XklLocal/app/src/main/res/layout/inc_learn_title.xml

<?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"
    tools:showIn="@layout/activity_learn_exam">

    <data>
        <import type="android.view.View"/>
        <variable
            name="showProgress"
            type="Boolean" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="0dp"
        android:layout_height="@dimen/title_bar_height"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <ImageView
            android:id="@+id/img_back"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_centerVertical="true"
            android:paddingStart="@dimen/global_spacing"
            android:scaleType="centerInside"
            android:src="@drawable/ic_back"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="70dp"
            android:ellipsize="end"
            android:maxLines="1"
            tools:text="小学"
            android:gravity="center"
            android:textColor="@color/main_text_color"
            android:textSize="@dimen/bigSize"
            android:textStyle="bold"
            app:layout_constrainedWidth="true"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@+id/tv_num_progress"
            app:layout_constraintHorizontal_chainStyle="packed"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_goneMarginEnd="70dp" />

        <TextView
            android:id="@+id/tv_num_progress"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="2dp"
            android:layout_marginEnd="70dp"
            tools:text="90/100"
            android:textColor="@color/main_text_color"
            android:textSize="@dimen/normalSize"
            android:textStyle="bold"
            android:visibility="@{showProgress?View.VISIBLE:View.GONE}"
            app:layout_constrainedWidth="true"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/tv_title"
            app:layout_constraintTop_toTopOf="parent"
            tools:visibility="gone"/>


        <com.xkl.cdl.widget.VoiceSwitch
            android:id="@+id/voice_switch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:visibility="visible"
            android:layout_marginEnd="@dimen/global_spacing"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>