Eclipse + Mobile = Mobile Tools for Java
David Marques
david.marques@cesar.org.br
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Unit Testing
Internationalization
Preprocessing
Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Mobile Tools for Java Overview
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MTJ Overview
 Extend existing Eclipse platform to support mobile Java
application development
 Integrates with most Software Development Kits (SDKs) available
 MTJ does not ship any SDK, it is the device manufacturer's
responsibility to distribute their SDKs
Vendor A
UEI
SDK MTJ JavaME SDK
Extens.
JDT
Vendor Vendor B
Eclipse Platform Proprietary JavaME SDK
Protocol
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MIDlet Templates
Mobile Tools for Java Overview
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MIDlet Templates
 Reduces the effort to create
applications from scratch
 Allows customizing templates
without writing source code
 Custom templates can be
added to the environment
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MIDlet Templates
Basic Splash Screen
Basic Game Infrastructure Application
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Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Application Packaging
 Resolves project dependencies
 Packages third party libraries
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Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Package Obfuscation
 MTJ integrates with
proguard to provide
obfuscation
 ProGuard is an open
source Java class file
optimizer, obfuscator
 Proguard must be
downloaded separately
from MTJ
Proguard WebSite (http://proguard.sourceforge.net/)
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Demo Part 1
 Import installed SDKs
 Create a MIDlet Suite Project
 Create a MIDlet from a
template Part 1
 Package application for
deployment
 Create an obfuscated package
for deployment
 Run/Debug Application
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Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Multi device configuration
 Applications are developed for
a wide range of devices
 Device fragmentation problem
affects mobile developers
 MTJ allows developing
applications for multiple target
devices
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Multi device configuration
 Every configuration has one
associated device
 Every configuration has it's
own symbol set
 Workspace level symbol sets
(imported from device
database)
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Multi device configuration
 It is possible to package either one or all
configurations
 Every configuation is packaged on it's
own folder under the deployed folder
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Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Build Configuration
 Every device configuration
requires a different set of
resources
 Customizing packages for
different devices manually is
very error prone
 The build editor allows
selecting which resources to
package on each device
configuration
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Preprocessing
Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Preprocessing
 Preprocessing is very usefull since mobile applications need to
target several devices
 MTJ uses Antenna in order to provide preprocessing support
 Antenna is another open source project. It can be dowloaded
from (http://antenna.sourceforge.net/)
 Antenna preprocessor defines
 Preprocessor language
//#if ScreenWidth>100 && ScreenHeight>120
do something;
//#else
do something else;
//#endif
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Preprocessing
 Built in code
assitant for
preprocessing
statements
 All available
statements are
listed with brief
descriptions
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Preprocessing
 Built in code
assitant for
preprocessing
symbols
● It is possible to
define custom
symbols
● Each symbol has
 Name, Value, if active on active configuration
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Demo Part 2
 Setup multi device
configuration
 Setup build configuration
 Enable preprocessing Part 2
 Manage preprocessing symbol
sets
 Add preprocessing to our
example
 Build and package applications
for all configurations
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Internationalization
Preprocessing
Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Localization
 Mobile applications are used
all over the world
 Localizing applications must
not bring an overhead to the
development process
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Localization
 Localization is
done through
key/value pairs
 Keys will have
localized values for
every locale
desired
 All keys defined
are available to the
application's code
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Localization
 A properties file is generated for
every locale configured
 The L10nResources class is used
to get the localized values
 All localized keys are created within
the L10nConstants class
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Unit Testing
Internationalization
Preprocessing
Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
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Unit Testing
 Every application needs to be tested in order to achieve quality
standards
 The testing framework must be tightly integrated within the IDE
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Unit Testing
 Running/Debugging test
cases is as simple as running
a MIDlet
 The test results are exibited
on the device's screen
 It is possible to package the
tests in order to run on a real
device
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Demo Part 3
● Setup localization
● Create localized resources
● Add localization into the
application code Part 3
● Enable unit testing
● Create Unit Tests/ Suites
● Run Tests
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Unit Testing
Internationalization
Preprocessing
Build Configuration
Multi Device Support
Package Obfuscation
Application Packaging
MIDlet Templates
Mobile Tools for Java Overview
Eclipse Pulsar Working Group
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Eclipse Pulsar Working Group
 Pulsar is an industry working group to promote collaboration
between mobile industry players
 Pulsar early access package is available for download from eclipse
web­site. (http://www.eclipse.org/pulsar)
 First official release with Eclipse Galileo, the annual release of
Eclipse projects on June 25th. (http://www.eclipse.org/galileo)
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Eclipse Pulsar Package
 Tools integration platform for mobile
development
 Easy to install and update tools and
SDKs
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Eclipse Pulsar Package
MTJ Eclipse other
IDE
Pulsar IDE
Package
& In stall
n load
Dow
Discover SDKs Redirect to
Pulsar SDK
Package
Pulsar Server
User Desktop Eclipse.org SDK Plugin Provider Server
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Mobile Tools for Java Overview
Eclipse Pulsar Working Group
Open Source Community
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How to participate
 As an open source project everyone is welcome to contribute
 Send new ideas
 Help with bug fixes
 Propose new features
 Join our test team
DSDP MTJ Web site: http://www.eclipse.org/dsdp/mtj
DSDP MTJ Wiki: http://wiki.eclipse.org/DSDP/MTJ
Newsgroup: news://news.eclipse.org/eclipse.dsdp.mtj
Developer List: http://dev.eclipse.org/mailman/listinfo/dsdp­mtj­dev
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Conclusions
 MTJ provides several features in order to improve mobile Java
development
 It requires a very low learning curve since it follows Eclipse
standards and everyone uses Eclipse :)
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Questions
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Eclipse + Mobile = Mobile Tools for Java
David Marques
david.marques@cesar.org.br
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