This sample demonstrates how to package Java classes into an iOS dynamic framework and call the packaged classes via JNI from a native Objective-C app.
The first step to run this sample is to build the framework via Maven or Gradle. Either run
../gradlew -Probovm.enableBitcode=true build robovmInstall
or
mvn -Drobovm.enableBitcode=true compile robovm:install
This will create the framework in target/robovm/MyJavaFramework.framework.
The native app using this framework can then be launched using the CounterUI
Xcode project.
NOTE: The Xcode project depends on
Carthage. Carthage must be installed
in /usr/local/bin/carthage in order for this sample to work.
The Java CounterService class is wrapped by the Objective-C CounterService
class in CounterService.m.
In order to link against the dynamic Java framework the
MyJavaFramework.framework library has been added to the Link Binary With Libraries build phase on the CounterUI target.
Also, a Run Script phase has been added to the build phases of the
CounterUI target. This Run Script phase runs /usr/local/bin/carthage copy-frameworks with $(SRCROOT)/../target/robovm/MyJavaFramework.framework
as input file. This is necessary to have the framework copied properly and
unnessary architectures removed from the dynamic library file when launched on
the simulator or on device. This script also takes care of signing the
framework.