Java ME on Symbian JavaOne BoF Presentation RBH

8/14/2019 Java ME on Symbian JavaOne BoF Presentation RBH

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Java ME on Symbian

Daniel RochaNokia

Roy Ben HayunSymbian Press author


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> Foreword by James O. Coplien> Four different sections> Checkout podcast #77

http://community.

java.net/mobileandembedded/


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Agenda

> Introduction to the Symbian platform> Enter Java ME on Symbian> Java ME development for Symbian devices> Routes to market> Finding more information


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Agenda



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A short history: 10 years++

1998

2008

Copyright 2009 Symbian Foundation. Public

Symbian Ltdwas founded byEricsson,Motorola, Nokia,and Psion,to createSymbian OS

2009

Nokia acquires Symbian LtdThe Symbian Foundationis announced by the initialboard members.2006

100 millionphones shipped

250 million phones shipped200 millionphones shipped


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Truly Independent, Truly Open

6 Copyright 2009 Symbian

Foundation.


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> Open Source> Open Tools and SDKs> Open Development Process> Open Roadmap> Open Membership> (Almost) Open Website! - developer.symbian.org

Open In More Ways Than One!

Copyright 2009 Symbian

Foundation.7


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> Ten years of roadmap development Ever increasing completeness, predictability, compatibility, quality

> 250+ million devices 40+ million in Japan alone

> 250+ device models: numerous form factors> 250+ operators worldwide

Operator Review Board, complements TechCom> Tens of thousands of applications> 4 million developers

Native Symbian C++ Open Environment (POSIX-compliant) Web Run Time, Python, Ruby Java ME, Flash Lite, C# .NET, MS Silverlight


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Please welcomethe Symbian platform!

40 million lines of code (device/tools/test/PC)450,000 source code files

45,000 directories of source code files2000 software components

100+ packages3 layers covering 14 technology domains

1 unified mobile operating system


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Be calm Its Java ME!> MIDlet.. LCDUI.. GCF.. and all that Jazz..

> You can use MSA Component JSRs

> You can use WTK, Java ME SDK 3.0

> The familiar Java community and ecosystem

> Only it comes with the power of Symbian platform


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MSA support on Symbian platform> Evolutionary approach

> Highly consistent implementation on many devices

> JSRs are tightly integrated with native services

> Including many optional MSA features

> Lets have a quick look at a Symbian device?


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Taking a first on-device tour

> Deploy, install and run

> Supported MSA Component JSRs

> Task manager

> Application manager

> Security settings


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N95 on-device tour


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No fixed limits to computing resources

> No fixed limit to JAR size

> Expanding and shrinking Java heap

> Number of threads, connections, files, RMS size etc..

> Java ME applications are first class citizen

> Allows developers to focus on the main tasks


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Aim high its a smartphone!> Plan for high standards of UX

> Use the powerful multimedia capabilities

> Consider diversity of Symbian devices

> Consider synergy and interoperability

> Explore technical opportunities on Symbian devices


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Multitasking

> Symbian platform is a fully multitasking OS

> Java applications are first class citizens

> S60 JAD attributes for multitasking

> Users switch with Task ManagerDisplay.getDisplay(this).setCurrent(null);

this.resumeRequest();Display.getDisplay(this).setCurrent(form);


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Demo:Self-switching foreground & background


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Symbians JAD attributes (1/3)

> Graphics and UI attributes> Nokia-MIDlet-Target-Display-Size> Nokia-MIDlet-Original-Display-Size>

Nokia-MIDlet-Canvas-Scaling-Orientation-Switch

> Nokia-Scalable-Icon> Nokia-UI-Enhancement> Nokia-Scalable-Icon> Nokia-UI-Enhancement


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> Multitasking> Nokia-MIDlet-No-Exit> Nokia-MIDlet-Flip-Close>

Nokia-MIDlet-Background-Event


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> For touch devices> Nokia-MIDlet-On-Screen-Keypad> Nokia-MIDlet-App-Orientation


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Scaling: full screen, orientation switch,

no keypad> Attribute values:

Nokia-MIDlet-Canvas-Scaling-Orientation-Switch: true Nokia-MIDlet-Original-Display-Size: 240,320 Nokia-MIDlet-On-Screen-Keypad: no

> The image is changed, when sizeChanged() method is called> From 640x360 to 360x640, or vice versa, sizeChanged()

is called and orientation is changed


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eSWT

> eSWT is the embedded Standard Widget Toolkit> Subset of desktop SWT API + Mobile Extensions> eSWT API specification: Eclipse eRCP web page.

