How to use: RecyclerViewItem.xml
<com.example.smoothcardanimation.ExpandableLinearLayout
android:id="@+id/expandableView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:expandDuration="500">
//add your after expand design here
</com.example.smoothcardanimation.ExpandableLinearLayout>