Phonegap 3 Plugin causing build error or plugin not initialized

Let me start with some context. I have a Java file and a .jar library that contains an Android project with an Activity, its layout, and another jar library. Of course, I also have a javascript interface for my plugin. In other words, this is what I have:

plugins/com.phonegap.example.activity.plugin/www/myplugin.js
plugins/com.phonegap.example.activity.plugin/src/android/MyPlugin.java
plugins/com.phonegap.example.activity.plugin/src/android/libs/myJar.jar
plugins/plugin.xml

My plugin should execute the method in my MyPlugin.java file, which should then launch the Activity located in myJar.jar file. The .xml plugin for this plugin reads:

<?xml version="1.0" encoding="UTF-8"?>

<plugin xmlns="http://www.phonegap.com/ns/plugins/1.0"
       id="com.phonegap.example.activity.plugin"
  version="0.1.0">
<name>MyPlugin</name>
<description>Launch an Android Activity from PhoneGap 3</description>
<author>Author</author>
<license>MIT</license>
<keywords>phonegap,activity</keywords>

<js-module src="www/myplugin.js" name="MyPlugin">
        <clobbers target="window.MyPlugin" />
</js-module>

<!-- android -->
<platform name="android">
    <config-file target="res/xml/config.xml" parent="/*">
        <feature name="MyPlugin">
            <param name="android-package" value="com.phonegap.example.activity.plugin"/>
        </feature>
    </config-file>
    <config-file target="AndroidManifest.xml" parent="/*">
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
        <activity 
            android:name="com.phonegap.example.activity.ExampleActivity" 
            android:label="@string/app_name">
                <intent-filter>
                    <action android:name="com.phonegap.example.action.EXAMPLE" />
                </intent-filter>
        </activity>
    </config-file>
    <source-file src="src/android/MyPlugin.java" target-dir="src/com/phonegap/example/activity" />
    <source-file src="src/android/libs/myJar.jar" target-dir="libs" />
 </platform>          
</plugin>

I installed Phonegap 3.3 and Cordova 3.4 using npm install, and I have Ruby 2.0.0 installed. I run it all on Mac OS X.

To the problem:

• I am creating a phonegap application to test this plugin ( phonegap create TestApp)
• I add the Android platform ( cordova platform add android)
• phonegap local plugin add /path/to/plugin/folder

• phonegap build android, :

  [error] Android. "ant debug -f" /path/to/TestApp/platforms/android/build.xml "": /path/to/ ant/build.xml:720: : /path/to/ ant/build.xml:734: ; . .

  : 4

, . , , plugins/android.json.

- ( , ). , , , var p = window.MyPlugin www/js/index.js, app.receivedEvent('deviceready'); onDeviceReady. console.log(p);, undefined, / .

, , Java Android, . ? ? ? / .

====== =====

cordova build android -d, , :

[javac] /path/to/TestApp/platforms/android/src/com/phonegap/example/MyPlugin.java:10: 
    error: package com.phonegap.example.activity does not exist
[javac] import com.phonegap.example.activity.ExampleActivity;

com.phonegap.example.activity myJar.jar, , MyPlugin.java myJar.jar. , plugin.xml jar . plugin.xml:

 <source-file src="src/android/libs/myJar.jar" target-dir="libs" />

, ?