View Binding not work with "Include": incompatible types: ProgressBarLayoutBinding cannot be converted to ViewDataBinding

I found solution.If outer xml is data binding xml, then inner xml also must be data binding.So progress_bar_layout.xml must be like this:

<?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">    <androidx.constraintlayout.widget.ConstraintLayout        android:id="@+id/containerProgressBarLayout"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:background="#66545a5a"        android:clickable="true"        android:elevation="2dp"        android:focusable="true">        <ProgressBar            android:id="@+id/progressBar"            style="?android:attr/progressBarStyle"            android:layout_width="@dimen/min_height"            android:layout_height="@dimen/min_height"            android:indeterminateTint="@color/colorPrimary"            app:layout_constraintBottom_toBottomOf="parent"            app:layout_constraintEnd_toEndOf="parent"            app:layout_constraintStart_toStartOf="parent"            app:layout_constraintTop_toTopOf="parent" />    </androidx.constraintlayout.widget.ConstraintLayout></layout>

In progress_bar_layout use below line (m also not sure it works for you or not because I didn't try yet but if it works then I will add more clarification)

Maybe this error is for combining view binding and data binding. View binding doesn't support layout variables

<androidx.constraintlayout.widget.ConstraintLayout    ...    tools:viewBindingIgnore="true" >...</androidx.constraintlayout.widget.ConstraintLayout>

In addition of the existing answers. If your layout uses layout (data-binding) tag as parent, then you have to wrap your include's layout inside layout (data-binding) tag. Below are the source code.

include's Layout

<layout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:app="http://schemas.android.com/apk/res-auto">    <matrixsystems.core.widgets.CustomToolbar        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:background="@color/app_white"        android:fitsSystemWindows="true"        android:minHeight="?attr/actionBarSize"        app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" /></layout>

Layout

<include        android:id="@+id/toolbar"        layout="@layout/toolbar_app" />

Activity

override fun onCreate(savedInstanceState: Bundle?) {    // getting toolbar from binding    setSupportActionBar(binding.toolbar.root as Toolbar)}