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Applico Android Info Session at Columbia University
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Applico Android Info Session at Columbia University



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  • 1. Applico…Android...…and All the Above
  • 2. Agenda Applico: Who We Are Android – What is it? Android Classic Android Tablet Android Now - ICS Android Compatibility Future of Android
  • 3. Applico Headquartered in Manhattan (23rd and 3rd), with offices in LA, Chicago and Boston (2012) We make mobile apps … and more! Technical footprints come from the DoD We don’t just make apps, we make systems.
  • 4. Android – What is it? Technology stack that includes an operating system and a set of APIs Based on the Linux kernel and Java. Supports SQLite for data storage Supports various media formats Integrated browser based on WebKit ….. And More!
  • 5. Android 1.6 – 2.X Classic Android (< 3.0) Each Screen (Activity) has its own activity lifecycle  onCreate  onRestart  onStart  onResume  onPause  onStop  onDestroy
  • 6. Android 1.6 – 2.X Tomaximize screen real- estate, navigation elements were off screen  Menu Button  Gesture’s are rarely used  The back button was used to navigate throughout the app
  • 7. Android 1.6 – 2.X Rotation changes had the potential to kill long running processes. 3D Animations (for the most part) were dedicated tasks for OpenGL There is no support for hardware acceleration Devices typically fell into 4 sizes and 3 resolutions  Small, Normal, Large, X-large (2.3)  LDPI, MDPI, HDPI
  • 8. Honeycomb Honeycomb (3.x) is targeted at just tablets Each Activity still has its own lifecycle, but that activity now contains elements (Fragments) each with their own lifecycles.  onAttach  onCreate  onCreateView  onDestroyView  onDetach
  • 9. Honeycomb Pre-Honeycomb Honeycomb Activity Activity Fragment A Fragment BI have one model view and I have one I have one controller! model view model view and and controller! controller!
  • 10. Honeycomb How can you add fragments to your activity?  Programmatically FragmentTransaction ft = getFragmentManager().beginTransaction(); FooFragment frag = new Fragment(); ft.add(id, frag); Ft.commit;  Through Layouts  <fragment android:name=“com.foo.FooFragment” android:Id=“@+id/foo” android:layout_width=“wrap_content” android:layout_height=“wrap_content”/> Don’t think of Fragments as UI elements!
  • 11. Honeycomb Nomore menu options!  Hardware button is being phased out  All navigation is being moved to an on screen model  System Bar  Action Bar
  • 12. Honeycomb New Animation library Renderscript  Renderscript is based on C. Provides some performance gains over OpenGL  Usability, while it is a set of new APIs it does simply development and makes the initialization of rendering easier Support for large heap. Devices can allocate up to 256MBs to the heap compared to 2.X which is 16MB Multiple Screen Sizes are now based on width:  Before: res/layout-small, res/layout-normal, res/layout- large  Now: We use minimum screen width, res/sw600dp, res/sw800dp  While it’s not idea it gives developers more control when dealing with OEMs
  • 13. Ice Cream Sandwich – 4.0 Ice Cream Sandwich!!!! It’s a unified version of the OS that combines Honeycomb and 2.X  Fragments and Loaders  On Screen Navigation – Good-Bye Hardware Buttons! Build once for phones and tablets, no need for multiple APKs. Also adds facial unlock, NFC, camera enhancements, a social networking api, an official calendar API (Hooray!) and much more
  • 14. Ice Cream Sandwich How do I check for dual pane mode?  Add a view to your layout!  If the View is null, start a new activity, otherwise show the fragment View detailsFrame = getActivity().findViewById(R.id.details); if(detailsFrame != null){ mDualPane = true; } If(mDualPane){ showFragment(…use the fragment manager) }else{ startActivity(); }
  • 15. Ice Cream Sandwich
  • 16. Compatibility How do I target the largest audience? Android penetration of Feb 1, 2012  Android 4.0 : 1%  Android 3.0 : 3.5%  Android 2.2 – 2.X: 86.4% *Source: http://developer.android.com/resources/dashboard/platform-versions.html Unless you need specific 3.0+ API support target 2.2+!!! (You can still turn on large heap and hardware acceleration in the manifest file, older versions will still run and ignore it!)
  • 17. Compatibility Why?  There are a lot of nice APIs available for 3.0+, but the biggest changes to prepare for are the architectural and navigational ones.  85%+ is using 2.2! How can I make legacy apps feel ICS/Honeycomb like and use the new design patterns?  Compatibility packages!  Support for Android 1.6+
  • 18. Compatibility What’s in it?  Official Android Package supports Fragments!  ActionBarSherlock is an open source extension to the compatibility package! *source: http://actionbarsherlock.com/ How do I use it?  The official support package is a jar that you can include in your project  The ActionBarSherlock is a library project Using these libraries will help prepare you to officially support ICS while not having to design two apps and maintain two apk’s.
  • 19. Future of Android ICS will penetrate the market slowly. Need for multiple APKs will dwindle Ultimately I would bet on the back button disappearing (usability issues) More NFC! Integration with Android@Home
  • 20. Questions?