Android application development: a crash course

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ANDROID APP DEV CRASH COURSE SOHAM MONDAL Soham Mondal

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Soham Mondal WWW .BLRDROID.ORG

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WHY ANDROID? SOME GLOBAL NUMBERS Soham Mondal

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500,000,000 ANDROID DEVICES GLOBALLY h8p://ar=cles.=mesoﬁndia.india=mes.com/2012-‐06-‐28/telecom/32456734_1_android-‐devices-‐hugo-‐barra-‐smartphone-‐market Soham Mondal

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1,000,000+ ANDROID HANDSET ACTIVATIONS PER DAY h8p://ar=cles.=mesoﬁndia.india=mes.com/2012-‐06-‐28/telecom/32456734_1_android-‐devices-‐hugo-‐barra-‐smartphone-‐market Soham Mondal

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Soham Mondal ANDROID ON GOOGLE TV The same android codebase can run on android phones, android tablets and now even on televisions running Google TV

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SOME MORE HIGHLIGHTS New Cameras from Nikon and Sasmung expected to run Android, to make “intelligent” devices Android have been deployed on intelligent kiosks, cars and even household electronics devices Asus Nexus 7 tablet launched at $199 running Android 4.1 More Nexus devices expected from multiple manufacturers in October Soham Mondal

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ANDROID APP BUILDING BLOCKS Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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ANDROID BUILDING BLOCKS Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Ac=vi=es Soham Mondal

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ACTIVITIES •  Provides a screen with which users can interact in order to do something Example: dial the phone, take a photo, send an email, or view a map. •  Each activity is given a window in which to draw its user interface. •  An app usually consists of multiple activities •  Typically, one activity in an application is specified as the "main" activity, which is presented to the user when launching the application for the first time. Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Android manifest.xml Views Content providers Services No=ﬁca=ons Intents Soham Mondal

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INTENTS •  Intents are used to move from Activity to Activity •  describes what the application wants •  provides late runtime binding Soham Mondal

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INTENT INTENT ACTIVITY 1 ACTIVITY 2 ACTIVITY 3 Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Android manifest.xml Intents Content providers Services No=ﬁca=ons Views Soham Mondal

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VIEWS •  Views are UI basic building blocks •  Know how to draw themselves •  Respond to events •  Organized as trees to build up GUIs •  Described in XML in layout resources Soham Mondal

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UI ELEMENTS Ac=on Bar: made of a couple of ImageViews Soham Mondal

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UI ELEMENTS Individual elements ImageView TextView TextView Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Android manifest.xml Intents Views Services No=ﬁca=ons Content providers Soham Mondal

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CONTENT PROVIDERS •  Enable applications to store and share data. •  Makes a specific set of the application's data available to other applications. •  Date stored in the file system, in an SQLite database or on other platforms Soham Mondal

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File Ac=vity 1.1 Ac=vity 1.2 Ac=vity 2.1 Ac=vity 2.2 Applica'on 2 (wants phone number) Applica'on 1 (contacts app) Remote SQLite db Ac=vity 3.1 Ac=vity 3.2 Applica'on 3 Content Provider Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Android manifest.xml Intents Views Content providers No=ﬁca=ons Services Soham Mondal

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SERVICES •  Faceless task that runs in the background. •  No visual user interface •  Runs in the background certain period of time •  For example: Background music Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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NOTIFICATIONS •  Notifies the user about events •  Sent through NotificationManager •  Types – persistent icon – sound or vibration Soham Mondal

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ANDROID BUILDING BLOCKS Ac=vi=es Android manifest.xml Intents Views Content providers Services No=ﬁca=ons Soham Mondal

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Ac=vi=es ANDROID BUILDING BLOCKS Intents Views Content providers Services No=ﬁca=ons Android manifest.xml Soham Mondal

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ANDROID MANIFEST •  It names the Java package for the application. •  Components of the application — the activities, services, broadcast receivers, and content providers that the application is composed of. •  Permissions •  Lists the library •  And more Soham Mondal

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ANDROID DEVELOPMENT ENVIRONMENT Soham Mondal

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THE ECLIPSE IDE YOUR ANDROID DEVELOPMENT ENVIRONMENT Soham Mondal

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Perspec=ve Soham Mondal

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Views Edit Area Views Views Soham Mondal

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Shows the program and package structure Source of android programs are shown here Shows various console messages, problems etc Outline: Shows various program elements Soham Mondal

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THE UI EDITOR Soham Mondal

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Drag and drop elements Actual UI view Soham Mondal

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THE EMULATOR Soham Mondal

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Soham Mondal

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Soham Mondal

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Emulator screen Virtual keyboard Menu & other bu8ons Soham Mondal

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HOW TO INSTALL THE SDK Soham Mondal

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HOW TO INSTALL EVERYTHING? 1.  Eclipse Download and install eclipse classic: http://www.eclipse.org/downloads/ 2.  JDK Download and install: http://www.oracle.com/technetwork /java/javase/downloads/index.html 3.  Android SDK starter package Download and install: http://developer.android.com/sdk/index.html 4.  Android development tools (ADT) plugin Download from within Eclipse: https://dl-ssl.google.com/android/eclipse/ 5.  Add platform and other optional components from within eclipse Soham Mondal

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MONETIZING YOUR APP Soham Mondal

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APP MONETIZATION Free – Ad supported Premium – Pay per title Trial – Upgrade to Premium Freemium – In app billing Paymium – Premium + In-app billing Trial Paymium – Trial + Paymium Subscription – Auto recurrent payment Soham Mondal

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ADVERTIZING User launches your app User clicks on add in your app You get paid for each click Soham Mondal

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PUBLISHING YOUR APP Soham Mondal

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CHECKLIST Follow the checklist - http://developer.android.com/distribute/googleplay/publish/ preparing.html Upload your app apk at - https://play.google.com/apps/publish/ Soham Mondal

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Q&A @s0h4m [email protected] Soham Mondal