<?xml version="1.0" encoding="utf-8"?>

 <com.zhy.autolayout.AutoLinearLayout 
    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"
    android:background="@color/color_white"
    android:fitsSystemWindows="true"
    android:orientation="vertical">

    <com.zhy.autolayout.AutoLinearLayout
        android:layout_width="match_parent"
        android:layout_height="@dimen/title_height"
        android:orientation="horizontal">

        <ImageView
            android:layout_width="120px"
            android:layout_height="60px"
            android:layout_gravity="center_vertical"
            android:scaleType="fitCenter"
            android:src="@mipmap/home_icon_my" />

        <com.zhy.autolayout.AutoLinearLayout
            android:id="@+id/ll_search"
            android:layout_width="0px"
            android:layout_height="match_parent"
            android:layout_marginBottom="10px"
            android:layout_marginTop="10px"
            android:layout_weight="1"
            android:background="@drawable/shape_tab_home"
            android:clickable="true"
            android:descendantFocusability="beforeDescendants"
            android:orientation="horizontal">

            <ImageView
                android:layout_width="32px"
                android:layout_height="32px"
                android:layout_gravity="center_vertical"
                android:layout_marginLeft="@dimen/public_spacing_20"
                android:layout_marginRight="@dimen/public_spacing_20"
                android:clickable="false"
                android:src="@mipmap/home_icon_seach" />

            <TextView
                android:id="@+id/et_search"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:layout_marginLeft="@dimen/public_spacing_20"
                android:background="@null"
                android:clickable="false"
                android:focusable="false"
                android:text="请输入你想要查询的商品"
                android:textColor="@color/color_9"
                android:textSize="@dimen/font_text_24px" />
        </com.zhy.autolayout.AutoLinearLayout>

        <com.zhy.autolayout.AutoLinearLayout
            android:id="@+id/ll_kefu"
            android:layout_width="120px"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:orientation="vertical">

            <ImageView
                android:layout_width="32px"
                android:layout_height="32px"
                android:layout_gravity="center_horizontal"
                android:src="@mipmap/home_icon_kf" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="@dimen/margin_10"
                android:text="@string/str_im"
                android:textColor="@color/color_login"
                android:textSize="@dimen/font_text_20px" />
        </com.zhy.autolayout.AutoLinearLayout>

    </com.zhy.autolayout.AutoLinearLayout>

    <com.scwang.smartrefresh.layout.SmartRefreshLayout
        android:id="@+id/refresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <com.zhy.autolayout.AutoRelativeLayout
            android:id="@+id/rl_fragment_home"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.design.widget.CoordinatorLayout
                android:id="@+id/cl_fragment_home"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <android.support.design.widget.AppBarLayout
                    android:id="@+id/app_bar_layout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:theme="@style/AppTheme.AppBarOverlay"
                    app:layout_behavior="com.ydt.moiiee.utils.FlingBehavior">

                    <com.zhy.autolayout.AutoLinearLayout
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:orientation="vertical"
                        app:layout_scrollFlags="scroll">

                        <com.youth.banner.Banner
                            android:id="@+id/banner"
                            android:layout_width="match_parent"
                            android:layout_height="300px"
                            android:background="@color/color_white"
                            android:minHeight="300px"
                            app:indicator_drawable_selected="@drawable/rectangle_gray"
                            app:indicator_drawable_unselected="@drawable/rectangle_write"
                            app:indicator_height="5dp"
                            app:indicator_margin="5dp"
                            app:indicator_width="5dp" />

                        <com.zhy.autolayout.AutoLinearLayout
                            android:layout_width="match_parent"
                            android:layout_height="160px"
                            android:orientation="horizontal">

                            <com.zhy.autolayout.AutoLinearLayout
                                android:id="@+id/ll_home_group_high"
                                android:layout_width="0px"
                                android:layout_height="wrap_content"
                                android:layout_gravity="center_vertical"
                                android:layout_weight="1"
                                android:orientation="vertical">

                                <ImageView
                                    android:id="@+id/iv_home_group_high"
                                    android:layout_width="40px"
                                    android:layout_height="40px"
                                    android:layout_gravity="center_horizontal"
                                    android:src="@mipmap/icon_home_gddz" />

                                <TextView
                                    android:id="@+id/tv_home_group_high"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="@dimen/margin_10"
                                    android:text="@string/str_group_high"
                                    android:textColor="@color/color_22"
                                    android:textSize="@dimen/font_text_24px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <com.zhy.autolayout.AutoLinearLayout
                                android:id="@+id/ll_home_group_custom"
                                android:layout_width="0px"
                                android:layout_height="wrap_content"
                                android:layout_gravity="center_vertical"
                                android:layout_weight="1"
                                android:orientation="vertical">

