Cardview is all goes into one card

I have made and app with CardView, but my cardview is going into one card.

My Code:

recyclerview_activity.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:padding="16dp"
    >

    <android.support.v7.widget.RecyclerView
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:id="@+id/rv"
        >

    </android.support.v7.widget.RecyclerView>


</LinearLayout>

I get something like this

I think the only issue is with the gap between your CardViews. You must not be having CompatPadding true in CardView thats why it looks like the data is clubbed into one CardView try making it true. Use following code it should work :

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/cv"
    card_view:cardCornerRadius="5dp"
    card_view:cardUseCompatPadding="true"
    android:foreground="?android:attr/selectableItemBackground"
>

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="16dp"
    >

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/person_photo"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="16dp"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/person_name"
        android:layout_toRightOf="@+id/person_photo"
        android:layout_alignParentTop="true"
        android:textSize="30sp"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/person_age"
        android:layout_toRightOf="@+id/person_photo"
        android:layout_below="@+id/person_name"
        />

</RelativeLayout>

</android.support.v7.widget.CardView>