FT8CN/ft8CN/app/src/main/res/layout/clear_cache_dialog_layout.xml

<?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:id="@+id/linearLayout2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/help_dialog_style"
    android:minWidth="300dp"
    android:minHeight="200dp">

    <ImageView
        android:id="@+id/image"
        android:layout_width="48dp"
        android:layout_height="48dp"
        android:background="@drawable/icon_background_style"
        android:contentDescription="@string/help"
        android:visibility="visible"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ft8cn_icon" />


    <ImageView
        android:id="@+id/scrollDownImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="4dp"
        android:contentDescription="@string/help"
        app:layout_constraintBottom_toBottomOf="@+id/helpScrollView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:srcCompat="@drawable/ic_baseline_keyboard_arrow_down_24"
        tools:visibility="invisible" />

    <ScrollView
        android:id="@+id/helpScrollView"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginTop="16dp"
        app:layout_constraintBottom_toTopOf="@+id/clearCacheButton"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/image"
        app:layout_constraintVertical_bias="0.0">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

            <TextView
                android:id="@+id/cacheHelpMessage"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginStart="20dp"
                android:layout_marginTop="10dp"
                android:layout_marginEnd="20dp"
                android:gravity="start"
                android:lineSpacingExtra="3dp"
                android:lineSpacingMultiplier="1.2"
                android:textColor="@color/help_dialog_text_color"
                android:textSize="14sp"
                tools:text="提示消息提示" />
        </LinearLayout>
    </ScrollView>

    <ImageView
        android:id="@+id/scrollUpImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:contentDescription="@string/help"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/helpScrollView"
        app:srcCompat="@drawable/ic_baseline_keyboard_arrow_up_24"
        tools:visibility="invisible" />

    <TextView
        android:id="@+id/appNameTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/help_dialog_text_color"
        android:textSize="18sp"
        app:layout_constraintBottom_toBottomOf="@+id/image"
        app:layout_constraintEnd_toStartOf="@+id/image"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/image"
        tools:text="FT8CN" />

    <TextView
        android:id="@+id/buildVersionTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/help_dialog_text_color"
        android:textSize="16sp"
        app:layout_constraintBottom_toBottomOf="@+id/image"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@+id/image"
        app:layout_constraintTop_toTopOf="@+id/image"
        tools:text="0.61(Beta 5)" />

    <Button
        android:id="@+id/clearCacheButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/cache_clear"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/cancelClearButton"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/cancelClearButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/cancel_clear_cache"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/clearCacheButton" />

</androidx.constraintlayout.widget.ConstraintLayout>