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Android Tutorial Cover page Android About the Tutorial Android is an open-source, Linux-based operating system for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies. This tutorial will teach you the basic Android programming and will also take you through some advance concepts related to Android application development. Audience This tutorial has been prepared for beginners to help them understand basic Android programming. After completing this tutorial, you will find yourself at a moderate level of expertise in Android programming from where you can take yourself to next levels. Prerequisites Android programming is based on Java programming language. If you have a basic understanding of Java programming, then it will be fun to learn Android application development. Copyright & Disclaimer Copyright 2014 by Tutorials Point (I) Pvt. Ltd. All the content and graphics published in this e-book are the property of Tutorials Point (I) Pvt. Ltd. The user of this e-book is prohibited to reuse, retain, copy, distribute or republish any contents or a part of contents of this e-book in any manner without written consent of the publisher. We strive to update the contents of our website and tutorials as timely and as precisely as possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I) Pvt. Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of our website or its contents including this tutorial. If you discover any errors on our website or in this tutorial, please notify us at [email protected] i Android Table of Contents About the Tutorial ............................................................................................................................................ i Audience........................................................................................................................................................... i Prerequisites ..................................................................................................................................................... i Copyright & Disclaimer ..................................................................................................................................... i 1. ANDROID – OVERVIEW ............................................................................................................ 1 What is Android? ............................................................................................................................................. 1 Features of Android ......................................................................................................................................... 1 Android Applications ....................................................................................................................................... 2 2. ANDROID – ENVIRONMENT SETUP.......................................................................................... 3 Step 1 - Setup Java Development Kit (JDK)....................................................................................................... 3 Step 2 - Setup Android SDK .............................................................................................................................. 4 Step 3 - Setup Eclipse IDE ................................................................................................................................. 5 Step 4 - Setup Android Development Tools (ADT) Plugin ................................................................................. 6 Step 5 - Create Android Virtual Device ............................................................................................................. 8 3. ANDROID – ARCHITECTURE ................................................................................................... 10 Linux kernel ................................................................................................................................................... 10 Libraries ......................................................................................................................................................... 10 Android Runtime ........................................................................................................................................... 11 Application Framework ................................................................................................................................. 11 Applications ................................................................................................................................................... 11 4. ANDROID – APPLICATIONS COMPONENT .............................................................................. 12 Activities ........................................................................................................................................................ 12 Services ......................................................................................................................................................... 12 Broadcast Receivers ....................................................................................................................................... 13 ii Android Content Providers .......................................................................................................................................... 13 Additional Components ................................................................................................................................. 13 5. ANDROID – HELLO WORLD EXAMPLE .................................................................................... 15 Create Android Application ........................................................................................................................... 15 Anatomy of Android Application ................................................................................................................... 16 The Main Activity File .................................................................................................................................... 18 The Manifest File ........................................................................................................................................... 19 The Strings File .............................................................................................................................................. 20 The R File ....................................................................................................................................................... 21 The Layout File ............................................................................................................................................... 22 Running the Application ................................................................................................................................ 23 6. ANDROID – ORGANIZING & ACCESSING THE RESOURCES ..................................................... 24 Organize Resources ....................................................................................................................................... 24 Alternative Resources .................................................................................................................................... 25 Accessing Resources ...................................................................................................................................... 27 Accessing Resources in Code .......................................................................................................................... 27 Accessing Resources in XML ........................................................................................................................... 28 7. ANDROID – ACTIVITIES .......................................................................................................... 30 8. ANDROID – SERVICES ............................................................................................................ 36 9. ANDROID – BROADCAST RECEIVERS ...................................................................................... 46 Creating the Broadcast Receiver .................................................................................................................... 46 Registering Broadcast Receiver ...................................................................................................................... 46 Broadcasting Custom Intents ......................................................................................................................... 48 10. ANDROID – CONTENT PROVIDERS ....................................................................................... 55 Content URIs .................................................................................................................................................. 55 iii Android Create Content Provider ................................................................................................................................ 56 11. ANDROID – FRAGMENTS ..................................................................................................... 70 Fragment Life Cycle ........................................................................................................................................ 71 How to use Fragments? ................................................................................................................................
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