open-keychain/OpenKeychain/src/main/res/layout/view_key_fragment.xml

<ScrollView 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="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:paddingTop="16dp"
        android:paddingBottom="16dp"
        android:paddingLeft="16dp"
        android:paddingRight="16dp">

        <android.support.v7.widget.CardView
            android:id="@+id/card_identities"
            android:layout_gravity="center"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            card_view:cardBackgroundColor="@android:color/white"
            card_view:cardElevation="2dp"
            card_view:cardUseCompatPadding="true"
            card_view:cardCornerRadius="4dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <TextView
                    style="@style/CardViewHeader"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/section_user_ids" />

                <org.sufficientlysecure.keychain.ui.widget.FixedListView
                    android:id="@+id/view_key_user_ids"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginBottom="4dp" />
            </LinearLayout>
        </android.support.v7.widget.CardView>

        <android.support.v7.widget.CardView
            android:id="@+id/card_linked_ids"
            android:transitionName="card_linked_ids"
            android:layout_gravity="center"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            card_view:cardBackgroundColor="@android:color/white"
            card_view:cardElevation="2dp"
            card_view:cardUseCompatPadding="true"
            card_view:cardCornerRadius="4dp">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:animateLayoutChanges="true">

                <TextView
                    style="@style/CardViewHeader"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="@string/section_linked_identities" />

                <org.sufficientlysecure.keychain.ui.widget.FixedListView
                    android:id="@+id/view_key_linked_ids"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginBottom="4dp" />

                <TextView
                    android:id="@+id/view_key_linked_ids_expander"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="4dp"
                    android:layout_marginBottom="4dp"
                    android:gravity="center_vertical"
                    android:drawableTop="@drawable/divider"
                    android:drawableRight="@drawable/ic_expand_more_black_24dp"
                    android:drawableEnd="@drawable/ic_expand_more_black_24dp"
                    android:drawablePadding="3dp"
                    android:clickable="true"
                    android:textColor="@color/tertiary_text_light"
                    android:text="%d more unknown identity types"
                    android:paddingLeft="8dp"
                    android:paddingRight="8dp"
                    style="@style/SelectableItem" />

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

    </LinearLayout>

</ScrollView>