<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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="match_parent"
    android:layout_height="match_parent"
    tools:context=".activities.poc.SpaceActivity">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:id="@+id/topBarTv"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageView
            android:id="@+id/backIv"
            android:layout_width="24dp"
            android:layout_height="24dp"
            android:layout_marginStart="16dp"
            android:contentDescription="back"
            android:src="@drawable/ic_round_arrow_back_24"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/titleTv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="现场勘测描绘"
            android:textColor="@color/black_272727"
            android:textSize="18sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>

    <ExpandableListView
        android:id="@+id/expandLv"
        android:layout_width="0dp"
        android:layout_height="0dp"

        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/topBarTv" />
</androidx.constraintlayout.widget.ConstraintLayout>