gistfile1.java

    private static Object ruby;

            Log.d(TAG, "Setting up JRuby runtime");
            System.setProperty("jruby.bytecode.version", "1.5");
            System.setProperty("jruby.interfaces.useProxy", "true");
            System.setProperty("jruby.management.enabled", "false");

            String packagePath = "org.ruboto.core";
            String apkName = null;
            try {
                apkName = appContext.getPackageManager().getApplicationInfo(packagePath,0).sourceDir;
            } catch (PackageManager.NameNotFoundException e) {
                // FIXME(uwe):  Ask the user to install the platform APK and stop or restart this app.
            	throw new RuntimeException("APK " + packagePath + " not found.");
            }

            System.out.println("apkName: " + apkName);
            PathClassLoader pathClassLoader = new PathClassLoader(apkName, ClassLoader.getSystemClassLoader());

            try {
                Class<?> scriptingContainerClass = Class.forName("org.jruby.embed.ScriptingContainer", true, pathClassLoader);
                System.out.println("scriptingContainerClass: " + scriptingContainerClass);
    		    ruby = scriptingContainerClass.getConstructor().newInstance();
                System.out.println("scriptingContainer: " + ruby);
                Class<?> compileModeClass = Class.forName("org.jruby.RubyInstanceConfig.CompileMode", true, pathClassLoader);
                System.out.println("compileModeClass: " + compileModeClass);
    		    Method setCompileModeMethod = ruby.getClass().getMethod("setCompileMode", compileModeClass);
    		    Object compileModenumValue = compileModeClass.getEnumConstants()[2];
                System.out.println("compileModenumValue: " + compileModenumValue);
                setCompileModeMethod.invoke(ruby, compileModenumValue);
    		    Method setClassLoaderMethod = ruby.getClass().getMethod("setClassLoader");
                setClassLoaderMethod.invoke(ruby, pathClassLoader);
                Thread.currentThread().setContextClassLoader(pathClassLoader);
		        if (scriptsDir != null) {
                    Log.d(TAG, "Setting JRuby current directory to " + scriptsDir);
        		    Method setCurrentDirectoryMethod = ruby.getClass().getMethod("setCurrentDirectory", String.class);
					setCurrentDirectoryMethod.invoke(ruby, scriptsDir);
				}
				if (out != null) {
        		    Method setOutputMethod = ruby.getClass().getMethod("setOutput");
        		    setOutputMethod.invoke(ruby, out);
        		    Method setErrorMethod = ruby.getClass().getMethod("setError");
        		    setErrorMethod.invoke(ruby, out);
				}
			} catch (ClassNotFoundException e) {
				// FIXME(uwe): ScriptingContainer not found in the platofrm
				// APK...
			} catch (IllegalArgumentException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (SecurityException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InstantiationException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (NoSuchMethodException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}


                        // The following code fails

    	        try {
			ruby.getClass().getMethod("put", String.class, Object.class).invoke(ruby, name, object);
		} catch (IllegalArgumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SecurityException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}