Фон выбранного элемента MvxRecycleView

Как установить фон выбранного элемента в MvxRecycleView?

Я хочу изменить фон выбранного элемента, а другой.

selector_category_item.xml

<?xml version = "1.0" encoding = "utf-8"?>
<selector xmlns:android = "http://schemas.android.com/apk/res/android">
    <item  android:state_pressed = "true"  android:state_enabled = "true"  >
        <shape android:shape = "rectangle">
            <solid android:color = "@color/colorPrimary"/>
        </shape>
            </item>

    <item android:state_checked = "false" android:state_enabled = "true"  >
        <shape android:shape = "rectangle">
            <solid android:color = "@color/grayBackground"/>
        </shape>
    </item>
</selector>

Мой MvxRecycleView

<MvxRecyclerView
            android:overScrollMode = "never"
            android:scrollbars = "vertical"
            android:background = "#e2e2e2"
            android:layout_width = "0dp"
            android:layout_height = "match_parent"
            android:layout_weight = "1"
            local:MvxItemTemplate = "@layout/category_item"
            local:MvxBind = "ItemsSource Categories; ItemClick SelectCategoryCommand; SelectedItem SelectedCategory"
            android:id = "@+id/categoryRecyclerView" />

И category_item.xml

<?xml version = "1.0" encoding = "utf-8"?>
<LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android"
    xmlns:local = "http://schemas.android.com/apk/res-auto"
    android:layout_width = "match_parent"
    android:layout_height = "wrap_content"
    android:padding = "16dp"
    android:clickable = "true"
    android:background = "@drawable/selector_category_item"
    android:layout_marginBottom = "1dp"
    android:orientation = "vertical">
    <RelativeLayout
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content">
        <ffimageloading.cross.MvxCachedImageView
            android:id = "@+id/categoryImage"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            local:MvxBind = "DrawableName CategoryImage" />
        <ImageView
            android:id = "@+id/favIcon"
            android:layout_width = "wrap_content"
            android:layout_height = "wrap_content"
            android:layout_centerVertical = "true"
            android:layout_alignParentEnd = "true"
            android:src = "@drawable/no_fav_icon" />
    </RelativeLayout>
    <TextView
        android:clickable = "true"
    android:focusableInTouchMode = "true"
    android:focusable = "true"
        android:layout_marginTop = "8dp"
        android:id = "@+id/categoryText"
        style = "@style/TextStyleBlack"
        android:fontFamily = "@font/roboto_regular"
        android:letterSpacing = "-0.04"
        android:lineSpacingExtra = "0sp"
        android:layout_width = "match_parent"
        android:layout_height = "wrap_content"
        local:MvxBind = "Text Name"
        android:textSize = "14sp" />
</LinearLayout>

Мне нужно изменить фон выбранного элемента на другой, пока элемент выбран. Как я могу разобраться?