legado/app/src/main/res/layout/activity_import_book.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:layout_width="match_parent"
    android:layout_height="match_parent">

    <io.legado.app.ui.widget.TitleBar
        android:id="@+id/titleBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:contentInsetStartWithNavigation="0dp"
        app:contentLayout="@layout/view_search" />
 
    <!--path-->
    <LinearLayout
        android:id="@+id/lay_top"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:minHeight="36dp"
        android:orientation="horizontal"
        android:paddingHorizontal="16dp"
        app:layout_constraintTop_toBottomOf="@id/titleBar">

        <TextView
            android:id="@+id/tv_path"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:focusable="true"
            android:gravity="center_vertical"
            android:singleLine="true"
            android:textSize="14sp"
            tools:text="/" />

        <com.google.android.material.button.MaterialButton
            android:id="@+id/tv_go_back"
            android:layout_width="36dp"
            android:layout_height="36dp"
            style="@style/Widget.Material3Expressive.Button.IconButton.Tonal"
            app:icon="@drawable/ic_return"
            app:iconGravity="textStart"
            tools:ignore="UnusedAttribute" />
    </LinearLayout>

    <com.google.android.material.progressindicator.LinearProgressIndicator
        android:id="@+id/refresh_progress_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:visibility="gone"
        android:indeterminate="true"
        app:layout_constraintTop_toBottomOf="@id/lay_top" />

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        app:layout_constraintBottom_toTopOf="@id/select_action_bar"
        app:layout_constraintTop_toBottomOf="@id/refresh_progress_bar">

        <io.legado.app.ui.widget.recycler.scroller.FastScrollRecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:ignore="SpeakableTextPresentCheck" />

        <TextView
            android:id="@+id/tv_empty_msg"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_margin="16dp"
            android:gravity="center"
            android:text="@string/empty"
            android:visibility="gone"
            tools:text="TextView" />

    </FrameLayout>

    <io.legado.app.ui.widget.SelectActionBar
        android:id="@+id/select_action_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>