constraintlayout_wrap_content_uc.xml

<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="match_parent">

    <TextView
        android:id="@+id/message"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@android:color/white"
        android:layout_margin="16dp"
        android:textSize="12sp"
        android:text="Today is Rami Jemli's birthday. Write a birthday wish on his timeline!"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toLeftOf="@+id/cake"
        app:layout_constraintHorizontal_bias="0"
        app:layout_constrainedWidth="true"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/cake"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_marginTop="16dp"
        android:layout_marginEnd="16dp"
        android:src="@drawable/all_ico_birthday"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>