Android 4.4 remove shadow from CardView

Question

I tried to remove the shadow from the Cardview.
I used android support v7 Cardview on android v4.4.2

My layout look:

Answer 1

Just add below code to cardview tag

app:cardElevation="0dp"

and don't forget to add

xmlns:app="http://schemas.android.com/apk/res-auto"

UPDATE

Also try this put below codes in cardview

app:cardElevation="0dp"
app:cardMaxElevation="0dp"
app:cardCornerRadius="1dp"
app:cardUseCompatPadding="true"
app:cardPreventCornerOverlap="false"
android:background="@null"

The app:cardCornerRadius should be bigger than 0(>0) otherwise throw exception

I'm using API 28 support library

implementation 'com.android.support:cardview-v7:28.0.0'