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JordanJozwiakNovember13,2011

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Agenda

WhyAndroid? Applicationframework Gettingstarted UIandwidgets Applicationdistribution Externallibraries Demo

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WhyAndroid?

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WhyAndroid?

Opensource Thatmeansthatitsfree!

EasytouseframeworkbasedonJava Truecustomization

Replacestockapps PersonalizeHomeScreenswithwidgets

Betternotifications Easiertopublishnoreviewprocess

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WhyAndroid?Security

ReputationaslesssecurethaniOS True,butitisstillverysecure!

Eachapplicationlivesinitsownsecuritysandbox SystemassignseachappauniqueLinuxuserID

Eachprocesshasitsownvirtualmachine,soanappscoderunsinisolationfromotherapplications

Permissionsareapprovedbytheuserduringappinstallation.

Appsaresignedbyadevelopersprivatekey

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Applicationframework

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Applicationframework

srcsourcefileswheretheactualcodingtakesplace

rescollectionofresourcesforscreenlayouts,images,sounds,text,animationsandmore.

ManifestrepresentsessentialinformationabouttheapplicationtotheAndroidsystem

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Applicationframework

srccodeexample

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Applicationframework

res res/drawablelogoandallimages

Customizablefordifferentpixeldensities res/rawsoundsandmusic res/layouttheXMLlayoutforeachactivity

Customizablefordifferentscreensizesandorientations

res/valuessavesallstringsandobjectstyles NotasstreamlinedorstandardizedasiOS

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Applicationframework

Layoutexample

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Applicationframework

Manifest Permissions

e.g.accessinternet,accessSMSmessages MinimumAPI Hardwareandsoftwarefeaturesrequired Youmustalsodeclareeveryactivityyoucreate!

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Applicationframework

Manifestexample

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ApplicationframeworkActivityLifecycle

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ApplicationFramework

Activity Visiblescreens

Service Backgroundservices

Contentprovider Shareddata

Broadcastreceivers Receiveandreacttobroadcastevents

Intent Launchnewactivities

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Gettingstarted

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Gettingstartedinstallation

GetthelatestJavaDevelopmentKit(JDK) GetthelatestversionofEclipseClassic(recommended)InstalltheAndroidSoftwareDevelopmentKit(SDK)

InstalltheAndroidDevelopmentTools(ADT)pluginforEclipse

Makesyourlifeeasier:letsyouquicklysetupnewAndroidprojects,createanapplicationUI,debugyourapps,andexport

APKsfordistribution!

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GettingstartedEclipse+ADT

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GettingstartedEmulator

Eclipse+ADT+Emulator=

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Gettingstarteddebugging

DDMSdebuggernotfun,butyoushoulddoit.

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UIandwidgets

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UIandwidgets

AndroiduserinterfaceiscomposedofhierarchiesofobjectscalledViews

View:adrawableobjectsuchasabutton,image,ortextlabel Widget:likeformtypesinHTML,waysthattheusercaninteractwiththeUIsuchasTextView,ListView,ScrollView,Spinner,TabWidget,Button

Layout:acontainerforwidgets

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UIandwidgets

LinearLayout,RelativeLayout,andTableLayout

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Applicationdistribution

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Applicationdistribution

PublishintheAndroidMarket Purchaseadeveloperaccountfor$25 ExportAPKfromEclipsewithADT UploadAPK,images,anddescription

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ExternalLibraries

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ExternalLibraries

Easilyaddexternallibrariesbyimporting3rdpartyJARs(.jarfiles)

Allowsyoutoeasilyintegratecoolfeaturesintoyourapp MakeuseofSDKsfrombigcorporations Sellingpoint Lesscoding

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ExternalLibrariesAnalytics

GoogleAnalytics(recommended)

Understandhowusersinteractwithyourapp Numberofvisitorsperday Timeonpage(inactivity) Demographicsandlocation Trackappversion Appinteraction(buttonpresses,conversions,etc.)

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ExternalLibrariesMonetization

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ExternalLibrariesMonetization

Opensourcephilosophy Peoplearelesswillingtopayforapps,sodevelopersmaymoneythroughadvertisements

AdMob(recommended) BoughtbyGooglein2009for$750million Paidbyclick,notbyimpression Easilytransferfundstoadvertiseyourownapp(20%bonus)

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ExternalLibrariesOthers

ManylargecompanieshavetheirownSDKsintheformofJARs

Facebook,Twitter,Dropbox,OpenFeint,etc. SearchonlineforJARsforotherfunctions(advancedmathoperations,etc.)

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Demo

TutorialforHello,world! http://developer.android.com/resources/tutorials/helloworld.html

TutorialsforViews http://developer.android.com/resources/tutorials/views/index.html

Othertutorials http://developer.android.com/resources/browser.html?tag=tutorial

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Thanksforcoming!