Non Conventional Android Programming En

1. Non-conventional Android Programming

2. Who am I? Davide Cerbo http://jesty.it http://davide.cerbo.born-to-co.de http://www.linkedin.com/in/davidecerbo [email_address]

3. http://www.pro-netics.it [email_address]

4. Once upon a time...

5. New Features GPS

6. Compass

7. Camere

8. Hi-Res Screen

9. WI-FI

10. UMTS / HSPDA

11. Multi-touch

12. Where we going?

13. (market)

14. Too much devices

15. Many languages for many devices IPhone: Objective C

16. Android: Java

17. BlackBerry: Java

18. Nokia/Symbian: Java e C++

19. Windows Mobile: .NET e C

20. Write once, run anywhere Do you remember?

21. PhoneGap HTML + JAVASCRIPT + CSS = PhoneGap.com

22. PhoneGap CROSS PLATFORM + API NATIVE INTERFACES + OPEN SOURCE = PhoneGap.com

23. What I'm able to do? ...and coming soon: camera, maps and file manager

24. Examples //GEO REFERENCING var getLocation = function () { var suc = function ( p ){ alert ( p . coords . latitude + " " + p . coords . longitude ); }; var fail = function (){ alert ( "Location not available!" );}; navigator . geolocation . getCurrentPosition ( suc , fail , undefined ); } //VIBRACALL navigator . notification . vibrate ( 0 ); //BEEEEEEP navigator . notification . beep ( 2 );

25. Examples //ACCELEROMETER var watchAccel = function () { var s = function ( a ){ document . getElementById ( 'x' ). innerHTML = roundNumber ( a . x ); document . getElementById ( 'y' ). innerHTML = roundNumber ( a . y ); document . getElementById ( 'z' ). innerHTML = roundNumber ( a . z ); }; var d = function (){}; var opt = {}; opt . frequency = 100 ; Timer = navigator . accelerometer . watchAcceleration ( s , f , opt ); } //CAMERA navigator . camera . getPicture ( dump_pic , fail , { quality : 50 }); function dump_pic ( data) { ... document . getElementById ( "test" ). src = "data:image/jpeg;base64," + data ; }

26. Where's the trick? PhoneGap give us a startup project for every supported device. Every project is a simple application made of a web browser that work as a fullscreen app and where javascripts object will be injected. These objects has native API counterpart inside the device. We need to copy html, css, javascript and images into a specific project folder for every device that we need to deploy on. We also need to modify the project configuration, like project's name, author and so on... For Android copy these files into: ../my-android/assets/www/

27. Just to explain... ...take a look at this piece of code extracted from DroidGap.java included in the Android startup project: private void bindBrowser(WebView appView) { gap = new PhoneGap( this , appView); geo = new GeoBroker(appView, this ); accel = new AccelListener( this , appView); launcher = new CameraLauncher(appView, this ); // This creates the new javascript interfaces for PhoneGap appView.addJavascriptInterface( gap , "DroidGap" ); appView.addJavascriptInterface( geo , "Geo" ); appView.addJavascriptInterface( accel , "Accel" ); appView.addJavascriptInterface( launcher , "GapCam" ); }

28. Why Android? Open Source

29. Linux and Java based (Dalvik)

30. So many Devices

31. OS highly customized ?

32. Android 2.0 (Eclair) in deep Multiple Google accounts management

33. Microsoft Excange Server support

34. Home, Menu and Back buttons become optional

35. New HTML5 web browser

36. Camera application improved (flash, digital zoom, etc...)

37. SMS and MMS are now searchable

38. MOTOROLA DROID http://droiddoes.com

39. What about Spring?

40. SpringME Object configuration through XML

41. No reflection needed, auto-code generation

42. The final package does not contain extra libraries

43. Developed and maintained by Wilfred Springer, ex Tom Tom Software Architect

44. Apache MAVEN artifact plugin

45. Designed for J2ME but also suitable for GWT and Android

46. SpringME: how does it works? Spring use reflection for Dependency Injection Class cl = Class.forName("Person"); Object instance = cl.newInstance(); Method meth = cl.getDeclaredMethod("setName"); method.invoke(instance, new Object[] { "Nick Hornby" }); --------------------------------------------------------- ClassPathXmlApplicationContext appContext = new ClassPathXmlApplicationContext(...); BeanFactory factory = (BeanFactory) appContext; Person frank = (Person)factory.getBean(“frank”);

47. SpringME produce the code through the Apache Maven plugin Person instance = new Person(); instance.setName("Wilfred Springer"); --------------------------------------------------------- BeanFactory factory = new BeanFactory(); Person frank1 = (Person)factory.getBean(“frank”); Person frank2 = factory.getFrank();

