RetroMusicPlayer/app/src/main/res/layout/activity_donation.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/appBarLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="0dp"
        app:elevation="0dp">

        <com.google.android.material.appbar.CollapsingToolbarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:titleEnabled="false">

            <com.google.android.material.appbar.MaterialToolbar
                android:id="@+id/toolbar"
                style="@style/Toolbar"
                app:layout_collapseMode="pin"
                app:title="@string/support_development"
                tools:ignore="UnusedAttribute" />

        </com.google.android.material.appbar.CollapsingToolbarLayout>

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="?dividerColor" />
    </com.google.android.material.appbar.AppBarLayout>

    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">

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

            <com.google.android.material.textview.MaterialTextView
                android:id="@+id/donation"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:padding="16dp"
                android:text="@string/donation_header"
                android:textAppearance="@style/TextViewSubtitle2"
                android:textColor="?attr/colorAccent" />

            <LinearLayout
                android:id="@+id/progressContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:orientation="vertical"
                android:padding="12dp">

                <ProgressBar
                    android:id="@+id/progress"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:indeterminate="true" />

                <com.google.android.material.textview.MaterialTextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:gravity="start"
                    android:paddingLeft="16dp"
                    android:text="@string/loading_products"
                    android:textAppearance="@style/TextViewCaption"
                    tools:ignore="RtlHardcoded,RtlSymmetry" />

            </LinearLayout>

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/recyclerView"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingStart="6dp"
                android:paddingEnd="6dp"
                android:scrollbarStyle="outsideOverlay" />

        </LinearLayout>
    </androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>