2021 4 7

<?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"
    android:background="@drawable/side_nav_bar"
    android:orientation="vertical">
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/linear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        tools:ignore="MissingConstraints">
    </LinearLayout>
    </ScrollView>
        <ProgressBar
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:id="@+id/progress"
            android:visibility="gone"
            ></ProgressBar>
    </FrameLayout>
    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/open"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="82dp"
        android:layout_marginEnd="32dp"
        android:clickable="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0"
        app:srcCompat="@android:drawable/ic_input_add"
        android:layout_marginRight="32dp" />

</androidx.constraintlayout.widget.ConstraintLayout>