Add External Jar file in cordova 3.4.0 application

I am creating two custom plugins for android use this plugin described in my plugin.xml. My plugin.xml file like ``` <?xml version="1.0" encoding="UTF-8"?> <plugin xmlns="http://apache.org/cordova/ns/plugins/1.0" xmlns:android="http://schemas.android.com/apk/res/android" id="com.my.mybiometric" version="1.2"> <name>myBiometric</name> <description>myBiometric Plugin</description> <license>Apache 2.0</license> <keywords>media,upload</keywords> <engines> <engine name="cordova-android" version=">=3.4.0" /> </engines> <js-module src="www/js/Media2.js" name="Media2"> <clobbers target="mediaRec.startRecord" /> </js-module> <js-module src="www/js/VoiceUpload.js" name="VoiceUpload"> <clobbers target="VoiceUpload" /> </js-module> <!-- android --> <platform name="android"> <config-file target="res/xml/config.xml" parent="/*"> <feature name="Media2"> <param name="android-package" value="com.my.mybiometric.AudioHandler"/> </feature> <feature name="VoiceUpload"> <param name="android-package" value="com.my.mybiometric.UploadHandler"/> </feature> </config-file> <config-file target="AndroidManifest.xml" parent="/manifest/application"> <activity android:name="com.my.mybiometric.myBiometric" android:label="@string/app_name" android:screenOrientation="portrait" android:configChanges="orientation|screenSize|keyboardHidden"> </activity> </config-file> <source-file src="platforms/android/src/com/my/plugins/AudioHandler.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/UploadHandler.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/AppLog.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/MyResponseHandler.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/Recorder.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/VoiceBiometricClient.java" target-dir="src/com/my/mybiometric" /> <source-file src="platforms/android/src/com/my/plugins/VoiceBiometricClientUsage.java" target-dir="src/com/my/mybiometric" /> </platform> </plugin> ``` after build and run the project the media2 plugin is working fine but when i call the voiceupload plugin its return the "class not found" error for voice upload i am using "android-async-http-1.4.4.jar". I add the jar file into libs folder i added manually. How to fix this issue?