Android CardView example

android.support.v7.widget.CardView is a FrameLayout with a rounded corner background and shadow.

Before use CardView in your app, you have to "Add Support Libraries of RecyclerView, CardView to Android Studio Project".

Example of using CardView in layout xml.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />
    <android.support.v7.widget.CardView
        android:id="@+id/cardview1"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="28sp"
            android:text="CardView 1"/>
    </android.support.v7.widget.CardView>

    <android.support.v7.widget.CardView
        android:id="@+id/cardview2"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        >
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textSize="28sp"
            android:textColor="#ffa31f15"
            android:text="CardView 2"/>
    </android.support.v7.widget.CardView>

    <android.support.v7.widget.CardView
        android:id="@+id/cardview3"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        card_view:cardCornerRadius="20sp"
        card_view:cardBackgroundColor="#ffff0000"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="35sp"
            android:textColor="#ffffffff"
            android:text="CardView 3"/>
    </android.support.v7.widget.CardView>

    <android.support.v7.widget.CardView
        android:id="@+id/cardview4"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        card_view:cardCornerRadius="20sp"
        card_view:cardElevation="5sp"
        card_view:cardBackgroundColor="#ff0000ff"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="35sp"
            android:textColor="#ffffffff"
            android:text="CardView 4"/>
    </android.support.v7.widget.CardView>

    <android.support.v7.widget.CardView
        android:id="@+id/cardview5"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        card_view:cardCornerRadius="20sp"
        card_view:cardElevation="5sp"
        card_view:cardBackgroundColor="#ffffffff"
        >
        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textSize="35sp"
            android:textColor="#ff505050"
            android:text="CardView 5"/>
    </android.support.v7.widget.CardView>

</LinearLayout>

Tested on Nexus 7 running Android 5.1.1:

Related:
- Android example using RecyclerView with CardView