滚动不适用于CoordinatorLayout +视差图像+ BottomSheetLayout [英] Scrolling is not working with CoordinatorLayout + parallax image + BottomSheetLayout

问题描述

我有一个活动，该活动使用视差标题图像实现通用模式，并使用CoordinatorLayout，AppBarLayout和CollapsingToolbarLayout滚动内容.我的xml布局看起来像这样:

I have an activity, which implements a common pattern with parallax header image and scrolling content using CoordinatorLayout, AppBarLayout and CollapsingToolbarLayout. My xml layout looks like this:

<android.support.design.widget.CoordinatorLayout
    android:fitsSystemWindows="true"
    android:layout_height="match_parent"
    android:layout_width="match_parent">

    <android.support.design.widget.AppBarLayout
        android:fitsSystemWindows="true"
        android:id="@+id/appbar"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.design.widget.CollapsingToolbarLayout
            android:fitsSystemWindows="true"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            app:contentScrim="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <TextView
                android:background="@color/colorAccent"
                android:gravity="center"
                android:layout_height="250dp"
                android:layout_width="match_parent"
                android:text="ParallaxImage"
                app:layout_collapseMode="parallax"/>

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_height="?attr/actionBarSize"
                android:layout_width="match_parent"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/AppTheme.PopupOverlay"/>

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

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

        <TextView
            android:layout_height="wrap_content"
            android:layout_margin="@dimen/text_margin"
            android:layout_width="wrap_content"
            android:text="@string/large_text"/>
    </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

正如您在下面的gif动画中看到的那样，一切正常.您可以从内容NestedScrollView以及Toolbar或视差View滚动整个屏幕.

As you can see in the gif animation below, everything works correctly. You can scroll the whole screen from the content NestedScrollView as well as from the Toolbar or the parallax View.

Google引入了BottomSheetBehavior类(Android设计支持库底页.我的带有底部工作表的xml布局如下所示:

Google introduced a BottomSheetBehavior class (Android design support library 23.2) to help developers to implement Bottom sheets. My xml layout with Bottom sheet looks like this:

<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:fitsSystemWindows="true">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        android:theme="@style/AppTheme.AppBarOverlay">
        <!-- ommited -->
    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">
        <!-- ommited -->
    </android.support.v4.widget.NestedScrollView>

    <LinearLayout
        android:id="@+id/bottomSheet"
        android:layout_width="match_parent"
        android:layout_height="400dp"
        android:background="@android:color/holo_blue_bright"
        android:orientation="vertical"
        app:behavior_peekHeight="?attr/actionBarSize"
        app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:gravity="center_vertical"
            android:paddingLeft="16dp"
            android:paddingRight="16dp"
            android:text="BottomSheetLayout"
            android:textColor="@android:color/white"/>

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

            <TextView
                android:layout_width="match_parent"
                android:layout_height="400dp"
                android:background="@android:color/holo_green_dark"
                android:padding="16dp"
                android:text="@string/large_text"
                android:textColor="@android:color/white"/>

        </android.support.v4.widget.NestedScrollView>
    </LinearLayout>

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

结果如下:

如您所见，如果我开始从视差View滚动，则现在无法滚动.从内容NestedScrollView和Toolbar滚动可以正常工作.

As you can see, Now I am not able to scroll, if I start to scroll from the parallax View. Scrolling from content NestedScrollView and from the Toolbar works as expected.

如何同时管理视差View中的滚动工作(与第一个gif动画中的方法相同)?似乎BottomSheetBehavior会拦截触摸事件并阻止AppBarLayout (AppBarLayoutBehavior)处理滚动.但是奇怪的是，从Toolbar滚动是可行的，并且视差View和Toolbar都是AppBarLayout的子级.

How can I manage the scrolling to work from parallax View as well (the same way as in the first gif animation)? It seems that the BottomSheetBehavior intercepts touch events and prevents the AppBarLayout (AppBarLayoutBehavior) to handle the scroll. But the weird thing is that scrolling from Toolbar works and both parallax View and Toolbar are children of the AppBarLayout.

推荐答案

我正在复制粘贴正在使用的XML.顺便说一下，它可以在三星Galaxy S3，华为Mate 8和Moto上运行，而我还没有尝试使用模拟器(我删除了所有业务内容，只放置了虚拟小部件).

I'm copying paste the XML that I'm using. It's working on Samsung Galaxy S3, Huawei Mate 8 and Moto by the way and I have not tried on emulator (I removed all business stuff and just put dummy widgets).

<?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/coordinatorlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbarlayout"
    android:layout_width="match_parent"
    android:layout_height="256dp"
    android:theme="@style/AppTheme.AppBarOverlay"
    android:fitsSystemWindows="true">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_scrollFlags="scroll|exitUntilCollapsed"
        android:fitsSystemWindows="true"
        app:contentScrim="?attr/colorPrimary"
        app:expandedTitleMarginStart="48dp"
        app:expandedTitleMarginEnd="64dp">

        <ImageView
            android:id="@+id/backdrop"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:fitsSystemWindows="true"
            app:layout_collapseMode="parallax"/>


        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            app:popupTheme="@style/AppTheme.PopupOverlay"
            app:layout_collapseMode="pin"/>

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



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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="16dp">

        <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp">

            <LinearLayout
                style="@style/Widget.CardContent"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu. In enim justo, rhoncus ut, imperdiet a, venenatis vitae, justo." />

            </LinearLayout>

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

        <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="16dp"
            android:layout_marginLeft="16dp"
            android:layout_marginRight="16dp">

            <LinearLayout
                style="@style/Widget.CardContent"
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <TextView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="TITLE"
                android:textAppearance="@style/TextAppearance.AppCompat.Title" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="text 1" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="text 2" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="text 3" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="text 4" />

                    <TextView
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:text="text 5" />

                </LinearLayout>

            </android.support.v7.widget.CardView>
        </LinearLayout>
    </android.support.v4.widget.NestedScrollView>


<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    app:behavior_peekHeight="100dp"
    android:fitsSystemWindows="true"
    app:layout_behavior="android.support.design.widget.BottomSheetBehavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="16dp"
        android:background="@android:color/white"
        android:padding="15dp">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="BOOTOMSHEET TITLE"
            android:textAppearance="@style/TextAppearance.AppCompat.Title" />

        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Button1"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="text 2"
            android:layout_margin="10dp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="text 3"
            android:layout_margin="10dp"/>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="text 4"
            android:layout_margin="10dp"/>


        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="320dp"
            android:background="@color/colorAccent">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center"
                android:text="Your remaining content here"
                android:textColor="@android:color/white" />

        </FrameLayout>
    </LinearLayout>
</android.support.v4.widget.NestedScrollView>

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