CollapsingToolbarLayout 折叠不起作用

Question

这是我的activity_article_list.xml

<android.support.design.widget.CoordinatorLayout        
    ...
    android:fitsSystemWindows="true"
    android:theme="@style/MyTheme">

    <android.support.design.widget.AppBarLayout
        ...
        android:fitsSystemWindows="true"
        android:theme="@style/MyAppBarTheme">

        <android.support.design.widget.CollapsingToolbarLayout
            ...
            android:fitsSystemWindows="true"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <include layout="@layout/activity_toolbar" />

        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>


    <LinearLayout
        ...
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <com.malinskiy.superrecyclerview.SuperRecyclerView
            .../>
    </LinearLayout>

</android.support.design.widget.CoordinatorLayout>

这是activity_toolbar.xml

<android.support.v7.widget.Toolbar 
    ...
    android:id="@+id/list_toolbar"
    android:elevation="4dp"
    app:layout_collapseMode="pin"
    app:layout_scrollFlags="scroll|enterAlways"
    app:popupTheme="@style/MyTheme">

    <RelativeLayout>

        <ImageButton
            ... />

        <ImageButton
            .../>

        <TextView
            ... />
    </RelativeLayout>

</android.support.v7.widget.Toolbar>

风格上，MyTheme 是Theme.AppCompat.Light.NoActionBar，

MyAppBarTheme 是ThemeOverlay.AppCompat.ActionBar。

我看到很多关于折叠工具栏的问题。

我认为我的 xml 类似于问题或讲座的内容。

我认为重点是layout_scrollFlags、layout_collapseMode、layout_scrollFlags。

然而，工具栏并没有随着滚动而消失。

它仍然存在。

MyAppBarTheme 是否有错误的父级？

还是有错误的代码？

编辑：我在activity_article_list.xml中的完整代码

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout     
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/root_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    android:theme="@style/MyTheme">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/MyAppBarTheme">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsingToolbarLayout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways">

            <android.support.v7.widget.Toolbar
                android:id="@+id/list_toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:minHeight="0dp"
                android:background="@color/colorPrimary"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/MyTheme">

                <TextView
                    android:id="@+id/boardName"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:gravity="center_vertical"
                    android:textColor="@color/textColorPrimary"
                    android:textSize="20dp" />

            </android.support.v7.widget.Toolbar>

        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

    <com.malinskiy.superrecyclerview.SuperRecyclerView
        android:id="@+id/article_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/windowBackground"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

    </android.support.design.widget.CoordinatorLayout>

Answer 1

这是对我的代码的参考，其中实现了折叠工具栏 ...试试这个。

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:background="@color/white"
    android:layout_height="match_parent">

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

        <include layout="@layout/layout_toolbar"/>
        <android.support.design.widget.CoordinatorLayout
            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.support.design.widget.AppBarLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="#0000"
                >

                <android.support.design.widget.CollapsingToolbarLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:contentScrim="#0000"
                    app:layout_scrollFlags="enterAlways|scroll">

                    <include layout="@layout/home_menu_items"/>

                    <ImageView
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:scaleType="fitXY"
                        android:adjustViewBounds="true"
                        app:layout_collapseMode="parallax" />

                    <android.support.v7.widget.Toolbar
                        android:layout_width="match_parent"
                        android:layout_height="0dp"
                        app:layout_collapseMode="pin" />

                </android.support.design.widget.CollapsingToolbarLayout>
                <LinearLayout
                    android:id="@+id/hot_deals_layout"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:gravity="center_vertical"
                    android:layout_marginRight="5dp"
                    android:padding="2dp"
                    android:layout_marginLeft="5dp"
                    android:orientation="horizontal"
                    android:layout_alignParentBottom="true">


                    <android.support.v7.widget.AppCompatTextView
                        android:layout_weight=".3"
                        android:id="@+id/pdt_info_tv"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:maxLines="1"
                        android:text="Hot Deals"
                        android:textSize="18dp"
                        android:gravity="start|center"
                        android:textStyle="bold"
                        android:textColor="@color/black_dark"
                        />

                    <TextView
                        android:id="@+id/show_More"
                        android:layout_weight=".7"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"
                        android:text="Show More"
                        android:gravity="right|center"
                        android:maxLines="1"
                        android:textSize="14dp"
                        android:textColor="@color/black_moderate"
                        />
                </LinearLayout>
            </android.support.design.widget.AppBarLayout>

                <android.support.v7.widget.RecyclerView
                    android:id="@+id/recyclerview"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    app:layout_behavior="@string/appbar_scrolling_view_behavior"
                    android:scrollbars="none" />

        </android.support.design.widget.CoordinatorLayout>

    </LinearLayout>

</android.support.design.widget.CoordinatorLayout>