布局实现方案:
<android.support.constraint.ConstraintLayout
android:id="@+id/rl_username"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<TextView
android:id="@+id/tv_user_name"
android:textStyle="bold"
android:textColor="@color/res_color_C5"
android:textSize="@dimen/textSize_18"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="@dimen/dp_3"
android:ellipsize="end"
android:lines="1"
android:maxLines="1"
android:singleLine="true"
android:text="User Nick Name User Nick Name User Nick Name"
app:layout_constraintEnd_toStartOf="@+id/tv_user_level"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintHorizontal_chainStyle="packed"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintWidth_default="wrap" />
<TextView
android:id="@+id/tv_user_level"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/xxxx"
android:gravity="center"
android:paddingLeft="9dp"
android:paddingRight="9dp"
android:text="LV9"
android:textColor="@color/res_color_C3"
android:textSize="@dimen/textSize_14"
android:layout_marginRight="@dimen/dp_5"
app:layout_constraintBottom_toTopOf="@id/tv_user_name"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@id/tv_user_name"
app:layout_constraintTop_toBottomOf="@id/tv_user_name" />
</android.support.constraint.ConstraintLayout>