If you want to start a good career in Android Development, this presentation gives you a basic introduction about Android, and how you can develop your very first Android Application.
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Operating System & Software Development Kit
Overview Introduction to Android Architecture of Android
Application Building Blocks Developing Android App Career
Opportunities
Introduction
Introduction to Android Open Source Software Platform for
Mobile Application Development An Open Handset Alliance Project,
acquired by Google, Inc. in 2005 A Complete Stack Operating System
+ Middleware + Applications Powered by Linux Operating System
Developed using C/C++ , provide development using Java
Android Powered Devices Smart Phones Tablets Washing Machine
Coffeemaker (Appresso) Watch Android Powered Microwave (MAID)
Camera (Coolpix S800c) Gaming Console E-Bike (concept by Ford Motor
Co.) Android Powered Headrest Ninja Robot (boxing robot) Android
Powered Refrigerator Smart TV & Pocket TV Chevrolet Volt
integrated with Android
Architecture
Architecture of Android Applications Application Framework
Libraries Android Runtime Linux Kernel Android Runtime Libraries
Linux Kernel Dalvik Virtual machine Application Framework
Applications C/C++ Libraries Work asfile (Hardware Abstraction
Layer) .dex HAL API Interface application Built in and User
Interface through Java Device Drivers Efficient Compact and
Activity manager.apk files Can install using Limited memory &
Power Handling User Interface memory management Content
->Phone-> .jar ->WeChat, Web Browser, Providers Example:
.class Dialer, .dex .java 2D/3DAndroid or others Graphics Process
Management Hello Location Manager etc Core LibrariesBrowser Engine,
SQLite Media Acces, Networking Java Standard Edition
Application Building Blocks
Application Building Blocks Activity Intents Service Content
Providers
Activities Corresponds to one UI Screen But they can be
faceless, floating window, return a value
Intents Think intent as an object or description what you want
DONE! Example- view, call, play etc. System matches intent with
activity that can best provide the service Activities and
IntentRecievers describe what intent can service Activity 1 Intent
(says : I want to do this) Activity 2
Services Components that run in a background Music player,
download etc.
Content Providers App 2 App 1 Sharing of data across
applications Address book, photo gallery Provide uniform API for:
Content Provider (eg. address book) Query Delete, update &
insert App 3 App 4
Developing Android App
Android Software Development Kit (SDK) Java SDK (at least Java
SDK 5) Android SDK
(http://developer.android.com/sdk/index.html)
Android SDK
Android Software Development Kit (SDK) Install the Java and set
CLASSPATH and PATH Unzip the downloaded Android SDK, and run
Eclipse (run as admin)
Whats inside an App ? Default Activity Libraries Other Default
Default Activities Activity Activity Service Content Android
Manifest Drawable Layouts Values Assets
Android SDK Manager Using this tool, we can download the
required APIs & Libraries, for application.
Lets start developing Start Eclipse (ADT) File -> new ->
project Select Android Application Project Click next
Enter Application Name HelloAndroid Enter Project Name
HelloAndroid Enter Package Name com.example.helloandroid Minimum
Required SDK API 10 Target SDK : API 10 Compile With: API 10 Theme
: none
Lets start developing Choose all other options as default.
Click next -> next -> next -> finish.. Now we are ready to
Code and Develop
Lets start developing MainActivity.java : for back-end
programming Activity_main.xml : for designing layout (UI) Double
Click the activity_main.xml Eclipse will show its Graphical layout
: for drag-n-drop design Activity_main.xml : for code based
design
Lets start developing In this application, we want to bind an
event to that button Whenever user click (or touch) that button,
the text box must display Hello Android We have designed our UI,
and now its time for code in java.
Running the Application We need to set an emulator to test on
PC. In eclipse, click Android Virtual device Manager icon. It will
popup a dialog box, that you can use to create your emulator. In
that dialog box, click new button to add an emulator.
Wowww!! We have done it! Now its ready to launch Press Ctrl +
F11 to Run
Congratulations! You create your very first App! Now, its time
to publish it to the world
Publishing Android App on Google Play Store
https://play.google.com/apps/publish/signup/ $25 (Rs. 1600 1700)
one time fee, pay via Google Wallet
Upload APK file Find .apk of your project in bin folder of your
workspace Upload it using Screen Instructions Manage Pricing &
Distribution Manage Store Listing Available for end-user, anywhere
in the world
Career Opportunities
Career in Android Development Salary Highest Salary Increases
9% from 2012-2013 2012 : $85,000 - $1,22,500 , 2013 : $92,750
$1,33,500 (networkworld.com survey) Future Scope & Growth The
more devices, the more software required, the more developer
required Get experience in Java & programming, help you to
switch if you needed