之前布局：
布局修改前：SmartRefreshLayout 嵌套NestedScrollView
布局修改后：SmartRefreshLayout 嵌套CoordinatorLayout

<?xml version="1.0" encoding="utf-8"?>
<com.scwang.smart.refresh.layout.SmartRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:srlEnablePreviewInEditMode="false">
    
    <com.scwang.smart.refresh.header.ClassicsHeader
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <androidx.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">

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

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="11111"
                        android:textColor="@color/black" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="11111"
                        android:textColor="@color/black" />

                </LinearLayout>

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

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

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/rvList"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="bottom"
            app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    </androidx.coordinatorlayout.widget.CoordinatorLayout>

    <com.scwang.smart.refresh.footer.ClassicsFooter
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</com.scwang.smart.refresh.layout.SmartRefreshLayout>

修改后

<?xml version="1.0" encoding="utf-8"?>
<com.scwang.smart.refresh.layout.SmartRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:srlEnablePreviewInEditMode="false">
    
    <com.scwang.smart.refresh.header.ClassicsHeader
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.google.android.material.appbar.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/white"
            app:elevation="0dp">

            <com.google.android.material.appbar.CollapsingToolbarLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:layout_scrollFlags="scroll|exitUntilCollapsed">

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

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="11111"
                        android:textColor="@color/black" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="11111"
                        android:textColor="@color/black" />

                  <androidx.recyclerview.widget.RecyclerView
                      android:id="@+id/rvList"
                      android:layout_width="match_parent"
                      android:layout_height="match_parent"
                      android:layout_gravity="bottom"
                      app:layout_behavior="@string/appbar_scrolling_view_behavior" />

                </LinearLayout>

    </androidx.core.widget.NestedScrollView>

    <com.scwang.smart.refresh.footer.ClassicsFooter
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</com.scwang.smart.refresh.layout.SmartRefreshLayout>