MainActivity.java

<?xml version="1.0" encoding="utf-8"?>
<layout 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">

    <data>

        <variable
            name="viewModel"
            type="com.getstream.sdk.chat.viewmodel.ChannelListViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.dialogflowapplication.MainActivity">

        <com.getstream.sdk.chat.view.ChannelListView
            android:id="@+id/channelList"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_marginBottom="10dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:streamReadStateAvatarHeight="15dp"
            app:streamReadStateAvatarWidth="15dp"
            app:streamReadStateTextSize="9sp"
            app:streamShowReadState="true" />

        <ProgressBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:isGone="@{!safeUnbox(viewModel.loading)}"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <ProgressBar
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_marginBottom="16dp"
            app:isGone="@{!safeUnbox(viewModel.loadingMore)}"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>