations ◦ Youtube ◦ Google Cloud hosted services ▪ Cloud capabilities for developers to use in applications ◦ android.com/gms
as the heart of Android and its applications Provides multiple capabilities for applications to leverage on and provide functionalities Allows distribution of developed applications via Play Store
Billion Smartphone users worldwide ◦ Roughly 70 % of those users are on Android ◦ 21 % of users are using iOS ◦ Rest other operating systems • Majority Share Device Manufacturers ◦ Apple ◦ Samsung ◦ Huawei
started pushing aggressive trade sanctions against China • Forcing American owned companies like Google to start cutting off ties with Chinese companies like Huawei ◦ Initially sparking the idea of Huawei developing their own OS ◦ In time it became clear that the Android Open Source Project would still be used ▪ Without GMS ▪ Forcing Huawei to expand their long running/neglected AppGallery (HMS) ecosystem
▪ No method of application distribution ◦ Google Search ◦ Youtube ◦ Google Drive • Developer Capabilities lost ◦ Location services ◦ Firebase ◦ Google developed cloud services • The list goes on
different manufacturers - Diverging further ◦ Beyond the UI changes already made ▪ Samsung ▪ Huawei ▪ Xiaomi MUI UI ▪ One Plus ◦ How far will the modifications to Android stretch with this new trend
Android apps supporting both ecosystems (HMS and GMS) • Trade-offs supporting both from dev point of view ◦ Builds ◦ Versioning ◦ Code bases • Older Huawei devices with GMS and HMS ◦ Apps listed on both stores ▪ Same package name? ▪ Versioning the app? ▪ Conflicts between two stores? • Difficulty porting GMS only apps to support HMS? • If simple ◦ Others like Samsung also diverge? ▪ Something like SMS?
Can no longer use Google provided backups • Other ex. Samsung - Samsung ID • Huawei ID ◦ GMS apps backed up and restored on HMS ecosystem ▪ How do apps behave? • Android standard experience diverging further among platforms ◦ Beyond UI changes • Integration into a new ecosystem not linked to Google history... ◦ Many users are well integrated into some google services if not all
development • Free usage • Works on all OS ◦ Windows ◦ Mac ◦ Linux • Provides all the tools required to develop Android Applications ◦ Coding ◦ Building ◦ Debugging ◦ Analysing Performance
with user ◦ View System integrates to Activities and Fragments • Services ◦ Entry Point for keeping app and processes running in the background • Broadcast Receivers ◦ Allows app to respond to system wide broadcasts • Content Providers ◦ Manages a shared set of data stored ▪ In the file system ▪ In an SQLite database ▪ On the web
requirements ▪ Filters • Intent Filters ▪ Permissions • However user must accept the permissions when required • Resources ◦ Text displayed ◦ Colour codes ◦ Images • Intents and Intent Filters • And many more
SDK versions ◦ SDK 19 - KitKat ◦ SDK 21 - Lollipop ◦ SDK R - Latests un-named build ◦ Etc • Libraries used by the app ◦ Definitions and configurations ◦ Version management ▪ Ex. Android X lib version ◦ Support libraries - deprecated with X ◦ External API based libraries
to user and OS events ◦ Ex. user kills the app ▪ Maybe we need to stop a service ◦ User pauses the app ▪ User backgrounding the app ▪ Maybe we must store data
n2android
spycwolf
chanyou0311
mshindo
narirou
kamina_zzz
maimyyym
negi111111
kakehashi
sansantech
re_taro
fumiyasac0921
sonatard
bkeepers
sferik
jonyablonski
jmmastey
chrisshort
jeffersonlam
tammyeverts
rmw
hannesfritz
smashingmag
tanoku
