From: brabuhr@...
Date: 2007-11-14T08:52:44+09:00
Subject: Re: Android + JRuby?

On Nov 13, 2007 6:41 PM,  <brabuhr@gmail.com> wrote:
> On Nov 13, 2007 3:38 PM, Charles Oliver Nutter <charles.nutter@sun.com> wrote:
> > John Joyce wrote:
> > > Hey Mr. Nutter...
> > > Any idea if JRuby will work on Android???
> > > Sure would be cool to have a Ruby angle on phone software, even though
> > > there is no Android phone yet...
> >
> >  From a cursory glance at the SDK, I'd say...yes!
> >
> > I'm not sure yet if everything we need is there, but it would be
> > considerably easier to bring JRuby up on Android than on Java ME. Most
> > of the packages I expected to be missing are present...so I think
> > there's a good chance it could be made to run.
>
> A simple test: adding jruby-complete.jar onto the dex call in build.xml:
>
>      [exec] ...while processing org/jruby/parser/DefaultRubyParser.class
>      [exec] 1 error; aborting

And copying the entire JRuby source into the Android project.
(Removed BSFExample.java and demo since java.awt and javax.swing did
not exist.):

compile:
    [javac] Compiling 621 source files to
/nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/bin/classes
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:38:
package java.beans does not exist
    [javac] import java.beans.BeanInfo;
    [javac]                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:39:
package java.beans does not exist
    [javac] import java.beans.IntrospectionException;
    [javac]                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:40:
package java.beans does not exist
    [javac] import java.beans.Introspector;
    [javac]                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:41:
package java.beans does not exist
    [javac] import java.beans.PropertyDescriptor;
    [javac]                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/bsf/JRubyEngine.java:64:
cannot access java.beans.PropertyChangeListener
    [javac] class file for java.beans.PropertyChangeListener not found
    [javac] public class JRubyEngine extends BSFEngineImpl {
    [javac]        ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:969:
cannot find symbol
    [javac] symbol  : class BeanInfo
    [javac] location: class org.jruby.javasupport.JavaClass
    [javac]         BeanInfo info;
    [javac]         ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:972:
cannot find symbol
    [javac] symbol  : variable Introspector
    [javac] location: class org.jruby.javasupport.JavaClass
    [javac]             info = Introspector.getBeanInfo(javaClass());
    [javac]                    ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:973:
cannot find symbol
    [javac] symbol  : class IntrospectionException
    [javac] location: class org.jruby.javasupport.JavaClass
    [javac]         } catch (IntrospectionException e) {
    [javac]                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/JavaClass.java:977:
cannot find symbol
    [javac] symbol  : class PropertyDescriptor
    [javac] location: class org.jruby.javasupport.JavaClass
    [javac]         PropertyDescriptor[] descriptors =
info.getPropertyDescriptors();
    [javac]         ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jvyamlb/RepresenterImpl.java:393:
warning: non-varargs call of varargs method with inexact argument type
for last parameter;
    [javac] cast to java.lang.Object for a varargs call
    [javac] cast to java.lang.Object[] for a non-varargs call and to
suppress this warning
    [javac]                             values.put(pname,
ems[i].invoke(data,null));
    [javac]                                                                  ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/bsf/JRubyEngine.java:130:
cannot find symbol
    [javac] symbol  : variable super
    [javac] location: class org.jruby.javasupport.bsf.JRubyEngine
    [javac]         super.initialize(manager, language, someDeclaredBeans);
    [javac]         ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/bsf/JRubyEngine.java:141:
cannot find symbol
    [javac] symbol  : variable this
    [javac] location: class org.jruby.javasupport.bsf.JRubyEngine
    [javac]
runtime.getGlobalVariables().defineReadonly("$bsf", new
FunctionsGlobalVariable(runtime, new BSFFunctions(manager, this)));
    [javac]
                                                                ^
    [javac] /nas/projects/cameron/public/android_sdk_linux_m3-rc20a/JRubyTest/src/org/jruby/javasupport/bsf/JRubyEngine.java:234:
cannot find symbol
    [javac] symbol  : variable super
    [javac] location: class org.jruby.javasupport.bsf.JRubyEngine
    [javac]         super.terminate();
    [javac]         ^
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 12 errors
    [javac] 1 warning

BUILD FAILED

Oh, this was JRuby-1.0.2 in both cases.