                                <ImageView
                                    android:id="@+id/iv_home_group_custom"
                                    android:layout_width="40px"
                                    android:layout_height="40px"
                                    android:layout_gravity="center_horizontal"
                                    android:src="@mipmap/home_icon_group_custom" />

                                <TextView
                                    android:id="@+id/tv_home_group_custom"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="@dimen/margin_10"
                                    android:text="@string/str_group_custom"
                                    android:textColor="@color/color_22"
                                    android:textSize="@dimen/font_text_24px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <com.zhy.autolayout.AutoLinearLayout
                                android:id="@+id/btn_measure"
                                android:layout_width="0px"
                                android:layout_height="wrap_content"
                                android:layout_gravity="center_vertical"
                                android:layout_weight="1"
                                android:orientation="vertical">

                                <ImageView
                                    android:layout_width="40px"
                                    android:layout_height="40px"
                                    android:layout_gravity="center_horizontal"
                                    android:src="@mipmap/home_icon_lt" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="@dimen/margin_10"
                                    android:text="@string/str_measurement_free"
                                    android:textColor="@color/color_22"
                                    android:textSize="@dimen/font_text_24px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <com.zhy.autolayout.AutoLinearLayout
                                android:id="@+id/btn_custom"
                                android:layout_width="0px"
                                android:layout_height="wrap_content"
                                android:layout_gravity="center_vertical"
                                android:layout_weight="1"
                                android:orientation="vertical">

                                <ImageView
                                    android:layout_width="40px"
                                    android:layout_height="40px"
                                    android:layout_gravity="center_horizontal"
                                    android:src="@mipmap/home_icon_dz" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="@dimen/margin_10"
                                    android:text="@string/str_customization"
                                    android:textColor="@color/color_22"
                                    android:textSize="@dimen/font_text_24px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <com.zhy.autolayout.AutoLinearLayout
                                android:id="@+id/ll_home_points_shop"
                                android:layout_width="0px"
                                android:layout_height="wrap_content"
                                android:layout_gravity="center_vertical"
                                android:layout_weight="1"
                                android:orientation="vertical"
                                android:visibility="gone">

                                <ImageView
                                    android:id="@+id/iv_home_points"
                                    android:layout_width="40px"
                                    android:layout_height="40px"
                                    android:layout_gravity="center_horizontal"
                                    android:src="@mipmap/home_icon_jf" />

                                <TextView
                                    android:id="@+id/tv_home_points"
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_horizontal"
                                    android:layout_marginTop="@dimen/margin_10"
                                    android:text="@string/str_bonus_points"
                                    android:textColor="@color/color_22"
                                    android:textSize="@dimen/font_text_24px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                        </com.zhy.autolayout.AutoLinearLayout>

                        <View
                            android:layout_width="match_parent"
                            android:layout_height="20px"
                            android:background="@color/color_divider" />

                        <com.zhy.autolayout.AutoRelativeLayout
                            android:layout_width="match_parent"
                            android:layout_height="100px"
                            android:padding="@dimen/margin_20">

                            <com.zhy.autolayout.AutoLinearLayout
                                android:layout_width="wrap_content"
                                android:layout_height="match_parent"
                                android:layout_gravity="center_vertical"
                                android:orientation="horizontal">

                                <View
                                    android:layout_width="@dimen/px8"
                                    android:layout_height="@dimen/px32"
                                    android:layout_gravity="center_vertical"
                                    android:background="@color/color_283" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_vertical"
                                    android:paddingLeft="@dimen/margin_10"
                                    android:text="@string/str_customization_by_brand"
                                    android:textColor="@color/color_283"
                                    android:textSize="@dimen/font_text_30px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <Button
                                android:id="@+id/btn_more"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_alignParentRight="true"
                                android:background="@null"
                                android:drawablePadding="10px"
                                android:drawableRight="@mipmap/home_icon_more"
                                android:text="@string/str_see_more"
                                android:textColor="@color/color_99"
                                android:textSize="@dimen/font_text_30px" />
                        </com.zhy.autolayout.AutoRelativeLayout>

                        <android.support.v4.widget.NestedScrollView
                            android:id="@+id/nsv_fragment_home"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content">

                            <android.support.v7.widget.RecyclerView
                                android:id="@+id/rv_banner"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:background="@color/color_white"
                                android:paddingBottom="40px"
                                android:paddingLeft="@dimen/margin_20"
                                android:paddingRight="@dimen/margin_20" />
                        </android.support.v4.widget.NestedScrollView>

