隐藏片段上带有recyclerview的滚动条上的隐藏工具栏 [英] Hiding Toolbar on scroll with recyclerview inside fragment

问题描述

当片段中的recyclerview滚动时，我试图使工具栏在滚动时折叠.首先，这是我的主要布局:

I'm trying to get the toolbar to collapse on scroll when a recyclerview inside a fragment is scrolled. To start, heres my main layout:

<DrawerLayout>

     <RelativeLayout
        android:id="@+id/mainRelativeLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        >

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

            <android.support.design.widget.AppBarLayout
                android:id="@+id/appBarLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                >

                <Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:elevation="5dp"
                    app:layout_scrollFlags="scroll|enterAlways"
                    >

                </Toolbar>

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

            <FrameLayout
                android:id="@+id/container"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                />

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

    </RelativeLayout>

<!-- ignore -->
<drawercontents>
</DrawerLayout>

因此，您可能会猜到我的片段正在加载到@id/container中.我的第一个片段包含recyclerview，我在该recyclerview上设置了app:layout_behavior="@string/appbar_scrolling_view_behavior".这确实起作用，并且工具栏在滚动时折叠.问题是工具栏覆盖了片段未折叠时的顶部内容.在片段容器中添加等于工具栏大小的顶部空白，只会导致工具栏折叠时(显然)留下空白.

So as you can probably guess my fragments are being loaded into @id/container. My first fragment contains the recyclerview, and I set app:layout_behavior="@string/appbar_scrolling_view_behavior" on that recyclerview. This does work, and the toolbar collapses on scroll. The issue is the toolbar covers the top contents of the fragment when its not collapsed. Adding a top margin to the fragment container equal to the size of the toolbar just causes a blank space to be left when the toolbar collapses (obviously).

这里缺少什么?有什么想法吗?

Whats missing here? Any ideas?

根据要求，以下是包含recyclerview的片段的布局:

As requested, here is the layout for the fragment containing the recyclerview:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
    android:id="@+id/feed"
    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:background="#00000000"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

推荐答案

<?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:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/tabanim_appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar
            android:id="@+id/tabanim_toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways|snap"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

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

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

这篇关于隐藏片段上带有recyclerview的滚动条上的隐藏工具栏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！