android CoordinatorLayout use

Sliding up when the head hidden

  <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/appWhite">

        <com.google.android.material.appbar.AppBarLayout
            android:id="@+id/appBar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@android:style/ThemeOverlay.Material.ActionBar">

            <com.google.android.material.appbar.CollapsingToolbarLayout
                android:id="@+id/ctlToolBar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                app:contentScrim="@color/appWhite"
                app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
                app:statusBarScrim="@android:color/transparent"
                app:titleEnabled="false">

                <RelativeLayout
                    android:id="@+id/rlMap"
                    android:layout_width="match_parent"
                    android:layout_height="@dimen/qb_px_250"
                    android:background="@color/appWhite">

                    <com.amap.api.maps.TextureMapView
                        android:id="@+id/mvMapView"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/qb_px_250"
                        android:background="@android:color/white" />

                    <ImageView
                        android:id="@+id/ivLocation"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_alignParentBottom="true"
                        android:layout_marginLeft="@dimen/qb_px_8"
                        android:layout_marginBottom="@dimen/qb_px_8"
                        android:src="@mipmap/location_back" />

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

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
    </androidx.coordinatorlayout.widget.CoordinatorLayout>