我正在尝试使用CollapsingToolbarLayout 创建布局。但有一件事我不明白，我想要移除工具栏和选项卡布局之间的阴影。我已经尝试了几种方法，但没有成功移除阴影。请问有人可以帮助我吗？谢谢。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="@android:color/white"
android:fitsSystemWindows="true">
<android.support.design.widget.CoordinatorLayout
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/adview"
android:fitsSystemWindows="true">
<android.support.v4.view.ViewPager
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="50dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior" />
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="bottom"
android:background="?attr/colorPrimary"
android:translationZ="2dp"
app:layout_anchor="@+id/appbar"
app:layout_anchorGravity="bottom"
app:tabGravity="fill"
app:tabIndicatorColor="@android:color/white"
app:tabIndicatorHeight="3dp"
app:tabMode="fixed"
app:tabTextColor="@color/tabs_text_selector" />
<android.support.design.widget.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="200dp"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<net.opacapp.multilinecollapsingtoolbar.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="20dp"
app:expandedTitleMarginStart="20dp"
app:expandedTitleTextAppearance="@style/detalle_txt_expanded"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="@+id/detalle_img"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="@drawable/img_thumb_m"
android:transitionName="@string/transition"
app:layout_collapseMode="parallax"
tools:targetApi="lollipop" />
<ImageView
android:id="@+id/detalle_img_tipo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="15dp"
android:layout_gravity="center_horizontal"
android:src="@drawable/img_edificio"/>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:minHeight="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="@style/AppTheme"/>
</net.opacapp.multilinecollapsingtoolbar.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="@+id/detalle_info_fab_check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="16dp"
android:clickable="false"
android:src="@drawable/ic_check1"
app:fabSize="mini"
app:backgroundTint="@android:color/white"
app:layout_anchor="@+id/appbar"
app:layout_anchorGravity="bottom|right|end" />
</android.support.design.widget.CoordinatorLayout>
<include
android:id="@+id/adview"
layout="@layout/adview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" />