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Introduction to android


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Introduction to android

  1. 1. Basics Of Android Presented by S Srinivasan
  2. 2. Contents - Introduction to Android - Android Features - Hello world android application - Android Folder structure - Android manifest file
  3. 3. <ul><li>A software stack for mobile devices that includes operating system, middleware and key applications </li></ul><ul><li>Various versions of android OS: </li></ul><ul><li>Android 1.0,1.1 </li></ul><ul><li>Android 1.5 (CUPCAKE) </li></ul><ul><li>Android 1.6 (DONUT) </li></ul><ul><li>Android 2.0/2.1 (ECLAIR) </li></ul><ul><li>Android 2.2 (FROYO) </li></ul><ul><li>Android 2.3/2.3.3 (GINGERBREAD) </li></ul><ul><li>Android 3.0/3.2 (HONEYCOMB) </li></ul>Introduction to Android
  4. 4. <ul><li>Application framework enabling reuse and replacement of components </li></ul><ul><li>Dalvik virtual machine optimized for mobile devices </li></ul><ul><li>Integrated browser based on the open source WebKit engine </li></ul><ul><li>Optimized graphics powered by a custom 2D graphics library; 3D graphics based on the OpenGL ES 1.0 specification (hardware acceleration optional) </li></ul><ul><li>SQLite for structured data storage </li></ul><ul><li>Media support for common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF) </li></ul><ul><li>GSM Telephony (hardware dependent) </li></ul><ul><li>Bluetooth, EDGE, 3G, and WiFi (hardware dependent) </li></ul><ul><li>Camera, GPS, compass, and accelerometer (hardware dependent) </li></ul><ul><li>Rich development environment including a device emulator, tools for debugging, memory and performance profiling, and a plugin for the Eclipse IDE </li></ul>Android Features
  5. 5. <ul><li>Activities </li></ul><ul><li>Single screen with user interface </li></ul><ul><li>Services </li></ul><ul><li>Runs into background to perform long running operations </li></ul><ul><li>Content Providers </li></ul><ul><li>Manages shared set of application data. </li></ul><ul><li>Broadcast Receivers </li></ul><ul><li>Responds to system wide broadcast announcements. </li></ul>Android Application Components
  6. 6. <ul><li>Set up the Development environment that includes </li></ul><ul><li>1: Installing ADT plugin (Help -> Install New Software) </li></ul><ul><li>2: Install Android SDK Tools (Window -> Android SDK & AVD manager -> Available Packages) </li></ul><ul><li>3: Pointing ADT to Android SDK (Window -> Preferences -> Android) </li></ul><ul><li>Create new Android Project : </li></ul><ul><li>1: File->New -> Android project </li></ul><ul><li>2: Give all required information -> finish </li></ul><ul><li>Create new AVD(Android Virtual device) </li></ul><ul><li>It will be different for different android OS Versions </li></ul><ul><li>Code & Run the application. </li></ul>Hello World Sample Application
  7. 7. Android Folder Structure
  8. 8. <ul><li>Application must have android manifest file. (Generated automatically) </li></ul><ul><li>It does the following: </li></ul><ul><li>-Names the java package for your application </li></ul><ul><li>-Describes application components </li></ul><ul><li>-Declares the permissions that application must have in order to access some APIs or other application </li></ul><ul><li>-Declares the permission that others are required in order to access it's own components. </li></ul><ul><li>-Declares the minimum API Level that it requires. </li></ul><ul><li>-Lists the libraries that the application must be linked against. </li></ul>Android Manifest File
  9. 10. <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul>References
  10. 11. Happy Learning!!!