我创建由协调器布局AppBarLayout折叠工具栏布局图片工具栏
并包括一种内容布局。
为什么向上滚动时内容布局在工具栏上？
这是图片首次打开活动This is pic first open Activitywhen scroll downand scroll up main.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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Activity_Movie">
<com.google.android.material.appbar.AppBarLayout
android:id="@+id/appbar"
android:layout_width="match_parent"
android:layout_height="@dimen/detail_backdrop_height"
android:fitsSystemWindows="true"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
<com.google.android.material.appbar.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="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="@+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:srcCompat="@drawable/a_poster_joker" />
<androidx.appcompat.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
app:layout_collapseMode="pin"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<include layout="@layout/content_activity__movie" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
content_activity__movie.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.core.widget.NestedScrollView 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/Movie_Nested"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="false"
android:fillViewport="true"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context=".Activity_Movie"
tools:showIn="@layout/p__movie">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clickable="false"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dip"
android:orientation="vertical">
<TextView
android:id="@+id/Movie_Title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Title"
android:textColor="@color/colorPrimary"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dip"
android:orientation="horizontal">
<LinearLayout
android:layout_width="160dip"
android:layout_height="200dip"
android:orientation="horizontal"
android:padding="5dip">
<ImageView
android:id="@+id/Movie_Img"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:srcCompat="@tools:sample/avatars[3]" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200dip"
android:orientation="vertical"
android:padding="10dip">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Score"
android:textColor="@color/colorBlack"
android:textStyle="bold" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical">
<com.mancj.slimchart.SlimChart
android:id="@+id/slimChart"
android:layout_width="80dip"
android:layout_height="80dip"
app:roundedEdges="true"
app:strokeWidth="8dp"
app:text="0"
app:textColor="@color/colorAccent" />
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Genre"
android:textColor="@color/colorBlack"
android:textStyle="bold" />
<TextView
android:id="@+id/Movie_Genre"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="ACTION"
android:textColor="@color/colorBlack" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Release Date"
android:textColor="@color/colorBlack"
android:textStyle="bold" />
<TextView
android:id="@+id/Movie_Release"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="2019-11-02"
android:textColor="@color/colorBlack" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dip"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Sinopsis"
android:textColor="@color/colorBlack"
android:textStyle="bold" />
<TextView
android:id="@+id/Movie_Sinopsis"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=". . . . . "
android:textColor="@color/colorBlack" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="10dip"
android:layout_marginBottom="10dip"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/colorPrimary"
android:orientation="horizontal"
android:padding="5dip">
<TextView
android:id="@+id/Movie_Label_Other"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Movie Action Lainnya"
android:textColor="@color/colorWhite"
android:textStyle="bold" />
</LinearLayout>
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:animationCache="true"
android:elevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="5dip"
android:orientation="horizontal">
<GridView
android:id="@+id/Movie_Grid"
android:layout_width="1050dip"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:layout_marginTop="10dip"
android:layout_marginRight="10dip"
android:layout_marginBottom="10dip"
android:columnWidth="100dip"
android:elevation="5dip"
android:gravity="center"
android:horizontalSpacing="5dip"
android:numColumns="10"
android:scrollbars="horizontal"
android:stretchMode="none"
android:verticalSpacing="5dip" />
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
</LinearLayout>
</LinearLayout>
</androidx.core.widget.NestedScrollView>
将此标签用于工具栏：
app:layout_scrollFlags="scroll|enterAlways|snap"
希望它会帮助您。