                        <View
                            android:layout_width="match_parent"
                            android:layout_height="20px"
                            android:background="@color/color_divider" />
                        <!-- 高端定制  -->
                        <com.zhy.autolayout.AutoRelativeLayout
                            android:layout_width="match_parent"
                            android:layout_height="100px"
                            android:padding="@dimen/margin_20">

                            <com.zhy.autolayout.AutoLinearLayout
                                android:layout_width="wrap_content"
                                android:layout_height="match_parent"
                                android:layout_gravity="center_vertical"
                                android:orientation="horizontal">

                                <View
                                    android:layout_width="@dimen/px8"
                                    android:layout_height="@dimen/px32"
                                    android:layout_gravity="center_vertical"
                                    android:background="@color/color_283" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_vertical"
                                    android:paddingLeft="@dimen/margin_10"
                                    android:text="@string/str_customization_by_high"
                                    android:textColor="@color/color_283"
                                    android:textSize="@dimen/font_text_30px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <Button
                                android:id="@+id/btn_high_more"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_alignParentRight="true"
                                android:background="@null"
                                android:drawablePadding="10px"
                                android:drawableRight="@mipmap/home_icon_more"
                                android:text="@string/str_see_more"
                                android:textColor="@color/color_99"
                                android:textSize="@dimen/font_text_30px" />
                        </com.zhy.autolayout.AutoRelativeLayout>

                        <ImageView
                            android:id="@+id/iv_high_head"
                            android:layout_width="match_parent"
                            android:layout_height="@dimen/px300"
                            android:scaleType="fitXY" />

                        <com.zhy.autolayout.AutoLinearLayout
                            android:layout_width="match_parent"
                            android:layout_height="@dimen/px200"
                            android:layout_marginLeft="@dimen/px10"
                            android:layout_marginRight="@dimen/px10"
                            android:layout_marginTop="@dimen/px10">

                            <ImageView
                                android:id="@+id/iv_high_left"
                                android:layout_width="0px"
                                android:layout_height="@dimen/px200"
                                android:layout_marginRight="@dimen/px10"
                                android:layout_weight="1"
                                android:scaleType="fitXY" />

                            <ImageView
                                android:id="@+id/iv_high_right"
                                android:layout_width="0px"
                                android:layout_height="@dimen/px200"
                                android:layout_weight="1"
                                android:scaleType="fitXY" />
                        </com.zhy.autolayout.AutoLinearLayout>


                        <View
                            android:layout_width="match_parent"
                            android:layout_height="20px"
                            android:layout_marginTop="@dimen/px40"
                            android:background="@color/color_divider" />

                        <com.zhy.autolayout.AutoRelativeLayout
                            android:layout_width="wrap_content"
                            android:layout_height="100px"
                            android:layout_gravity="center_vertical"
                            android:orientation="horizontal"
                            android:paddingLeft="@dimen/margin_20">

                            <com.zhy.autolayout.AutoLinearLayout
                                android:layout_width="wrap_content"
                                android:layout_height="match_parent"
                                android:layout_gravity="center_vertical"
                                android:orientation="horizontal">

                                <View
                                    android:layout_width="@dimen/px8"
                                    android:layout_height="@dimen/px32"
                                    android:layout_gravity="center_vertical"
                                    android:background="@color/color_283" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_vertical"
                                    android:paddingLeft="@dimen/margin_10"
                                    android:text="定制新品"
                                    android:textColor="@color/color_283"
                                    android:textSize="@dimen/font_text_30px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <Button
                                android:id="@+id/btn_new_more"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_alignParentRight="true"
                                android:background="@null"
                                android:drawablePadding="10px"
                                android:drawableRight="@mipmap/home_icon_more"
                                android:text="@string/str_see_more"
                                android:textColor="@color/color_99"
                                android:textSize="@dimen/font_text_30px" />
                        </com.zhy.autolayout.AutoRelativeLayout>

                        <com.ydt.common.widget.autolayout.AutoNestedScrollView
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content">

                            <android.support.v7.widget.RecyclerView
                                android:id="@+id/rv_customization"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:paddingLeft="@dimen/margin_20"
                                android:paddingRight="@dimen/margin_20" />
                        </com.ydt.common.widget.autolayout.AutoNestedScrollView>

                        <View
                            android:layout_width="match_parent"
                            android:layout_height="20px"
                            android:background="@color/color_divider" />

