嵌套RecyclerView中的滚动行为与水平滚动 [英] Scroll behavior in nested RecyclerView with horizontal scroll

问题描述

我必须在每个项目中创建带有嵌套水平RecyclerView的垂直RecyclerView.一切都在CoordinatorLayout之内.当我通过点击外部滚动滚动时，嵌套的RecyclerView工具栏会隐藏，但是当我通过点击嵌套滚动滚动父回收器时，一个工具栏会保留.

I have to create vertical RecyclerView with nested horizontal RecyclerView in every item. Everything is within CoordinatorLayout. When I scroll by tapping outside nested RecyclerView toolbar hides, but when I scroll parent Recycler by tapping on nested one toolbar stays.

任何帮助将不胜感激.

这是我的xml布局:

main_activity.xml:

main_activity.xml:

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

<FrameLayout
    android:id="@+id/fragment_frame"
    ...
    android:fitsSystemWindows="true"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

<android.support.design.widget.AppBarLayout
    ...
    android:fitsSystemWindows="true"
    android:id="@+id/appbar_layout">

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

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

这是toolbar.xml:

Here is toolbar.xml :

<android.support.v7.widget.Toolbar
    android:id="@+id/main_toolbar"
    ...
    android:fitsSystemWindows="true"
    app:layout_scrollFlags="scroll|enterAlways">

    <TextView .../>

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

fragment.xml:

fragment.xml:

<android.support.v7.widget.RecyclerView
    ...
    android:scrollbars="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

还有recycler_view_item.xml:

And recycler_view_item.xml:

<RelativeLayout ...>

    <TextView .../>

    <!-- fixme(CullyCross) fix bug with hiding toolbar -->
    <android.support.v7.widget.RecyclerView
        ...
        android:scrollbars="horizontal"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"
        />

</RelativeLayout>

谢谢，
安东

推荐答案

根据要求，这是到目前为止我发现足够好的解决方案:

As requested here is the solution I found good enough so far:

在我的情况下，我有一个nestedScrollView，其中4个RecyclerView设置为在内部水平滚动.对于每个RecyclerView，我都以编程方式完成了此操作:

In my case I have a nestedScrollView with 4 RecyclerViews set to scroll horizontally inside. For each of those RecyclerViews I have done this programatically:

restaurantsRecylerView.setHasFixedSize(true); 
restaurantsRecylerView.setNestedScrollingEnabled(false);

您可能不希望fixedSize，不确定它是否会有所不同，我的列表始终为25，因此我可以使用它来提高性能.完成此操作后，即使我触摸了recyclerViews，我也可以毫无问题地滚动

You probably don't want the fixedSize, not sure if it will make any difference, my list is always 25 so I can use that for performance. After having done this I can scroll without issues even when I touch on the recyclerViews

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