Unable to find class error

[senthilsivanath]

Compiling from Android Studio, am getting following run time exception.

I have added the following line in build.gradle

compile files('libs/devsmartlib.jar')

06-09 02:31:11.652    3923-3923/?                              E/dalvikvm: Could not find class 'com.devsmart.android.ui.HorizontalListView', referenced from method com.example.railalarm.MainActivity.onCreate
06-09 02:31:11.692    3923-3923/?                              E/AndroidRuntime: FATAL EXCEPTION: main
        java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.railalarm/com.example.railalarm.MainActivity}: android.view.InflateException: Binary XML file line #76: Error inflating class com.devsmart.android.ui.HorizontalListView