XklLocal/app/src/main/res/layout/fragment_course_total_test.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">

    <data>

    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/white"
        tools:context=".module.m_center_learn.coursechildren.CourseTotalTestFragment">

        <ImageView
            android:id="@+id/iv_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/boy_1"
            app:layout_constraintBottom_toTopOf="@+id/tv_title"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.2"
            app:layout_constraintVertical_chainStyle="packed" />

        <TextView
            android:id="@+id/tv_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/test_total_after_tip_1"
            android:textColor="@color/main_text_color"
            android:textSize="@dimen/normalSize"
            android:textStyle="bold"
            app:layout_constraintBottom_toTopOf="@+id/tv_main_tip"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/iv_icon"
            android:visibility="visible" />


        <TextView
            android:id="@+id/tv_main_tip"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="12dp"
            android:text="@string/test_total_before_title"
            android:textColor="@color/main_text_color"
            android:textSize="@dimen/normalSize"
            app:layout_constraintBottom_toTopOf="@+id/tv_tips"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tv_title"
            android:visibility="gone"
            tools:visibility="visible"/>

        <TextView
            android:id="@+id/tv_tips"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="4dp"
            android:text="@string/test_total_after_tip_3"
            android:textColor="@color/gray_2"
            android:textSize="@dimen/smallSize"
            app:layout_constraintBottom_toTopOf="@+id/tv_count_tip"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tv_main_tip"
            android:visibility="gone"
            tools:visibility="visible"/>

        <TextView
            android:id="@+id/tv_count_tip"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="4dp"
            android:textColor="@color/theme_color"
            android:textSize="@dimen/smallSize"
            app:layout_constraintBottom_toTopOf="@+id/button_2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tv_tips"
            tools:text="@string/test_count_time_format" />

        <Button
            android:id="@+id/button_1"
            style="@style/Widget.MaterialComponents.Button.UnelevatedButton"
            android:layout_width="0dp"
            android:layout_height="@dimen/common_button_height"
            android:layout_marginStart="@dimen/global_spacing"
            android:insetTop="0dp"
            android:insetBottom="0dp"
            app:cornerRadius="8dp"
            android:textColor="@color/theme_color"
            android:textSize="@dimen/smallSize"
            app:layout_constraintEnd_toStartOf="@+id/button_2"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/button_2"
            app:strokeColor="@color/theme_color"
            app:strokeWidth="@dimen/line_height"
            android:visibility="gone"
            tools:visibility="visible"/>

        <Button
            android:id="@+id/button_2"
            style="@style/common_button_style"
            android:layout_width="0dp"
            android:layout_height="@dimen/common_button_height"
            android:layout_marginStart="12dp"
            android:layout_marginTop="40dp"
            android:layout_marginEnd="@dimen/global_spacing"
            app:cornerRadius="8dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@+id/button_1"
            app:layout_constraintTop_toBottomOf="@+id/tv_count_tip"
            app:layout_goneMarginStart="@dimen/global_spacing" />

        <TextView
            android:id="@+id/tv_clear_learn_record"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="24dp"
            android:text="@string/clear_learn_record"
            android:textColor="@color/gray_2"
            android:textSize="@dimen/smallSize"
            android:visibility="gone"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/button_2"
            tools:visibility="visible"/>
    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>