overte-JulianGro/android/app/src/main/res/layout/user_item.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="56dp"
    android:background="?attr/selectableItemBackground"
    android:clickable="true">

    <ImageView
        android:id="@+id/userImage"
        android:layout_width="40dp"
        android:layout_height="40dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginStart="@dimen/activity_horizontal_margin"
        app:layout_constraintStart_toStartOf="parent"/>
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginStart="@dimen/activity_horizontal_margin"
        app:layout_constraintStart_toEndOf="@id/userImage"
        android:orientation="vertical">
        <TextView
            android:id="@+id/userName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/userOnline"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>

</android.support.constraint.ConstraintLayout>