CardView之间的空间

Question

I need to add space between CardView .

I tried to use the card_view:cardUseCompatPadding and it doesn't work. Any help?

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.CardView
        android:id="@+id/all_restaurant_card_view"
        android:layout_width="wrap_content"
        android:layout_height="120dp"

        xmlns:card_view="http://schemas.android.com/apk/res-auto"
        card_view:cardPreventCornerOverlap="true"
        card_view:cardUseCompatPadding="true">

Answer 1

android:layout_marginBottom="4dp"  //4dp is recommended

Answer 2

I try bellow code.

<android.support.v7.widget.CardView
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:layout_marginBottom="4dp"

    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    card_view:cardPreventCornerOverlap="true"
    card_view:cardUseCompatPadding="true"
    card_view:cardCornerRadius="50dp"
>

1. whatever value set in layout_marginBottom , android always have a little space between 2 cardviews. I think layout_marginBottom doen't affect the size of space.
2. card_view:cardUseCompatPadding should set to true.
3. card_view:cardPreventCornerOverlap should set to true to affect card_view:cardCornerRadius , and different value of cardCornerRadius cause different space between 2 cardviews.