when root element of layout_empty is CardView, the swipefreshlayout cannot show

[lazyfatcat]

the emptyview is <?xml version="1.0" encoding="utf-8"?>

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">

<TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="Nothing here."
        android:id="@+id/textView"
        android:layout_centerInParent="true"/>

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