How to remove default cardview border from the layout.xml

android xml android-layout uiview android-xml

Set app:cardElevation="0dp" for CardView widget.

android xml android-layout uiview android-xml

Try adding this to your cardView

card_view:cardPreventCornerOverlap="false"

android xml android-layout uiview android-xml

card_view:cardPreventCornerOverlap="false"

or using java:

cardView.setPreventCornerOverlap(false)

You can read all about it here.

CodeHunter