Android code lab @ GDG Indore

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Android Code lab Paresh Mayani

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Who am I? :D Android & WP7 Developer @Digicorp Head, GDG Ahmedabad @pareshmayani www.TechnoTalkative.com

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What is Android? Why Android? Where Android?

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Why Android? 1.3 Million Android Device Activations Per Day

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Why Android? 400 Million Total Android device Activated http://goo.gl/1f45r

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Why Android? 68.1% Android Market Share world wide – Q3 2012 http://www.huffingtonpost.com/2012/09/18/android-market-share-q3-2012_n_1893292.html

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Why Android? • We love and trust Google • Open Source • Larger screen size (iPhone is Fixed size :D ) • Google Play Store • Various Manufacturers

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Where Android?

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Where Android?

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Where Android?

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Where Android? http://goo.gl/s98Du Project Glass:

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Activities • Fundamental object of android app with lifecycle • Having UI • Interact with the user • One app can have Multiple activities • Must have 1 Main Activity

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Views • Basic building block for UI components • Draws itself to the screen • Respond to Events

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Intents • A simple message object that represents an "intention" to do something • Most significant use => launching of activities, where it can be thought of as the glue between activities.

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Services • can perform long-running operations in the background • Doesn’t Provide User Interface (UI) • Another application component can start a service and it will continue to run in the background even if the user switches to another application.

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Content Providers • presents data to external applications • provide a level of abstraction for any data stored on the device that is accessible by multiple applications.

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Android application - 3 Activity 3.1 Android application - 2 Activity 2.1 Activity 2.1 Android application - 1 Activity 1.1 Activity 1.2 Activity 1.3 Content Provider - A XML Data File SQLite Remote

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Building blocks of Android App Activities Views Services Content Providers Notifications Intents

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Notifications • A Notification is a small icon that appears in the status bar. • Users can interact with this icon to receive information • For example: New SMS message, Missed call, New Mail

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How to Install Android? 1. Download and setup the Eclipse IDE http://eclipse.org/downloads/ 2. Download JDK & Install http://www.oracle.com/technetwork/java/javase/downloads/index.html 3. Download the Android SDK starter package http://developer.android.com/sdk/index.html 4. Android Development Tools (ADT) plug-in , download from within eclipse https://dl-ssl.google.com/android/eclipse/

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How to Install Android? Download the SDK ADT Bundle for Windows • ADT (Android Developer Tools) Bundle • With a single download, the ADT Bundle includes everything you need to begin developing apps: – Eclipse + ADT plug-in – Android SDK Tools – Android Platform-tools – The latest Android platform – The latest Android system image for the emulator

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Android Development Environment

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Eclipse IDE Package Structure of your Android app Source Code Problems/Erros and Console messages Program Elements

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Eclipse UI Editor UI Elements UI View area

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Where to execute Android programs? - Emulator or Real Device

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Android Virtual Device Manager

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Android Virtual Device Manager

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Let’s create New AVD

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Android project structure

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Types of Layout Linear Layout Relative Layout Frame Layout Table Layout GridLayout

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Types of Widgets

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• Used to show captions or string values TextView

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Button • It used to execute some task based on the button’s click/selection action.

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EditText • Used to accept some inputs from the user.

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ImageView • Used to display image resources like logo, icon, etc.

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CheckBox • It’s for the selection of items.

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RadioButton • Its a two-states button that can be either checked or unchecked.

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Get in Touch twitter.com/pareshmayani fb.com/GDGAhmedabad http://gplus.to/GDGAhmedabad www.TechnoTalkative.com gplus.to/paresh.mayani