android - Unable to instantiate componentinfo with SlidingMenu Library and SlidingFragmentActivity -


i developing appliation in android slidingmenu library. i've imported project eclipse , i've linked library project papertask. mainactivity extend slidingfragmentactivity extend fragmentactivity. i've added class android manifest when launch app, debugger show exception:

java.lang.runtimeexception: unable instantiate activity componentinfo{com.paper.papertask/com.paper.papertask.activities.mainpaperactivity}:  java.lang.classnotfoundexception: didn't find class "com.paper.papertask.activities.mainpaperactivity"  on path: /data/app/com.paper.papertask-2.apk

the android manifest is:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.paper.papertask"    android:versioncode="1"    android:versionname="1.0" >     <uses-sdk     android:minsdkversion="14"     android:targetsdkversion="17" />     <application     android:allowbackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme" >     <activity         android:name="com.paper.papertask.activities.mainpaperactivity"         android:label="@string/app_name" >         <intent-filter>             <action android:name="android.intent.action.main" />             <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>    </application> </manifest>

the routes of class correct, reason not found class. image of archive of project

can 1 know why doesn't find class? thanks!


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