                        <com.zhy.autolayout.AutoRelativeLayout
                            android:layout_width="wrap_content"
                            android:layout_height="100px"
                            android:layout_gravity="center_vertical"
                            android:orientation="horizontal"
                            android:paddingLeft="@dimen/px20"
                            android:paddingRight="@dimen/px20">

                            <com.zhy.autolayout.AutoLinearLayout
                                android:layout_width="wrap_content"
                                android:layout_height="match_parent">

                                <View
                                    android:layout_width="@dimen/px8"
                                    android:layout_height="@dimen/px32"
                                    android:layout_gravity="center_vertical"
                                    android:background="@color/color_283" />

                                <TextView
                                    android:layout_width="wrap_content"
                                    android:layout_height="wrap_content"
                                    android:layout_gravity="center_vertical"
                                    android:paddingLeft="@dimen/margin_10"
                                    android:text="发现精彩"
                                    android:textColor="@color/color_283"
                                    android:textSize="@dimen/font_text_30px" />
                            </com.zhy.autolayout.AutoLinearLayout>

                            <Button
                                android:id="@+id/btn_jx_more"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:layout_alignParentRight="true"
                                android:background="@null"
                                android:drawablePadding="10px"
                                android:drawableRight="@mipmap/home_icon_more"
                                android:text="@string/str_see_more"
                                android:textColor="@color/color_99"
                                android:textSize="@dimen/font_text_30px" />


                        </com.zhy.autolayout.AutoRelativeLayout>

                        <com.ydt.common.widget.autolayout.AutoNestedScrollView
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content">

                            <android.support.v7.widget.RecyclerView
                                android:id="@+id/rv_moyun"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:paddingLeft="@dimen/margin_20" />
                        </com.ydt.common.widget.autolayout.AutoNestedScrollView>

                        <View
                            android:layout_width="match_parent"
                            android:layout_height="20px"
                            android:background="@color/color_divider" />
                    </com.zhy.autolayout.AutoLinearLayout>

                    <com.ydt.common.widget.autolayout.AutoTabLayout
                        android:id="@+id/tabloyout"
                        android:layout_width="match_parent"
                        android:layout_height="@dimen/px100"
                        android:layout_below="@id/toolbar"
                        android:layout_gravity="bottom"
                        android:background="@color/color_white"
                        android:fillViewport="false"
                        android:focusable="false"
                        android:scrollbars="none"
                        app:tabGravity="fill"
                        app:tabIndicatorColor="@color/color_login"
                        app:tabIndicatorHeight="@dimen/px4"
                        app:tabPaddingEnd="@dimen/px20"
                        app:tabPaddingStart="@dimen/px20"
                        app:tabSelectedTextColor="@color/color_login"
                        app:tabTextAppearance="@style/StoreTabLayoutTextAppearance"
                        app:tabTextColor="@color/color_55" />

                    <include layout="@layout/divider" />
                </android.support.design.widget.AppBarLayout>

                <android.support.v4.widget.NestedScrollView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:layout_behavior="@string/appbar_scrolling_view_behavior">

                    <android.support.v7.widget.RecyclerView
                        android:id="@+id/rv_recommend"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:paddingLeft="@dimen/margin_20"
                        android:paddingRight="@dimen/margin_20"
                        android:paddingTop="@dimen/margin_20" />
                </android.support.v4.widget.NestedScrollView>
            </android.support.design.widget.CoordinatorLayout>

            <ImageView
                android:id="@+id/iv_top"
                android:layout_width="@dimen/public_spacing_80"
                android:layout_height="@dimen/public_spacing_80"
                android:layout_alignParentBottom="true"
                android:layout_alignParentRight="true"
                android:layout_marginBottom="@dimen/search_height_60px"
                android:layout_marginRight="@dimen/public_spacing_20"
                android:clickable="true"
                android:src="@mipmap/home_btn_top" />
        </com.zhy.autolayout.AutoRelativeLayout>
    </com.scwang.smartrefresh.layout.SmartRefreshLayout>

解决方法：

    iv_top.setOnClickListener {
            var behavior = (app_bar_layout.layoutParams as CoordinatorLayout.LayoutParams).behavior
            if (behavior is AppBarLayout.Behavior) {
                var appBarLayoutBehavior = behavior
                var topAndBottomOffset = appBarLayoutBehavior.topAndBottomOffset;
                if (topAndBottomOffset != 0) {
                    appBarLayoutBehavior.topAndBottomOffset = 0
                }
            }
        }

关键代码：

  appBarLayoutBehavior.topAndBottomOffset = 0

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