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Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
Mobile Application Development
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Mobile Application Development

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  • 1. twincling.org Mobile Application Development August 8th, 2009 Hyderabad, India
  • 2. twincling.org We appreciate
  • 3. twincling.org Outline ● Hello Android World ● Android Architecture ● Android SDK Overview ● UI Development ● 3D with OpenGL
  • 4. twincling.org What is Android? An Open Platform for Mobile Development ● A hardware reference design for mobiles ● A Linux operating system kernel ● Open source libraries ● A run time environment ● An application framework and UI framework ● Some pre-installed applications and ● Software Development Kit
  • 5. twincling.org Android SDK ● No licensing, distribution, or development fees ● Hardware access like network, Camera, accelerometer ● GSM, EDGE, and 3G networks ● GPS with location-based services ● Full multimedia hardware control including playback and recording using the camera and microphone ● Accelerometer and compass hardware ● IPC message passing ● Shared data stores ● An integrated open source WebKit-based browser ● Applications that integrate Map controls as part of their user interface ● Peer-to-peer (P2P) support using Google Talk ● Mobile-optimized hardware-accelerated graphics, both 2D and 3D ● Optimized memory and process management
  • 6. twincling.org Software Stack
  • 7. twincling.org Android Application ● Activity Manager ● Views ● Notification Manager ● Content Providers ● Resource Manager
  • 8. twincling.org Android Libraries ● android.util – string formatters, XML ● android.os – message passing, IPC, clock, debugging ● android.graphics – canvas, colors, primitives ● android.text – display, parse text ● android.database – cursors, database ● android.content – data access, content providers ● android.view – user interface ● android.widget – buttons, text boxes, list boxes etc ● com.google.android.maps – Google Maps ● android.app – Application, Activity and Services ● android.provider – standard content provider like Contacts ● android.telephony – phone stack ● android.webkit – Web-based content
  • 9. twincling.org Android Advanced Libraries ● android.location – Location access ● android.media – Audio and Video ● android.opengl – OpenGL ES API for 3D ● android.hardware – Camera, Accelerometer, Compass ● android.bluetooth - Bluetooth ● android.net.wifi - WiFi
  • 10. twincling.org SDK includes.. ● Android APIs ● Android project development tools ● Android executable(.dex) and packaging(.apk) tools ● Android Emulator ● Dalvik Debug Monitoring Service (DDMS) ● Documentation and Sample Code
  • 11. twincling.org SDK Setup ● http://code.google.com/android/download.html ● Android pluging available for Eclipse, Netbeans and IntelliJ with JDK 5 or later ● Android Development Toolkit (ADT) plugin https://dl-ssl.google.com/android/eclipse/ ●
  • 12. twincling.org Types of Android apps ● Foreground Activity ● Background Service ● Intermittent Activity
  • 13. twincling.org Component of an application ● Activities ● Services ● Content Providers ● Intents ● Broadcast Receivers ● Notifications
  • 14. twincling.org Process States and Priority
  • 15. twincling.org Activity Stack
  • 16. twincling.org Activity States ● Active ● Paused ● Stopped ● Inactive
  • 17. twincling.org State Changes
  • 18. twincling.org In code. package org.twincling.hello; import android.app.Activity; import android.os.Bundle; public class HelloWorld extends Activity { /** Called when the activity is first created. */ // Called at the start of the full lifetime. @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Initialize activity. setContentView(R.layout.main); } // Called after onCreate has finished, use to restore UI state @Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); // Restore UI state from the savedInstanceState. // This bundle has also been passed to onCreate. }
  • 19. twincling.org //Called before subsequent visible lifetimes //for an activity process. @Override public void onRestart(){ super.onRestart(); //Load changes knowing that the activity has already //been visible within this process. } //Called at the start of the visible lifetime. @Override public void onStart(){ super.onStart(); //Apply any required UI change now that the Activity is visible. } //Called at the start of the active lifetime. @Override public void onResume(){ super.onResume(); //Resume any paused UI updates, threads, or processes required //by the activity but suspended when it was inactive. } //Called to save UI state changes at the //end of the active lifecycle. @Override
  • 20. twincling.org //Called to save UI state changes at the //end of the active lifecycle. @Override public void onSaveInstanceState(Bundle savedInstanceState) { //Save UI state changes to the savedInstanceState. // This bundle will be passed to onCreate if the process is // killed and restarted. super.onSaveInstanceState(savedInstanceState); } // Called at the end of the active lifetime. @Override public void onPause(){ // Suspend UI updates, threads, or CPU intensive processes // that don’t need to be updated when the Activity isn’t // the active foreground activity. super.onPause(); }
  • 21. twincling.org // Called at the end of the visible lifetime. @Override public void onStop(){ // Suspend remaining UI updates, threads, or processing // that aren’t required when the Activity isn’t visible. // Persist all edits or state changes // as after this call the process is likely to be killed. super.onStop(); } // Called at the end of the full lifetime. @Override public void onDestroy(){ // Clean up any resources including ending threads, // closing database connections etc. super.onDestroy(); } }
  • 22. twincling.org Summary / Take home ● Android overview ● Get started on mobile app development
  • 23. twincling.org Resources ● Android http://developer.android.com/
  • 24. twincling.org Books
  • 25. twincling.org Special thanks AppLabs Pvt. Ltd. http://www.applabs.com/
  • 26. twincling.org info@twincling.org freedom of innovation 5,000+ members TSM (2nd Sat) BoF Hackathon Workshops 95+ college sessions and workshops Industry – Student interaction 7-member board of directors Hyderabad, A. P. twincling.org India Largest independent society in A.P.

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