Couldn't run the sample code

[4tis]

I'm getting the next Error -

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.tjerkw.slideexpandable.sample/com.tjerkw.slideexpandable.sample.ExampleActivity}: java.lang.ClassNotFoundException: Didn't find class "com.tjerkw.slideexpandable.sample.ExampleActivity" on path: /data/app/com.tjerkw.slideexpandable.sample-1.apk

[TheAnimatrix]

You have to import the library too , after you've done it then goto project properties of library and check if it is marked as "is library" and now goto the example activity and goto its properties and add the library . :D