zumo_2.0_android/app/src/main/res/layout/event_notice_view.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"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content">

  <View
    android:id="@+id/rectangle"
    android:layout_width="2dp"
    android:layout_height="2dp"
    android:layout_marginTop="12dp"
    android:background="@color/C666666"
    app:layout_constraintEnd_toStartOf="@+id/tex_view_contents"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"/>

  <TextView
    android:id="@+id/tex_view_contents"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginStart="5dp"
    android:lineSpacingExtra="4sp"
    android:paddingTop="5dp"
    android:paddingBottom="5dp"
    android:textColor="@color/C666666"
    android:textSize="12sp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toEndOf="@+id/rectangle"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintVertical_bias="0"
    tools:text="해당 이벤트는 ID당 1회에 한해 참여\n가능합니다."/>
</android.support.constraint.ConstraintLayout>