Using Ruby in Android Development

Using Ruby in Android Development

• 1.
  Using Ruby forAndroidDevelopment
• 2.
  BackgroundAndroid is abig step forward in mobile operating systemsBut… Java?Dynamic script languages are more productiveAnd don’t have to be too slowFour main ways to leverage Ruby…
• 3.
  Leveraging Rubyfor AndroidScripting: automate phone tasks and testing“From scratch” app development replace JavaFramework developmentLess Ruby, compiled RubyApp integrationFull Ruby via server
• 4.
  Rubotohttp://github.com/rubotoRuboto-core[sudo] gem installruboto-coreRuboto-core-irbRuboto-demos* Ruboto slides here derived from earlier presentations by Daniel Jackoway. Apologies for missing attribution in original post.
• 5.
  Android in Rubypublicvoid Activity.onCreate(Bundle bundle)public void Activity.onPause()public void onClick(View view)handle_create do |bundle|handle_pause dohandle_click do |view|
• 6.
  How It WorksYourActivity< RubotoActivity < ActivityRubotoActivity implements callbacks
• 7.
  They tell Rubyto exec blocks, pass params alongRuby for Scripting: IRBhttp://www.appbrain.com/app/ruboto-irb-%28ruby-on-android%29/org.ruboto.irb
• 8.
  Activities only
• 9.
  Can’t ship .apkRuboto-coreGoals
• 10.
  Anything you cando with Java
• 11.
  Zero Java
• 12.
  Zero XML
• 13.
  Support pluginsRuboto InstallJDK
• 14.
  JRuby (rvm)
• 15.
  Android SDK
• 16.
  Generate an emulator
• 17.
  gem install ruboto-coreRubotoApp Generation$ ruboto gen app \
• 18.
  $ --package com.adamblum.andevcon\
• 19.
  $ --path andevcon\ # where app files go
• 20.
  $ --name andevcon\ # Name of app
• 21.
  $ --target android-8\ # Froyo
• 22.
  $ --activity MyActivity# Name of ActivityRuboto App Generation$ ruboto gen app \
• 23.
  $ --package com.adamblum.andevcon\
• 24.
  $ --path andevcon\ # where app files go
• 25.
  $ --name andevcon\ # Name of app
• 26.
  $ --target android-8\ # Froyo
• 27.
  $ --activity MyActivity# Name of ActivityRuboto Activityassets/scripts/my_activity.rb
• 28.
  require 'ruboto.rb’
• 29.
  ruboto_import_widgets :TextView,
• 30.
  :LinearLayout,:Button
• 31.
  $activity.handle_create do |bundle|
• 32.
  setTitle 'This isthe Title’Ruboto Activity (continued)setup_content do
• 33.
  linear_layout :orientation =>LinearLayout::VERTICAL do
• 34.
  @text_view = text_view :text => "What hath Matz wrought?"
• 35.
  button :text => "M-x butterfly", :width => :wrap_content
• 36.
  end
• 37.
  end
• 38.
  handle_click do |view|
• 39.
  if view.getText == 'M-x butterfly'
• 40.
  @text_view.setText "What hath Matz wrought!"
• 41.
  toast 'Flipped a bit via butterfly'
• 42.
  end
• 43.
  end
• 44.
  endInstall$ rake install# builds .apk, installs to emulator
• 45.
  $ rake; adb-d install -r bin/*-debug.apkRuby for An App Framework…RhodesPortabilityWrite it once and it runs on all smartphones: BlackBerry, iPhone, Windows Mobile, Android, Symbian, Win32Leverage Your Web SkillsBuild the app quickly in HTML and RubyOffline Use and Easy Backend IntegrationWork with synchronized local data when offlineEasily connect to any backend app through web servicesExploit device capabilitiesGPS, PIM data, camera, push/SMS, native mapping, barcode, signature capture, …Enterprise Security CompliantEncrypt data on the device, remote wipe of device, secure authentication…
• 46.
  Rhodes Architectureyour appcodeYou write:RhoSyncServermodelmodelHTML templatescontrollerRhodesappgeneratorBackendappsourceadaptermodelmodelHTML templatescontrollerBackendappsourceadapterRhodes componentsORM (Rhom)RubyexecutorWe provide:DevicecapabilitiesRhoSync clientBackendappsmartphone device
• 47.
  Rhodes vs. CompetitionOnlyone that supports all devicesOnly one with synchronized dataOnly MVC frameworkFirst Ruby on the deviceFirst and only hosted development service for mobile
• 48.
  Ruby for AppIntegration…RhoSync[sudo] gem install rhosyncWrite a “source adapter” QueryCreateUpdate DeleteEliminates many tasks in app integrationNo device integration/connection code (assumes in database)Removes data storage stepIf its Rails backend, not even source adapter is necessaryBetter user experienceData is realtime updatedNo wait for data to be retrieved
• 49.
  RhoSync Source Adapterrhosyncapp YourAppcdYourApprhosync source ProductGenerates …class Product <SourceAdapterdef query(params=nil) # TODO: Query your backend data source and assign the records # to a nested hash structure called @result. For example:end def create(create_hash,blob=nil) # TODO: Create a new record in your backend data sourceendend
• 50.
  RhoHubFirst and only“Development as a Service for mobile”More than 10,000 developers signed up in the last year~100 more per dayHosted development – WRITE APPS FOR IPHONES FROM WINDOWSWeb-based IDE for ease of useBuild for all smartphones online – no need to install SDKsHosted runtimeNo need to set up RhoSync serverCollaboration Work with other developers on same project over the web
• 51.
  Resourceshttp://github.com/ruboto
• 52.
  http://docs.rhomobile.com
• 53.
  http://rhomobile.com/products/rhodes
• 54.
  http://rhomobile.com/products/rhosync
• 55.
  http://rhohub.com
• 56.
  adam@rhomobile.com