Vista de tarjetas solo radio de esquina superior
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="-5dp" // This is the imp thing
card_view:cardCornerRadius="4dp">
<SomeView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"/>
</android.support.v7.widget.CardView>
Sourav Maurya