Introduction to Android App Development

Todd Burgess
Todd Burgess Media
todd@toddburgessmedia.com
Twitter: @tburgess57
Github: toddburgessmedia
Introduction to Android Development
https://bit.ly/podcamp2017Android

About MeAbout Me
Computing and Information Science degree from University of Guelph
Did Java enterprise apps in Silicon Valley for 1.5 years
Migrated to Android platform 2 years ago
Several Apps on Google Play
What’s Your Score
Tech Dive
Eaves Street
Adoptathon Manager and Store Corodinator with Toronto Cat Rescue

Kenny and SpencerKenny and Spencer

Cakes by ToddCakes by Todd

Android Introduction
In the Beginning
Android Introduction
In the Beginning
Mobile operating system first
released in 2008
Based on the Linux operating
system
API Version 1

Android 2017Android 2017
Current Android Release is Nougat
Over 1 billion devices in the World are currently running
Android
Android now runs on phones, tablets, watches, cars
and televisions

Android Nougat
API 25
Android Nougat
API 25

Android on TabletsAndroid on Tablets

Android WearAndroid Wear

Android AutoAndroid Auto

Android TVAndroid TV

Android ThingsAndroid Things

Android MarketshareAndroid Marketshare
https://www.statista.com/statistics/263445/global-smartphone-sales-by-operating-system-since-2009/

Android Versions (according to Wikipedia)Android Versions (according to Wikipedia)

Android Version Breakdown (January 2017)
Source: Wikipedia
Android Version Breakdown (January 2017)
Source: Wikipedia

Understanding the Version FragmentationUnderstanding the Version Fragmentation
Android is popular in emerging markets
Emerging market Android devices are use older
technology
Android devices are not upgraded for a variety of
reasons
Upgrading Android devices is a “complicated process”

What is a Mobile Application
Source: Techopedia
What is a Mobile Application
Source: Techopedia
A mobile application, most commonly referred to as an
app, is a type of application software designed to run on a
mobile device, such as a smartphone or tablet computer.
Mobile applications frequently serve to provide users with
similar services to those accessed on PCs. Apps are
generally small, individual software units with limited
function.

Advantages of a Mobile Device for AppsAdvantages of a Mobile Device for Apps
Ubitiquy
Availability
Data Consumption over Production
Sensor Information (ie accelertometers, light sensors,
device orientation)
Location Information
Notifications

Introduction to the Android Operating SystemIntroduction to the Android Operating System
Android SDK
Your App

Android App Development OptionsAndroid App Development Options
Natives apps written with the Java programming language
Other options include C, C++, Kotlin
Apps written in Java are referred to as native apps
Other forms of app development include cross platform
development (React Native, Ionic, Xamarin, Unity)
Progressive web apps
Mobile Web sites

Advantages of Native App DevelopmentAdvantages of Native App Development
Take advantge of all Android features
Reduced memory
Increased speed (Perf matters!!)
Users appreciate native experience
Can function off-line
Greater control of the user experience

Putting an App TogetherPutting an App Together
Development Environment
Android Studio (Linux, macOS, Windows)
Java Programming Language
User Experience
Material Design
Testing Environment
Android Virtual Devices and Real Devices
Deployment
Google Play
Custom Applications

Material DesignMaterial Design

Material Design ExamplesMaterial Design Examples

Material Design RationaleMaterial Design Rationale
Material Design is Google’s best practices for Android app design
Material Design Covers
● Colour Palettes
● Icons
● Margins and Borders
● Typography
● Elevations
● Animations
Adhering to Material Design is important to get the app
promoted by Google

Introduction to JavaIntroduction to Java
Java is an open source programming languge
developed by Sun and maintained by Oracle
Object Oriented
Current version is 1.8 but most Android apps use 1.7
Java is found in enterprise applications, Android Studio
and Android

Hello World in JavaHello World in Java

Java vs Java on AndroidJava vs Java on Android

Android StudioAndroid Studio

Activity
Service Content
Provider
Broadcast
Receiver

Four Pieces of an Android AppFour Pieces of an Android App
Activity
● The user facing part of an app
● Can be thought of as the screens users interact with
Broadcast Receiver
● Handles events
● Can be app generated or system events
Service
● Runs in the background
● Can perform tasks (Intents) outside of the application
Content Provider
● Exposes app data to other applications

Podcast Android AppPodcast Android App

Introduction to MainActivityIntroduction to MainActivity
The first activity of an Android app is referred to as the
MainActivity
Activities have two basic components:
Java class file that extends Activity or
AppCompatActivity
XML Layout file

activity_main.xmlactivity_main.xml

activity_main.xml in Layout Editoractivity_main.xml in Layout Editor

MainActivity.javaMainActivity.java

AndroidManifest.xml
Describing our App to Android
AndroidManifest.xml
Describing our App to Android

Android Developers
https://developer.android.com/index.html
Material Design for Android
https://developer.android.com/design/material/index.html
Google ResourcesGoogle Resources

PodcastsPodcasts
Fragmented
Covers a wide range of subjects regarding Android
and Java
Android Developers Backstage
Google podcast that deep dives into all things Android
and coding

Udacity
Free courses by Google About Android
Udacity
Free courses by Google About Android

Caster.io
Short Tutorials on Android Topics
Caster.io
Short Tutorials on Android Topics

Words of Wisdom on Android TutorialsWords of Wisdom on Android Tutorials
Android tools and best practises
are changing every year so
when seeking out answers pay
special attention to the date it
was written

MeetupsMeetups
Toronto Android Developers
https://www.meetup.com/ToAndroidDev/
Toronto Java User Group
https://www.meetup.com/Toronto-Java-Users-Group/
Mobile Growth Meetup
https://www.meetup.com/Mobile-Growth-Toronto/

Thanks for ListeningThanks for Listening
Happy Coding
&
Good Luck

Introduction to Android App Development

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