introduction to android - tkk · 2013-06-25 · native c and c++ code for android ! high...

Introduction to Android T-110.5130 Mobile Systems Programming

Credits

!   Lecture and slides inspired by presentation given by Claudio Camacho and Ramon Sadornil from Android Aalto

! androidaalto.org

! www.claudiocamacho.com

! www.jush.org

30.1.2013 Kimmo Ahokas 2

Content

!   Android background

!   Design

!   Developing for Android

!   Android API


What is Android?

!   The world’s most popular mobile platform

!   675 000 Apps available in Google Play Store

!   First phone in 2008

!   Linux kernel

! Dalvik virtual machine


Android runs everywhere!


Android

!   Developed by Google

!   Open source

!   Free to use

!   Free SDK


Android Market

!   Easiest way to distribute software !   Not the only way

!   25€ starting fee

!   Income shared 70/30

!   No approval process, apps published in hours

!   In-app billing possible


Software versions


Design


Design Principles

!   Enchant Me

!   Simplify My Life

!   Make Me Amazing


Style

!   Flexible layouts

!   Themes

!   Feedback

!   Colors

!   Fonts

!   Icons


Patterns

!   Consistent user experience

!   Action Bar

!   Compatibility

!   Accessibility

!   Pure Android


Building Blocks

!   Ready-to-use elements

!   Tabs

!   Lists

!   Selectors

!   Dialogs

!   Progress


Developing for Android


Android SDK

!   Based on Eclipse and ADT plugin

!   Android SDK Tools

!   Android Platform-tools

!   Android Platform

!   Android system image for emulator

!   Get it: http://developer.android.com/sdk/index.html


Other development options

!   Not supported by Google or this course !   You can still use them if you want to

! IntelliJ IDEA !   Alternative for Eclipse

!   Vim, emacs and other text editors !   Download Android sdk tools and use Ant for building


Project Structure


!   Android Manifest

!   Source files

!   Binaries (NDK)

!   Libraries

!   Resources

Android Emulator

!   Run any version of Android

!   All different screen sizes available

!   Limit network speed

!   Emulate phone calls and sms messages

!   Screenshots

!   Mock locations

!   Lot more stuff hidden


Devices

!   Testing with real device

!   Enable USB debugging

!   Drivers !   OS X has built in drivers

!   In windows different drivers for every device


Debugging

!   Debugger

!   Test Framework

!   Code coverage

! Monkeyrunner


Android API


Activity


Fragment


Intent

!   Start other activities !   Even activities that are

not part of your own app!

!   Maybe the most powerful feature of Android

!   Share stuff via any installed app

!   Offer services for other apps


Notifications

!   Inform users about events in your app

!   Jelly Bean added basic interaction


Network

! HttpUrlConnection

! Never use any network api in your main thread! !   The UI hangs on older versions

!   Android 3.0 and later won’t allow it at all


Location

!   Locate user

!   Fine vs. Coarse location

!   Google Maps API


Native Development Kit

!   Native C and C++ code for Android

!   High performance but not so portable

!   Compile at least for ARM, preferably for x86 and MIPS

!   Adds complexity, try to avoid NDK

!   If Android API provides something, use it instead of NDK

!   Signal processing, physics


Other Things

!   Android Support Library

!   API examples

!   Project & Activity templates

! ActionBarSherlock


Excellent sources

! http://developer.android.com/index.html

! http://www.androiduipatterns.com/

! http://www.androidpatterns.com/

! http://androidaalto.org/


Contact

!   Questions Concerning Android project in Mobile Systems Programming course?

!   IRC: KimiA @IRCnet (probably fastest)

!   Mail: [email protected]


introduction to android - tkk · 2013-06-25 · native c and c++ code for android ! high...

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