48. Android + Maven Install the Android SDK

49. Setup the env variable ANDROID_SDK_15

50. Install Android into our maven repository , for example: mvn install:install-file -DgroupId=android -DartifactId=android -Dversion=1.5_r2 -Dpackaging=jar -Dfile=$ANDROID_SDK_15/platforms/android-1.5/android.jar

51. Let's create a brand new project: android create project --target 3 --name MavenAndroidExample --path ./maven-android-example --activity MavenAndroidActivity --package it.jesty.mavenandroid.example

52. Android + Maven Create a pom.xml file (we'll see it in the next slide)

53. Let's clean up the mess: rm -r bin build.xml build.properties libs

54. Create the emulator: android create avd --name mavenandroidadv --target 3

55. Execute the emulator: emulator -avd mavenandroidadv

56. Create our package with: mvn install (.apk file)

57. Let's deploy the .apk into our device: mvn com.jayway.maven.plugins.android.generation2:maven-android-plugin:deploy

58. ... <dependencies> <dependency> <groupId> android </groupId> <artifactId> android </artifactId> <version> 1.5_r2 </version> <scope> provided </scope> </dependency> </dependencies> <build> <sourceDirectory> src </sourceDirectory> <plugins> <plugin> <groupId> com.jayway.maven.plugins.android.generation2 </groupId> <artifactId> maven-android-plugin </artifactId> <version> 2.1.0 </version> <configuration> <sdk> <path> ${env.ANDROID_SDK_15} </path> <platform> 1.5 </platform> </sdk> <deleteConflictingFiles> True </deleteConflictingFiles> </configuration> <extensions> true </extensions> </plugin> ... Android + Maven

60. Android + Maven + SpringME Modify the pom.xml adding the SpringME plugin

61. Create the application-context.xml into /context: <beans> <bean id="ciao" class="it.jesty....Greeting" scope="prototype"> <constructor-arg value="Ciao" /> </bean> </beans>

62. Create the Greeting.java class

63. Modify the MavenAndroidActivity.java: public void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); TextView tv = new TextView( this ); tv.setText(((Greeting)new BeanFactory().getBean( "ciao" )) .to( "MavenAndroidActivity" )); //oppure: tv.setText(((Greeting)new BeanFactory().getCiao()).to(...)); }

64. Repeat 8 and 9 steps mvn com.jayway.maven.plugins.android.generation2:maven-android-plugin:deploy

65. ... <resources> <resource> <directory>${basedir}/context/</directory> <filtering>true</filtering> <includes> <include>**/*.xml</include> </includes> </resource> <resource> <directory> ${basedir}/target/generated-sources/spring-me </directory> </resource> </resources> <plugins> <plugin> <groupId>me.springframework</groupId> <artifactId>spring-me-maven-plugin</artifactId> <version>1.0-SNAPSHOT</version> <executions> <execution> <goals> <goal>generate</goal> <goal>dot</goal> </goals> <phase>generate-sources</phase> </execution> </executions> <configuration> <contextFile> ${basedir}/context/application-context.xml </contextFile> <className> it.jesty.mavenandroid.example.BeanFactory </className> <dotFile>${basedir}/target/poloko-context.dot</dotFile> </configuration> </plugin> ...

66. Android + Maven + SpringME <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema /beans http://www.springframework.org/schema/beans/spring- beans-2.0.xsd" default-lazy-init="true" > <bean id="ciao" class="it.jesty...Greeting" scope="prototype" > <constructor-arg value="Ciao" /> </bean> <bean id="hello" class="it.jest...Greeting" scope="prototype" > <constructor-arg value="Hello" /> </bean> </beans>

67. Android + Maven + SpringME package it.jesty.mavenandroid.example; public class Greeting { private String greeting; public Greeting(String greeting){ this .greeting = greeting; } public String to(String to){ return this .greeting + ", " + to; } }

69. Links and resources: Android http://www.android.com

70. PhoneGap http://phonegap.com

71. SpringME http://springframework.me http://sourceforge.net/projects/springme/

72. SpringME book http://www.scribd.com/doc/8611209/Spring-ME

73. Maven for Android http://code.google.com/p/maven-android-plugin http://code.google.com/p/masa

74. Android development guidelines http://developer.android.com/guide/practices/design/performance.html

75. Android, IPhone and IPod Touch Big Picture http://mashable.com/2009/09/15/iphone-android-apps-visualized/

76. Examples download: http://jesty.it/non-conventional-android-programming.zip The archive file contains: PhoneGap for Android demo

77. Apache Maven for Android examples

78. SpringME examples ...all fully functional !!! :)

Non Conventional Android Programming En

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