AndroidAPS/app/src/main/res/layout/overview_notification_item.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:id="@+id/notification_cardview"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_margin="1dp"
    card_view:cardBackgroundColor="@color/cardColorBackground"
    card_view:cardCornerRadius="6dp">

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

        <Button
            android:id="@+id/notification_dismiss"
            android:layout_width="wrap_content"
            android:layout_height="35dp"
            android:layout_weight="0.2"
            android:text="@string/dismiss" />

        <TextView
            android:id="@+id/notification_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="Notification text" />

        <TextView
            android:id="@+id/notification_time"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="0.1"
            android:text="Time" />
    </LinearLayout>

</androidx.cardview.widget.CardView>