> Widget gallery ->http://www.eclipse.org/ercp/eswt/gallery/gallery.php


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IAP Info

> IAP Info API is a Java API, withwhich MIDlets can access internetaccess point group related information,including:

> Internet access point (IAP) relatedinformation (ID, type, name)

> Internet access point group (Destinationnetwork) related information (ID, name,IAPs contained)

> List of preferred Access Points

> Last used Access Point(for TCP socket connections)

> Connector.open("http://www.nokia.com;nokia_apnid=2")


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Improved security prompting

> Many improvements made after S60 3rd. FP2> Easier for the user to grant/deny permissions> Combined with checkPermission(), gives ideal

MIDlet usability when it comes to permissions.


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Java Runtime for S60

> Independent from S60 releases> Brings news features in a faster way> Selected S60 3rd Edition, Feature Pack 2 and S60

5th Edition devices> Allows users to update their Java Runtime to

support new features e.g. JSR 256 MobileSensor

> Inclusion in Symbian Foundation SDK TBD> NokiaN5800d-1/20.0.012/sw_platform=S60;sw_platform_version=5.0;java_build_version=1.3.4


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Mobile Sensor JSR 256

> Added with Java Runtime 1.4> Provides access to device sensors, like:> Accelerometer- Used to measure acceleration of

the device on three different axes (x, y and z).> Battery charge level sensor> Charger state sensor> Network field intensity sensor Used to measure

the intensity of the currently used cellular networksignal.


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Agenda



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Java ME SDKs for Symbian platform> WTK and Java ME SDK 3.0

> Nokia S60 3rd Edition SDK

> UIQ SDK

> SEMC SJP-3

> Motodev> Symbian^1 SDK WTK \ Java ME SDK 3.0

S60 UIQ

SEMC

UI Platform

OEM


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Symbian platform MIDP SDKs


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Emulation, vs Real emulationSymbian1 SDK emulator comes with full stackof Symbian platform!


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Demo Symbian^1 SDK


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Add the native tools to your toolbox

> Device features emulation e.g., SMS emulation, flip open/close etc..

> Native memory profiler> Native CPU profiler

> PC-Device connectivity


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Demo Nokia Energy Profiler


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Redirector API

//executing in a separate MIDlet, running in the backgroundclass MyRedirector extends Thread {

public void run() { ...

ic = (InputConnection)Connector.open("redirect://", );in = ic.openInputStream();...

len = inputStream.read(buffer);String s = new String(buffer, 0, len);

//show log \ send \ save to file.. etc.. appendLogMessage(s);}}


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Demo Redirector API


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On Device Debugging (under the hood)

IDE

SDK

launch

debug

SW Installer

SystemAMS

Debug Agent

VMKDP Agent

install

launch

start

start

JDWP KDWP

terminate


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Demo On Device Debugging on N95


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Ovi Store (1/4)


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Ovi Store (2/4)

> Main route to market for most companies> Access to 60+ devices and 50 million users (at

launch)

> Available in 190+ countries> Automated publishing system> QA done by Nokia> 70/30 revenue sharing> Allows publishing Java, Symbian and Flash Liteapps, content, widgets, media for tens of devices


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Ovi Store (3/4)

> Ovi Publisher guide:> Symbian apps -> need to be pre-tested and must

fulfill the Symbian Signed Certificationrequirements

> Java apps -> must be pre-tested and fulfill JavaVerified requirements.

> Java and Symbian unsigned apps are not allowedon Ovi Store.

> Lighter signing requirements: Thawte and VeriSign signing for Java are accepted Symbian Express signing is accepted


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Ovi Store (4/4)


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Symbian Signed> NOT relevant to MIDP applications!!!

> But just so youll know.. Symbian OS is built around the Platform Security

concept

Applications need to be granted capabilities toexecute sensitive operations on the device

Simpler applications do not need any advancedcapabilities, and do not need to be (Symbian)

signed Capability granting is done through signing

(Symbian Signed)


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Finding more information

> Java ME on Symbian OS at www.wiley.com

> developer.symbian.org


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Summary


> Lots of demos.. books.. E71..


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Questions?


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Documents

Java ME on Symbian JavaOne BoF Presentation RBH